e Wan Finals

8/3/2019 e Wan Finals

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Wednesday, March 30, 2011

Final Exam - Accessing the WAN

Take Assessment - EWAN Final Exam - CCNA Exploration: Accessing the WAN (Version 4.0)

1 Which three guidelines would help contribute to creating a strong password policy?(Choose three.)

Once a good password is created, do not change it.

***Deliberately misspell words when creating passwords.

***Create passwords that are at least 8 characters in length.

***Use combinations of upper case, lower case, and special characters.

Write passwords in locations that can be easily retrieved to avoid being locked out.

Use long words found in the dictionary to make passwords that are easy to remember.

2 Refer to the exhibit. Based on the output as shown, which two statements correctly definehow the router will treat Telnet traffic that comes into interface FastEthernet 0/1? (Choosetwo).

Telnet to 172.16.10.0/24 is denied.

***Telnet to 172.16.20.0/24 is denied.

Telnet to 172.16.0.0/24 is permitted.

***Telnet to 172.16.10.0/24 is permitted.


3 A technician has been asked to run the Cisco SDM one-step lockdown on a customerrouter. What will be the result of this process?

Traffic is only accepted from and forwarded to SDM-trusted Cisco routers.

Security testing is performed and the results are saved as a text file stored in NVRAM.

All traffic that enters the router is quarantined and checked for viruses before beingforwarded.

***The router is tested for any potential security problems and all recommended security-related configuration changes will be automatically applied.
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4 What are two main components of data confidentiality? (Choose two.)

checksum

digital certificates

***encapsulation

***encryption

hashing

5 Refer to the exhibit. A network administrator is tasked with completing the Frame Relaytopology that interconnects two remote sites. How should the point-to-point subinterfaces beconfigured on HQ to complete the topology?

frame-relay interface-dlci 103 on Serial 0/0/0.1frame-relay interface-dlci 203 on Serial 0/0/0.2

***frame-relay interface-dlci 301 on Serial 0/0/0.1frame-relay interface-dlci 302 on Serial 0/0/0.2

frame-relay map ip 192.168.1.1 103 broadcast on Serial 0/0/0.1frame-relay map ip 192.168.2.2 203 broadcast on Serial 0/0/0.2

frame-relay map ip 192.168.1.1 301 broadcast on Serial 0/0/0.1frame-relay map ip 192.168.2.2 302 broadcast on Serial 0/0/0.2

6 An administrator is configuring a dual stack router with IPv6 and IPv4 using RIPng. Theadministrator receives an error message when trying to enter the IPv4 routes into RIPng.What is the cause of the problem?

When IPv4 and IPv6 are configured on the same interface, all IPv4 addresses are over-written in favor of the newer technology.

Incorrect IPv4 addresses are entered on the router interfaces.

RIPng is incompatible with dual-stack technology.

***IPv4 is incompatible with RIPng.

7 Refer to the exhibit. All devices are configured as shown in the exhibit. PC1 is unable toping the default gateway. What is the cause of the problem?


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The default gateway is in the wrong subnet.

STP has blocked the port that PC1 is connected to.

***Port Fa0/2 on S2 is assigned to the wrong VLAN.

S2 has the wrong IP address assigned to the VLAN30 interface.

8 Which statement is true about NCP?

Link termination is the responsibility of NCP.

***Each network protocol has a corresponding NCP.

NCP establishes the initial link between PPP devices.

NCP tests the link to ensure that the link quality is sufficient.

9 Refer to the exhibit. This serial interface is not functioning correctly. Based on the outputshown, what is the most likely cause?

improper LMI type

interface reset

***PPP negotiation failure

unplugged cable

10 What is the result when the command permit tcp 10.25.132.0 0.0.0.255 any eq smtp isadded to a named access control list and applied on the inbound interface of a router?

TCP traffic with a destination to the 10.25.132.0/24 is permitted.

Only Telnet traffic is permitted to the 10.24.132.0/24 network

Ttraffic from 10.25.132.0/24 is permitted to anywhere on using any port.

***Traffic using port 25 from the 10.25.132.0/24 is permitted to all destinations.

11 Refer to the exhibit. From the output of the show interfaces and ping commands, atwhich layer of the OSI model is a fault indicated?

application


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transport

***network

data link

physical

12 Which Layer 2 access method separates traffic into time slots and is specified by DOCSISfor use with cable high speed Internet service?

***TDMA

FDMA

CDMA

S-CDMA

13 Which additional functionality is available on an interface when the encapsulation ischanged from HDLC to PPP?

flow control

error control

***authentication

synchronous communication

14 During the initial configuration of a router, the administrator enters the command noservice config. How will the router behave as a a result of this command?

All services will be disabled.

***The default configuration will be restored on reboot.

Automatic configuration from the network will be prevented.

Services that are configured on the router will not be allowed to originate traffic.

15 Which statement accurately describes a role that is played in establishing a WANconnection?

ISDN and ATM are circuit-switched technologies that are used to establish on demand a paththrough the service provider network.

***Data link layer protocols like PPP and HDLC define how data is encapsulated for


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transmission across a WAN link.

A packet-switching network establishes a dedicated circuit between nodes for the durationof the communication session.

Frame Relay switches are normally considered to be customer premises equipment (CPE)

and are maintained by local administrators.

16 The Cisco IOS on a particular Cisco router has been corrupted. When the router boots intothe ROMMON mode, what is one resource that the network technician needs to use in orderto restore the Cisco IOS?

an authenticated username

a TFTP server

a serial connection to the Internet

the secret password of the router

***access to a backup IOS software image that is stored in DRAM on the router

17 Refer to the exhibit. What happens if the network administrator issues the commandsshown when an ACL called Managers already exists on the router?

The commands overwrite the existing Managers ACL.

***The commands are added at the end of the existing Managers ACL.

The network administrator receives an error stating that the ACL already exists.

The commands will create a duplicate Managers ACL containing only the new commandsbeing entered.

18 What can a network administrator do to recover from a lost router password?

use the copy tftp: flash: command

boot the router to bootROM mode and enter the b command to load the IOS manually

telnet from another router and issue the show running-config command to view the

password

***boot the router to ROM monitor mode and configure the router to ignore the startupconfiguration when it initializes

19 Which statement is true of DSL?


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It is typically deployed in a mesh topology.

The network is shared using a logical bus topology.

***Bandwidth is dependent on the number of concurrent users.

Transfer rates are dependent on the length of the local loop.

20 Refer to the exhibit. EIGRP has been configured as a routing protocol on the network.Users on the 192.168.1.0/24 network should have full access to the web server that isconnected to 192.168.3.0/24 but should not be allowed to telnet to router R3. Verifying theconfiguration, the network administrator realizes that users on network 192.168.1.0/24 cansuccessfully telnet to the router. What should be done to remedy the problem?

***The ACL 101 statements 10 and 20 should be reversed.

The ACL 101 should be applied on R3 VTY lines 0 4 in the inbound direction.

The ACL 101 should be applied on R3 VTY lines 0 4 in the outbound direction.

The ACL 101 should be applied on R3 Serial0/0/1 interface in the outbound direction.

The ACL 101 statement 10 should be changed to: permit ip 192.168.1.0 0.0.0.255 any

21 What will be the result of the enable secret command when added at the globalconfiguration mode on the router?

***It will use MD5 encryption to protect the privileged EXEC level access.

It will use type 7 encryption and will encrypt only the privileged EXEC level passwords.

It will use type 7 encryption to prevent all passwords that are displayed on the screen frombeing readable.

It will use MD5 encryption to protect the passwords that are only used in the PAP and CHAPauthentication process.

22 Refer to the exhibit. EIGRP has been configured as a routing protocol on the network.Users on the 192.168.1.0/24 network should be able to establish a TFTP connection to thefile server on the 192.168.3.0/24 network for file backup. The users complain that they donot have the required access. What is the possible cause of the problem?

TFTP uses UDP as a transport protocol. UDP is not allowed by the ACL 120.


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TFTP uses SMTP as a transport protocol. SMTP is blocked by statement 10 in the ACL 120.

TFTP uses TCP as a transport protocol. TCP is blocked by statement 20 in the ACL 120.

***TFTP uses ICMP as a transport protocol. ICMP is blocked by statement 30 in the ACL 120.

23 Which two protocols in combination should be used to establish a link with secureauthentication between a Cisco and a non-Cisco router? (Choose two.)

HDLC

***PPP

***SLIP

PAP

CHAP

24 Which statement is true about wildcard masks?

***A wildcard mask must be created by inverting the subnet mask.

A wildcard mask performs the same function as a subnet mask.

A wildcard mask of 0.0.0.0 means the address should match exactly.

A wildcard mask uses a "1" to identify IP address bits that must be checked.

25 Refer to the exhibit. Partial results of the show ip access-list and show ip interface Fa0/1commands for router R3 are shown. There are no other ACLs in effect. Host A is unable totelnet to host B. Which two actions will correct the problem but still restrict other trafficbetween the two networks? (Choose two.)

Apply the ACL in the inbound direction on Fa0/0 interface.

***Apply the ACL in the outbound direction on Fa0/0 interface.

Change the protocol in the access list entries to UDP.

***Reverse the order of the TCP protocol statements in the ACL.

Modify the second entry in the list to permit tcp host 192.168.10.10 any eq telnet .

26 Refer to the exhibit. Which statement correctly describes how Router1 processes an FTPrequest packet that enters interface S0/0/0, and is destined for an FTP server at IP address172.16.1.5?


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The router matches the incoming packet to the statement that is created by access-list 201permit ip any any command and allows the packet into the router.

The router reaches the end of ACL 101 without matching a condition and drops the packetbecause there is no statement that was created by access-list 101 permit ip any anycommand.

***The router matches the incoming packet to the statement that was created by theaccess-list 101 permit ip any 172.16.1.0 0.0.0.255 command, ignores the remainingstatements in ACL 101, and allows the packet into the router.

The router matches the incoming packet to the statement that was created by the access-list 201 deny icmp 172.16.1.0 0.0.0.255 any command, continues comparing the packet tothe remaining statements in ACL 201 to ensure that no subsequent statements allow FTP,and then the router drops the packet.

27 Which characteristic of VPN technology prevents the contents of data communicationsfrom being read by unauthorized parties?

QoS

latency

reliability

***confidentiality

28 Refer to the exhibit. Router1 is not able to communicate with its peer that is connectedto this interface. Based on the output as shown, what is the most likely cause?

interface reset

***unplugged cable

improper LMI type

PPP negotiation failure

29 Refer to the exhibit. A network administrator is creating a prototype to verify the newWAN design. However, the communication between the two routers cannot be established.Based on the output of the commands, what can be done to solve the problem?

Replace the serial cable .

Replace the WIC on RA.


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***Configure RA with a clock rate command.

Issue a no shutdown interface command on RB.

30 What function does LCP perform in the establishment of a PPP session?

***LCP brings the network layer protocols up and down.

It carries packets from several network layer protocols.

It encapsulates and negotiates options for IP and IPX.

It negotiates and sets up control options on the WAN data link.

31 An administrator issues the command confreg 0x2142 at the rommon 1> prompt. Whatis the effect when this router is rebooted?

Contents in RAM will be erased.

***Contents in RAM will be ignored.

Contents in NVRAM will be erased.

Contents in NVRAM will be ignored.

32 Refer to the exhibit. A network administrator is trying to configure a router to use SDM.After this configuration shown in the exhibit is applied, the SDM interface of the router is stillnot accessible. What is the cause of the problem?

***The username and password are not configured correctly.

The authentication method is not configured correctly.

The HTTP timeout policy is not configured correctly.

The vtys are not configured correctly.

33 An administrator learns of an e-mail that has been received by a number of users in thecompany. This e-mail appears to come from the office of the administrator. The e-mail asksthe users to confirm their account and password information. Which type of security threatdoes this e-mail represent?

cracking

***phishing


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phreaking

spamming

34 Refer to the exhibit. The corporate network that is shown has been assigned network172.16.128.0/19 for use at branch office LANs. VLSM is not being used. Which subnet maskwill allow the most efficient utilization of IP addresses?

***/21

/22

/23

/24

/25

/26

35 Refer to the exhibit. How many addresses could be assigned to clients by DHCP_Router?

3

***17

19

51

125

36 Refer to the exhibit. Which data transmission technology is being represented?

***TDM

PPP

HDLC

SLIP


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41 What functionality do access control lists provide when implementing dynamic NAT on aCisco router?

which addresses are allowed to be accessed from the inside network

which addresses are allowed out of the router

which addresses are assigned to a NAT pool

***which addresses are to be translated

42 A network administrator is tasked with maintaining two remote locations in the same city.Both locations use the same service provider and have the same service plan for DSLservice. When comparing download rates, it is noticed that the location on the East side oftown has a faster download rate than the location on the West side of town. How can this beexplained?

The West side has a high volume of POTS traffic.

The West side of town is downloading larger packets.

***The service provider is closer to the location on the East side.

More clients share a connection to the DSLAM on the West side.

43 Refer to the exhibit. Branch A has a non-Cisco router that is using IETF encapsulation andBranch B has a Cisco router. After the commands that are shown are entered, R1 and R2 failto establish the PVC. The R2 LMI is Cisco, and the R1 LMI is ANSI. The LMI is successfullyestablished at both locations. Why is the PVC failing?

The PVC to R1 must be point-to-point.

LMI types must match on each end of a PVC.

The frame relay PVCs cannot be established between Cisco and non-Cisco routers.

***The IETF parameter is missing from the frame-relay map ip 10.10.10.1 201 command.

44 A recently patched application server is experiencing response time problems. Thenetwork on which the application server is located has been experiencing occasionaloutages that the network team believes may be related to recent routing changes. Networkand application teams have been notified to work on their respective issues. Whichstatement applies to this situation?

Only results from the software package should be tested as the network is designed toaccommodate the proposed software platform.


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Scheduling will be easy if the network and software teams work independently.

***It will be difficult to isolate the problem if two teams are implementing changesindependently.

Results from changes will be easier to reconcile and document if each team works inisolation.

45 Refer to the exhibit. R1 is performing NAT overload for the 10.1.1.0/24 inside network.Host A has sent a packet to the web server. What is the destination IP address of the returnpacket from the web server?

10.1.1.2:1234

172.30.20.1:1234

***172.30.20.1:3333

192.168.1.2:80

46 What is a characteristic feature of a worm?

***exploits a known vulnerability

attaches to executable programs

masquerades as a legitmate program

lies dormant until triggered by an event, time, or date

47 When configuring a Frame Relay connection, what is the purpose of Inverse ARP?

to assign a DLCI to a remote peer

to disable peer requests from determining local Layer 3 addresses

to negotiate LMI encapsulations between local and remote Frame Relay peers

***to create a mapping of DLCI to Layer 3 addresses that belong to remote peers

48 A light manufacturing company wishes to replace its DSL service with a non-line-of-sightbroadband wireless solution that offers comparable speeds. Which solution should thecustomer choose?

Wi-Fi

satellite


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***WiMAX

Metro Ethernet

49 Which Frame Relay flow control mechanism is used to signal routers that they shouldreduce the flow rate of frames?

DE

BE

CIR

***FECN

CBIR

50 Which option correctly defines the capacity through the local loop guaranteed to acustomer by the service provider?

BE

DE

***CIR

CBIR

51 Refer to the exhibit. What is placed in the address field in the header of a frame that willtravel from the San Jose router to the DC router?

DLCI 103

***DLCI 301

172.16.1.18

172.16.1.19

52 What are three attributes of a security policy? (Choose three.)

***It provides step-by-step procedures to harden routers and other network devices.

It defines acceptable and unacceptable use of network resources.

It focuses primarily on attacks from outside of the organization.


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***It defines a process for managing security violations.

It should not need to be altered once implemented.

***It creates a basis for legal action if necessary.

Monday, January 17, 2011

E-WAN 4 FINAL

1 A network technician analyzes the network and notices late collisions. The collisions occuraccompanied by jabber that originates from the server. What is the likely cause of theproblem?

faulty switch port
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web server CPU overload

faulty NIC in the web server **********

misconfiguration of web server services

2 Refer to the exhibit. A network administrator configures a standard access control list onRouter1 to prohibit traffic from the 192.168.0.0/24 network from reaching the Internet. Theaccess control list also permits traffic from the 192.168.0.0/24 network to reach the192.168.1.0/24 network. On which interface and in which direction should the access controllist be applied?

interface Fa0/0, inbound

interface Fa0/0, outbound

interface S0/0/0, inbound

interface S0/0/0, outbound *********

3 Which Frame Relay flow control mechanism is used to signal routers that they shouldreduce the flow rate of frames?

DE

BE

CIR

FECN *********

CBIR

4 What is tunneling?

using digital certificates to ensure that data endpoints are authentic

creating a hash to ensure the integrity of data as it traverses a network

using alternate paths to avoid access control lists and bypass security measures

encapsulating an entire packet within another packet for transmission over a network*******


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5 Refer to the exhibit. This serial interface is not functioning correctly. Based on the outputshown, what is the most likely cause?

improper LMI type

interface reset

PPP negotiation failure *******

unplugged cable

6 Refer to the exhibit. Which statement correctly describes how Router1 processes an FTPrequest that enters interface s0/0/0 and is destined for an FTP server at IP address192.168.1.5?

The router matches the incoming packet to the statement that was created by the access-list 201 deny icmp 192.168.1.0 0.0.0.255 any command, continues comparing the packet tothe remaining statements in ACL 201 to ensure that no subsequent statements allow FTP,and then the router drops the packet.

The router reaches the end of ACL 101 without matching a condition and drops the packetbecause there is no statement that was created by the access-list 101 permit ip any anycommand.

The router matches the incoming packet to the statement that was created by the access-list 101 permit ip any 192.168.1.0 0.0.0.255 command and allows the packet into the router.********

It matches the incoming packet to the statement that was created by the access-list 201permit ip any any command and allows the packet into the router.

7 Refer to the exhibit. Headquarters is connected through the Internet to branch office A andbranch office B. Which WAN technology would be best suited to provide secure connectivitybetween headquarters and both branch offices?

ATM

VPN *******

ISDN

Frame Relay

broadband DSL

8 Refer to the exhibit. The corporate network that is shown has been assigned network172.16.128.0/19 for use at branch office LANs. If VLSM is used, what mask should be usedfor addressing hosts at Branch4 with minimal waste from unused addresses?

/19


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/20 ******

/21

/22

/23

/24

9 When would the multipoint keyword be used in Frame Relay PVCs configuration?

when global DLCIs are in use

when using physical interfaces

when multicasts must be supported

when participating routers are in the same subnet ******

10 Which combination of Layer 2 protocol and authentication should be used to establish alink without sending authentication information in plain text between a Cisco and a non-Cisco router?

PPP with PAP

PPP with CHAP *******

HDLC with PAP

HDLC with CHAP

11 Refer to the exhibit. A network administrator is attempting to configure a Frame Relaynetwork. The administrator enters the commands as shown in the exhibit on R2, but theFrame Relay PVCs are inactive. What is the problem?

The incorrect DLCI numbers are being configured on R2. ******

The S0/0/0 interface on R2 needs to be point-to-point.

The frame-relay map commands are missing the cisco keyword at the end.

A single router interface cannot connect to more than one Frame Relay peer at a time.

12 A network administrator has changed the VLAN configurations on his network switchesover the past weekend. How can the administrator determine if the additions and changesimproved performance and availability on the company intranet?**** Conduct a performance test and compare with the baseline that was establishedpreviously. ******

Interview departmental secretaries and determine if they think load time for web pages has


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improved.

Determine performance on the intranet by monitoring load times of company web pagesfrom remote sites.

Compare the hit counts on the company web server for the current week to the values that

were recorded in previous weeks.

13 Refer to the exhibit. R1 is performing NAT overload for the 10.1.1.0/24 inside network.Host A has sent a packet to the web server. What is the destination IP address of the returnpacket from the web server?

10.1.1.2:1234

172.30.20.1:1234

172.30.20.1:3333 ******

192.168.1.2:80

14 Refer to the exhibit. RIPv2 has been configured on all routers in the network. Routers R1and R3 have not received any RIP routing updates. What will fix the issue?

Enable RIP authentication on R2. ******

Issue the ip directed-broadcast command on R2.

Change the subnet masks to 10.11.12.0/8 and 172.16.40.0/16 on R2.

Enable CDP on R2 so that the other routers will receive routing updates.

15 During the initial configuration of a router, the administrator enters the command noservice config. How will the router behave as a a result of this command?

All services will be disabled.

The default configuration will be restored on reboot. ******

Automatic configuration from the network will be prevented.

Services that are configured on the router will not be allowed to originate traffic.


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Refer to the exhibit. A host connected to Fa0/0 is unable to acquire an IP address from theDHCP server. The output of the debug ip dhcp server command shows "DHCPD: there is noaddress pool for 10.1.1.1". What is the problem?

The 10.1.1.1 address is already configured on Fa0/0.

The default router for the 10Network pool is incorrect.

The ip helper-address must be added to Fa0/0 interface.

The pool of addresses for the 10Network pool is incorrect. *******

17An administrator is configuring a dual stack router with IPv6 and IPv4 using RIPng. Theadministrator receives an error message when trying to enter the IPv4 routes into RIPng.What is the cause of the problem?

When IPv4 and IPv6 are configured on the same interface, all IPv4 addresses are over-written in favor of the newer technology.

Incorrect IPv4 addresses are entered on the router interfaces.

RIPng is incompatible with dual-stack technology.

IPv4 is incompatible with RIPng. *******

18

Refer to the exhibit. Results of the show vlan and show vtp status commands for switches S1and S2 are displayed in the exhibit. VLAN 11 was created on S1. Why is VLAN 11 missingfrom S2?

There is a Layer 2 loop.

The VTP domain names do not match. ******

Only one switch can be in server mode.

S2 has a higher spanning-tree priority for VLAN 11 than S1 does.


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19Which statement is true about NCP?

Link termination is the responsibility of NCP.

Each network protocol has a corresponding NCP. *******

NCP establishes the initial link between PPP devices.

NCP tests the link to ensure that the link quality is sufficient.

20Which two statements are true about IPv6 link local addresses? (Choose two.)

They begin with the 2000::/3 prefix. *******

They begin with the FE80::/10 prefix.

They are assigned by IANA to an organization. *******

They must be manually configured by the administrator.

They are assigned to a host by a stateless autoconfiguration process.

21

Refer to the exhibit. A network administrator is creating a prototype to verify the new WANdesign. However, the communication between the two routers cannot be established. Basedon the output of the commands, what can be done to solve the problem?

Replace the serial cable .

Replace the WIC on RA.

Configure RA with a clock rate command. *******

Issue a no shutdown interface command on RB.

22

Refer to the exhibit. Every time the administrator reboots this router, the boot process endsin setup mode. What is a possible problem?

There is insufficient RAM for the IOS to load on this router.


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A password recovery process should be done on this router.

The bootstrap version and the version of the IOS are different.

The IOS image is damaged and must be reloaded using tftpdnld.

The configuration register is set to ignore the startup configuration. ********

23Which IP address and wildcard mask would be used in an ACL to block traffic from all hostson the same subnet as host 192.168.16.43/28?

access-list 10 deny 192.168.16.0 0.0.0.31

access-list 10 deny 192.168.16.16 0.0.0.31

access-list 10 deny 192.168.16.32 0.0.0.16

access-list 10 deny 192.168.16.32 0.0.0.15

access-list 10 deny 192.168.16.43 0.0.0.16 ********

24A network administrator is instructing a technician on best practices for applying ACLs.Which suggestion should the administrator provide?

Named ACLs are less efficient than numbered ACLs.

Standard ACLs should be applied closest to the core layer.

ACLs applied to outbound interfaces are the most efficient.

Extended ACLs should be applied closest to the source that is specified by the ACL. ******

25

Refer to the exhibit. A network administrator is trying to connect R1 remotely to makeconfiguration changes. Based on the exhibited command output, what will be the result

when attempting to connect to R1?

failure to connect due to Telnet not being enabled

failure to connect due to incomplete configuration for Telnet

a successful connection and ability to make configuration changes ******

a successful connection but inability to make configuration changes because of the absence


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of an enable secret password

26What are two effective measures for securing routers? (Choose two.)

Protect all active router interfaces by configuring them as passive interfaces. ******

Configure remote administration through VTY lines for Telnet access. ******

Use quotes or phrases to create pass phrases.

Disable the HTTP server service.

Enable SNMP traps.

27

Refer to the exhibit. Which two conclusions are indicated by the output? (Choose two.)

The router is not experiencing congestion.

DLCI 102 has been active for 30:31 minutes. ****

The upstream router is experiencing congestion.

The downstream router is experiencing congestion.

The virtual circuit cannot be completed until the PVC status changes. ******

28What will be the result of adding the command ip dhcp excluded-address 192.168.24.1192.168.24.5 to the configuration of a local router that has been configured as a DHCPserver?

Traffic that is destined for 192.168.24.1 and 192.168.24.5 will be dropped by the router.

Traffic will not be routed from clients with addresses between 192.168.24.1 and192.168.24.5.

****** The DHCP server will not issue the addresses ranging from 192.168.24.1 to192.168.24.5.

The router will ignore all traffic that comes from the DHCP servers with addresses192.168.24.1 and 192.168.24.5.

29


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Refer to the exhibit. Which data transmission technology is being represented?

TDM *****

PPP

HDLC

SLIP

30When Frame Relay encapsulation is used, what feature provides flow control and exchangesinformation about the status of virtual circuits?

LCP

LMI ******

DLCI

Inverse ARP

1Compared with IDS systems, what can IPS systems do to provide further protection ofcomputer systems?

detect potential attacks

stop the detected attack from executing

update OS patches for computer systems

scan computer systems for viruses and spyware

32A network administrator is tasked with maintaining two remote locations in the same city.

Both locations use the same service provider and have the same service plan for DSLservice. When comparing download rates, it is noticed that the location on the East side oftown has a faster download rate than the location on the West side of town. How can this beexplained?

The West side has a high volume of POTS traffic.

The West side of town is downloading larger packets.


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The service provider is closer to the location on the East side.

More clients share a connection to the DSLAM on the West side.

33Which three guidelines would help contribute to creating a strong password policy? (Choosethree.)

Once a good password is created, do not change it.

Deliberately misspell words when creating passwords.

Create passwords that are at least 8 characters in length.

Use combinations of upper case, lower case, and special characters.

Write passwords in locations that can be easily retrieved to avoid being locked out.

Use long words found in the dictionary to make passwords that are easy to remember.

34While troubleshooting a problem with an e-mail server, an administrator observes that theswitch port used by the server shows "up, line protocol up". The administrator cannot pingthe server. At which layer of the OSI model is the problem most likely to be found?

application layer

network layer

data link layer

physical layer

35What functionality do access control lists provide in the implementation of dynamic NAT on aCisco router?

define which addresses can be translated

define which addresses are assigned to a NAT pool

define which addresses are allowed out the router

define which addresses can be accessed from the inside network

36Which option correctly defines the capacity through the local loop guaranteed to a customer


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The Serial0/0/1 interface acquired 172.16.3.1 from a DHCP server.

The mapping between DLCI 100 and 172.16.3.1 was learned through Inverse ARP.

DLCI 100 will automatically adapt to changes in the Frame Relay cloud.

40

Refer to the exhibit. Based on the output as shown, which two statements correctly definehow the router will treat Telnet traffic that comes into interface FastEthernet 0/1? (Choosetwo).






41Which type of ACL will permit traffic inbound into a private network only if an outboundsession has already been established between the source and destination?

extended

reflexive

standard

time-based

42A company is looking for a WAN solution to connect its headquarters site to four remotesites. What are two advantages that dedicated leased lines provide compared to a sharedFrame Relay solution? (Choose two.)

reduced jitter

reduced costs

reduced latency

the ability to burst above guaranteed bandwidth


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the ability to borrow unused bandwidth from the leased lines of other customers

43

Refer to the exhibit. Partial results of the show access-lists and show ip interfaceFastEthernet 0/1 commands for router Router1 are shown. There are no other ACLs in effect.Host A is unable to telnet to host B. Which action will correct the problem but still restrictother traffic between the two networks?

Apply the ACL in the inbound direction.

Apply the ACL on the FastEthernet 0/0 interface.

Reverse the order of the TCP protocol statements in the ACL.

Modify the second entry in the list to permit tcp host 172.16.10.10 any eq telnet .

44Which IEEE 802.16 broadband wireless technology allows users to connect to the ISP atspeeds comparable to DSL and cable?

Wi-Fi

satellite

WiMAX

Metro Ethernet

45Which technology is used to dynamically map next hop, network layer addresses to virtualcircuits in a Frame Relay network?

Inverse ARP

LMI

DLCI

FECN


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Refer to the exhibit. All devices are configured as shown in the exhibit. PC1 is unable to pingthe default gateway. What is the cause of the problem?

The default gateway is in the wrong subnet.

STP has blocked the port that PC1 is connected to.

Port Fa0/2 on S2 is assigned to the wrong VLAN.

S2 has the wrong IP address assigned to the VLAN30 interface.

47Which statement is true about PAP in the authentication of a PPP session?

PAP uses a two-way handshake.

The password is unique and random.

PAP conducts periodic password challenges.

PAP uses MD5 hashing to keep the password secure.

48Where does a service provider assume responsibility from a customer for a WANconnection?

local loop

DTE cable on router

demarcation point

demilitarized zone

49Which configuration on the vty lines provides the best security measure for networkadministrators to remotely access the core routers at headquarters?


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does this e-mail represent?

cracking

phishing

phreaking

spamming

Posted by Cisco Network Academy Program at 6:52 AM0 comments

EWAN Practice Final Exam

1 Which address provides an example of an IPv6 link-local address?

FE80::1324:ABCD

2001:2345:AB12:1935::FEFF2001:1234:0000:9CA::0876/641234:ABCD:5678:EF00:9234:AA22:5527:FC35

Observable Description Max Value1 correctness of response 2 points for Option 10 points for any other option 2

This item references content from the following areas:CCNA Exploration: Accessing the WAN

7.3.2 IPv6 Addressing

2 While configuring a router using RIPng and dual-stack technology with IPv4 and IPv6, theadministrator receives an error message when inputting IPv4 routes. What could cause theerror message?

IPv4 is not compatible with RIPngRIPng is incompatible with dual-stack technology.

The router interfaces have been configured with incorrect addresses.When IPv4 and IPv6 are configured on the same interface, all IPv4 addresses are shut downin favor of the newer technology.


This item references content from the following areas:CCNA Exploration: Accessing the WAN7.3.6 Routing Considerations with IPv6
http://cisconetworkacademyprogram.blogspot.com/http://cisconetworkacademyprogram.blogspot.com/#commentshttp://cisconetworkacademyprogram.blogspot.com/2011/01/ewan-practice-final-exam.htmlhttp://cisconetworkacademyprogram.blogspot.com/http://cisconetworkacademyprogram.blogspot.com/#commentshttp://cisconetworkacademyprogram.blogspot.com/2011/01/ewan-practice-final-exam.html


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3 Which statement is true about an interface that is configured with the IPv6 addresscommand?

IPv6 traffic-forwarding is enabled on the interface.

A link-local IPv6 address is automatically configured on the interface.A global unicast IPv6 address is dynamically configured the interface.Any IPv4 addresses that are assigned to the interface are replaced with an IPv6 address.


This item references content from the following areas:CCNA Exploration: Accessing the WAN7.3.7 Configuring IPv6 Addresses

4 What will be the result of adding the command ip dhcp excluded-address 172.16.4.1172.16.4.5 to the configuration of a local router that has been configured as a DHCP server?

Traffic that is destined for 172.16.4.1 and 172.16.4.5 will be dropped by the router.Traffic will not be routed from clients with addresses between 172.16.4.1 and 172.16.4.5.The DHCP server function of the router will not issue the addresses between 172.16.4.1 and172.16.4.5.

The router will ignore all traffic that comes from the DHCP servers with addresses 172.16.4.1and 172.16.4.5.


This item references content from the following areas:CCNA Exploration: Accessing the WAN7.1.4 Configuring a DHCP Server

5

Refer to the exhibit. A host that is connected to Fa0/0 is unable to acquire an IP addressdynamically from the DHCP server. The output of the debug ip dhcp server command shows"DHCPD: there is no address pool for 172.16.1.1". What is the problem?

The default router for the 172Network pool is incorrect.The 172.16.1.1 address is already configured on Fa0/0.The pool of addresses for the 172Network pool is incorrect.The ip helper-address command should be implemented on the Fa0/0 interface.


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This item references content from the following areas:CCNA Exploration: Accessing the WAN7.1.8 Troubleshooting DHCP

6 What does an access control list determine when used with NAT on a Cisco router?

addresses that are to be translatedaddresses that are assigned to a NAT pooladdresses that are allowed out of the routeraddresses that are accessible from the inside network


This item references content from the following areas:CCNA Exploration: Accessing the WAN7.2.5 Configuring Dynamic NAT

7 A system administrator must provide Internet connectivity for ten hosts in a small remoteoffice. The ISP has assigned two public IP addresses to this remote office. How can thesystem administrator configure the router to provide Internet access to all ten users at thesame time?

Configure static NAT.Configure dynamic NAT.Configure static NAT with overload.Configure dynamic NAT with overload.

Observable Description Max Value1 correctness of response 2 points for Option 4

0 points for any other option 2

This item references content from the following areas:CCNA Exploration: Accessing the WAN7.2.6 Configuring NAT Overload

8 What three statements describe the roles of devices in a WAN? (Choose three.)


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A CSU/DSU terminates a digital local loop.A modem terminates a digital local loop.A CSU/DSU terminates an analog local loop.A modem terminates an analog local loop.A router is commonly considered a DTE device.A router is commonly considered a DCE device.

Observable Description Max Value1 correctness of response Option 1, Option 4, and Option 5 are correct.1 point for each correct option.0 points if more options are selected than required. 3

This item references content from the following areas:CCNA Exploration: Accessing the WAN1.2.2 WAN Physical Layer Concepts

9 At what physical location does the responsibility for a WAN connection change from theservice provider to the user?

DMZlocal loopCSU/DSUdemarcation point


This item references content from the following areas:CCNA Exploration: Accessing the WAN2.1.3 Demarcation Point

10

Refer to the exhibit. Which statement is true about the WAN switch device?

It uses a multiport internetworking device to switch traffic such as Frame Relay, ATM or X.25over the WAN.

It provides internetworking and WAN access interface ports that are used to connect to theservice provider network.It provides termination for the digital signal and ensures connection integrity through errorcorrection and line monitoring.It converts the digital signals produced by a computer into voice frequencies that can betransmitted over the analog lines of the public telephone network.


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This item references content from the following areas:

CCNA Exploration: Accessing the WAN1.2.2 WAN Physical Layer Concepts

11

Refer to the exhibit. A network administrator is using two routers to test a WAN connection .What can be concluded based on the output of the show running-config commands?

The WAN link is using PPP encapsulation.The WAN link speed is faster than a T1 line.The router R2 serves as the DCE for the WAN link.The WAN link is configured with the Cisco default encapsulation protocol.


This item references content from the following areas:CCNA Exploration: Accessing the WAN2.1.5 HDLC Encapsulation

12 Which important piece of troubleshooting information can be discovered about a serialinterface using the show controllers command?

queuing strategyserial cable typeinterface IP addressencapsulation method


This item references content from the following areas:CCNA Exploration: Accessing the WAN2.1.7 Troubleshooting a Serial Interface

13 Which combination of Layer 2 protocol and authentication should be used to establish alink between a Cisco and a non-Cisco router without sending authentication information inplain text?


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CCNA Exploration: Accessing the WAN2.2.5 Establishing a Link with LCP

16

Refer to the exhibit. Why are the routers unable to establish a PPP session?

The usernames are misconfigured.The IP addresses are on different subnets.The clock rate is configured on the wrong end of the link.The CHAP passwords must be different on the two routers.Interface serial 0/0/0 on Router1 must connect to interface serial 0/0/1 on Router2.


This item references content from the following areas:CCNA Exploration: Accessing the WAN2.4.5 Configuring PPP with Authentication

17

Refer to the exhibit. What would be the result of entering the exhibited configuration on aFrame Relay router?

The local interface DLCI will be set to 102.All traffic that is destined to 172.16.16.8 will be sent as broadcast.Only broadcast traffic will be recieved on the Frame Relay interface.Routing protocol multicast updates can be forwarded across the Frame Relay PVC.


This item references content from the following areas:CCNA Exploration: Accessing the WAN3.2.2 Configuring Static Frame Relay Maps

18

Refer to the exhibit. What is placed in the address field in the header of a frame that willtravel from the DC office of ABC Company to the Orlando office?

MAC address of the Orlando routerMAC address of the DC router


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192.168.1.25192.168.1.26DLCI 100DLCI 200


This item references content from the following areas:CCNA Exploration: Accessing the WAN3.1.3 Frame Relay Encapsulation

19 A company uses a PVC with a committed information rate (CIR) of 128 kb/s and acommitted burst information rate (CBIR) of 64 kb/s. The link is used to periodically sendupdates at a rate of 144 kb/s. What will happen to the update traffic?

The traffic will be sent, but the company will be charged a penalty.The traffic will be sent using the additional CBIR and will be guaranteed delivery.The traffic will be dropped at the CO for exceeding the committed information rate.The traffic will be sent, but the burst traffic will be marked for discard if congestion isencountered.


This item references content from the following areas:CCNA Exploration: Accessing the WAN3.3.2 Paying for Frame Relay

20 Which two functions are provided by the Local Management Interface (LMI) that is used inFrame Relay networks? (Choose two.)

flow controlerror notificationcongestion notificationthe mapping of DLCIs to network addresses

the sending of keepalive packets to verify operation of the PVC

Observable Description Max Value1 correctness of response Option 1 and Option 5 are correct.1 point for each correct option.0 points if more options are selected than required. 2


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This item references content from the following areas:CCNA Exploration: Accessing the WAN3.1.5 Frame Relay Address Mapping

21

Refer to the exhibit. You are a network administrator who has been tasked with completingthe Frame Relay topology that interconnects two remote sites. How should the point-to-pointsubinterfaces be configured on HQ to complete the topology?

HQ(config-subif)#frame-relay interface-dlci 103 on Serial 0/0/0.1HQ(config-subif)#frame-relay interface-dlci 203 on Serial 0/0/0.2HQ(config-subif)#frame-relay interface-dlci 301 on Serial 0/0/0.1HQ(config-subif)# frame-relay interface-dlci 302 on Serial 0/0/0.2HQ(config-subif)#frame-relay map ip 172.16.1.1 103 broadcast on Serial 0/0/0.1HQ(config-subif)#frame-relay map ip 172.16.2.2 203 broadcast on Serial 0/0/0.2HQ(config-subif)#frame-relay map ip 172.16.1.1 301 broadcast on Serial 0/0/0.1HQ(config-subif)#frame-relay map ip 172.16.2.2 302 broadcast on Serial 0/0/0.2


This item references content from the following areas:CCNA Exploration: Accessing the WAN3.4.1 Configuring Frame Relay Subinterfaces

22

Refer to the exhibit. Branch A has a Cisco router. Branch B has a non-Cisco router set forIETF encapsulation. After the commands shown are entered, R2 and R3 fail to establish thePVC. The R2 LMI is Cisco, and the R3 LMI is ANSI. The LMI is successfully established at bothlocations. Why is the PVC failing?

The PVC to R3 must be point-to-point.LMI types must match on each end of a PVC.

The ietf parameter is missing from the frame-relay map ip 10.10.10.3 203 command.The PVCs at R2 use different encapsulation types. A single port can only support oneencapsulation type.




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3.1.5 Frame Relay Address Mapping

23

Refer to the exhibit. A technician is teaching a trainee to interpret the results of various

Frame Relay troubleshooting commands. What conclusion can be drawn from the outputthat is shown?

Neighboring routers should use DLCI 177 to reach the Branch router.DLCI 177 will be used to identify all broadcasts that are sent out the Branch router.

The Branch router has the address 192.168.3.1 configured for the S0/0/0 interface.To reach 192.168.3.1, the Branch router will use the virtual circuit that is identified by DLCI177.


This item references content from the following areas:CCNA Exploration: Accessing the WAN3.1.5 Frame Relay Address Mapping

24

Refer to the exhibit. Which statement is true about the status of the Frame Relayconnection?

The Frame Relay connection is in the process of negotiation.Only packets with control bit DE set are sent over the PVC. No data traffic traverses the link.Packets marked as FECN and BECN indicate that a congestion control mechanism is enabledon the Frame Relay PVC.

The DLCI USAGE = LOCAL status indicates that the PVC link is not established between theinterface S0/0/0.1 and the Frame Relay switch.


This item references content from the following areas:CCNA Exploration: Accessing the WAN3.3.3 Frame Relay Flow Control

25 Which wireless solution can provide mobile users with non line-of-sight broadbandInternet access at speeds comparable to DSL or cable?

Wi-Fi


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WiMAXsatelliteMetro Ethernet


This item references content from the following areas:CCNA Exploration: Accessing the WAN1.3.5 Internet Connection Options

26 What are two characteristics of DSL technology? (Choose two.)

Uploads typically offer larger transfer rates than downloads.Service providers deploy DSL in the local loop of the telephone network.DSL download rates are reduced by large volumes of POTS voice traffic.Filters and splitters allow POTS and DSL traffic to share the same medium.DSL is a shared medium that allows many users to share bandwidth available from theDSLAM.


This item references content from the following areas:CCNA Exploration: Accessing the WAN6.2.3 DSL

27

Refer to the exhibit. A packet is being sent from Host A to Host B through the VPN tunnelbetween R1 and R3. When the packet first arrives at R3, what are the source and destinationIP addresses of the packet?

Source 192.168.1.2 - Destination 192.168.4.2Source 192.168.3.1 - Destination 192.168.3.2




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4.2.4 Securing Remote Administrative Access to Routers

31 What will be the result of the enable secret command when added at the globalconfiguration mode on the router?

It will use MD5 encryption to protect the privileged EXEC level access.It will use type 7 encryption and will encrypt only the privileged EXEC level passwords.It will use type 7 encryption to prevent all passwords that are displayed on the screen frombeing readable.It will use MD5 encryption to protect the passwords that are only used in the PAP and CHAPauthentication process.


This item references content from the following areas:CCNA Exploration: Accessing the WAN4.2.3 Manage Router Security

32

Refer to the exhibit. A network administrator is trying to backup the IOS software on R1 tothe TFTP server. He receives the error message that is shown in the exhibit, and cannot pingthe TFTP server from R1. What action can help to isolate this problem?

Check that R1 has a route to the 10.10.10.0 network.Verify that the TFTP server software supports binary file transfers.Make sure that the TFTP server has 192.168.1.1 as its default gateway.Ensure that the laptop has an IP address in the 192.168.1.0/24 network.

Observable Description Max Value

1 correctness of response 2 points for Option 10 points for any other option 2

This item references content from the following areas:CCNA Exploration: Accessing the WAN4.5.4 Backing up and Upgrading Software Image

33 A network technician accidentally deleted the IOS image from flash and rebooted the


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router. Which two options can be used to restore the IOS image? (Choose two.)

Perform a system restore through SDM.Download the image from a TFTP server through a network connection.Download the image from a TFTP server through a console connection.Establish an FTP session through an SSH connection for the image download.

Use the Xmodem protocol to download the image through a console connection.


This item references content from the following areas:CCNA Exploration: Accessing the WAN4.5.5 Recovering Software Images

34

Refer to the exhibit. The network administrator creates a standard access control list toprohibit traffic from the 192.168.1.0/24 network from reaching the 192.168.2.0/24 networkwhile still permitting Internet access for all networks. On which router interface and in whichdirection should it be applied?

interface fa0/0/0, inboundinterface fa0/0/0, outboundinterface fa0/0/1, inboundinterface fa0/0/1, outbound


This item references content from the following areas:CCNA Exploration: Accessing the WAN5.1.8 Where to Place ACLs

35 What effect would the Router1(config-ext-nacl)# permit tcp 172.16.4.0 0.0.0.255 any eq

www command have when implemented inbound on the f0/0 interface?

All TCP traffic is permitted, and all other traffic is denied.The command is rejected by the router because it is incomplete.All traffic from 172.16.4.0/24 is permitted anywhere on any port.

Traffic originating from 172.16.4.0/24 is permitted to all TCP port 80 destinations.


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CCNA Exploration: Accessing the WAN5.3.4 Creating Named Extended ACLs

36

Refer to the exhibit. Which two statements correctly describe how Router1 processes an FTPrequest that enters interface S0/0/0 and is destined for an FTP server at IP address192.168.1.5? (Choose two.)

The packet does not match an access list condition.The router matches the incoming packet to the statement that is created from the access-list 201 permit ip any any command.

The router matches the incoming packet to the statement that is created from the access-list 101 permit ip any 192.168.1.0 0.0.0.255 command.

The router matches the incoming packet to the statement that is created from the access-list 201 deny icmp 192.168.1.0 0.0.0.255 any command.

The packet is allowed into Router1.


This item references content from the following areas:CCNA Exploration: Accessing the WAN5.1.4 ACL Operation

37

Refer to the exhibit. An ACL numbered 101 already exists on this router. What happens if thenetwork administrator issues the commands that are shown in the exhibit?

The new ACL overwrites the existing ACL.The network administrator will receive an error message.The existing ACL is modified to include the new commands.

A second ACL that is numbered 101 is created and contains only the new commands.



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This item references content from the following areas:CCNA Exploration: Accessing the WAN5.2.5 Editing Numbered ACLs

38

Refer to the exhibit. What is the effect of the extended ACL when applied inbound on theS0/0/0 interface on R2?

All IP traffic will be permitted during the specified days and time range.Both IP and Telnet traffic will be permitted during the specified days and time range.Only Telnet traffic destined for 172.16.10.0/24 will be permitted during the specified daysand time range.

Telnet traffic will be permitted only during the specified days and time range. All othernetwork traffic will be permitted any time.


This item references content from the following areas:CCNA Exploration: Accessing the WAN5.4.4 Time-based ACLs

39 Which wildcard mask would specify all IP addresses from 192.168.8.0 through192.168.15.255?

0.0.0.70.0.7.2550.0.8.2550.0.15.2550.0.255.255



CCNA Exploration: Accessing the WAN5.2.3 ACL Wildcard Masking

40

Refer to the exhibit. The SSH connections between the remote user and the server arefailing. The correct configuration of NAT has been verified. What is the most likely cause ofthe problem?


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SSH is unable to pass through NAT.There are incorrect access control list entries.The access list has the incorrect port number for SSH.The ip helper command is required on S0/0/0 to allow inbound connections.


This item references content from the following areas:CCNA Exploration: Accessing the WAN8.4.5 Transport Layer Troubleshooting

41 A network administrator added two switches and a new VLAN over the past weekend.How can the administrator determine if the additions and changes improved performanceand availability on the company intranet?

Perform a baseline test and compare the current values to values that were obtained inprevious weeks.Interview departmental secretaries and determine if they think load time for web pages isimproved.Compare the hit counts on the company web server for the current week to the values thatwere recorded from previous weeks.Performance on the intranet can be determined by monitoring load times of company webpages from remote sites.


This item references content from the following areas:CCNA Exploration: Accessing the WAN8.1.3 Why is Establishing a Network Baseline Important?

42 A company has its headquarters office in Dallas and five branch offices located in NewYork, Chicago, Los Angeles, Seattle, and Atlanta. WAN links are used for communicationsamong offices in six sites. In planning the WAN links, the network designer is given two

requirements: (1) minimize cost and (2) provide a certain level of WAN link reliability withredundant links. Which topology should the network designer recommend?

starfull meshhierarchicalpartial mesh


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This item references content from the following areas:CCNA Exploration: Accessing the WAN8.3.4 WAN Topology Considerations

43

Refer to the exhibit. Router1 and Router2 each support separate areas of a data center, andare connected via a crossover cable. Resources attached to Router1 are unable to connectto resources attached to Router2. What is the likely cause?

The crossover cable is faulty.The IP addressing is incorrect.There is a Layer 2 problem with the router connection.The upper layers are experiencing an unspecified problem.One or both of the Ethernet interfaces are not working correctly.


This item references content from the following areas:CCNA Exploration: Accessing the WAN8.4.4 Network Layer Troubleshooting

44 An administrator is unable to receive e-mail. While troubleshooting the problem, theadministrator is able to ping the local mail server IP address successfully from a remotenetwork and can successfully resolve the mail server name to an IP address via the use ofthe nslookup command. At what layer of the OSI model is the problem most likely to befound?

applicationtransportnetworkdata link




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Refer to the exhibit. Which VLAN will carry untagged traffic on FastEthernet 0/1?

VLAN 1VLAN 2VLAN 11VLAN 12

VLAN 30VLAN 999


This item references content from the following areas:CCNA Exploration: Accessing the WAN8.5.3 Troubleshooting Enterprise Networks 3

48

Refer to the exhibit. In the partial router configuration that is shown, what is the purpose ofaccess list BLOCK_XYZ?

to prevent source IP address spoofing by hosts on the Fa0/0 LANto block access by Fa0/0 LAN hosts to all network services beyond the routerto prevent users on the Fa0/0 LAN from opening Telnet sessions on the routerto secure Fa0/0 hosts by allowing only locally sourced traffic into the Fa0/0 LAN


This item references content from the following areas:CCNA Exploration: Accessing the WAN5.2.6 Creating Standard Named ACLs

49

Refer to the exhibit. Routers R1 and R2 are both configured for single area OSPF. Users who

are connected to switch S1 are unable to access database applications that run on serversthat are connected to S2. The network engineer is working remotely and only has theinformation that is shown in the exhibit to direct initial troubleshooting efforts. Based on theexhibit, which OSI layer is the most appropriate to start with for a divide-and-conquerapproach?

network layerapplication layerdata-link layer


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1 correctness of response 2 points for Option 1



CCNA Exploration: Accessing the WAN7.3.2 IPv6 Addressing

2 While configuring a router using RIPng and dual-stack technology with IPv4 and IPv6, theadministrator receives an error message when inputting IPv4 routes. What could cause the error

message?

IPv4 is not compatible with RIPngRIPng is incompatible with dual-stack technology.

The router interfaces have been configured with incorrect addresses.When IPv4 and IPv6 are configured on the same interface, all IPv4 addresses are shut down in

favor of the newer technology.




CCNA Exploration: Accessing the WAN

7.3.6 Routing Considerations with IPv6

3 Which statement is true about an interface that is configured with the IPv6 address command?

IPv6 traffic-forwarding is enabled on the interface.

A link-local IPv6 address is automatically configured on the interface.

A global unicast IPv6 address is dynamically configured the interface.Any IPv4 addresses that are assigned to the interface are replaced with an IPv6 address.




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7.3.7 Configuring IPv6 Addresses

4 What will be the result of adding the command ip dhcp excluded-address 172.16.4.1 172.16.4.5

to the configuration of a local router that has been configured as a DHCP server?

Traffic that is destined for 172.16.4.1 and 172.16.4.5 will be dropped by the router.

Traffic will not be routed from clients with addresses between 172.16.4.1 and 172.16.4.5.

The DHCP server function of the router will not issue the addresses between 172.16.4.1 and172.16.4.5.

The router will ignore all traffic that comes from the DHCP servers with addresses 172.16.4.1

and 172.16.4.5.





CCNA Exploration: Accessing the WAN7.1.4 Configuring a DHCP Server

5

Refer to the exhibit. A host that is connected to Fa0/0 is unable to acquire an IP addressdynamically from the DHCP server. The output of the debug ip dhcp server command shows

"DHCPD: there is no address pool for 172.16.1.1". What is the problem?

The default router for the 172Network pool is incorrect.The 172.16.1.1 address is already configured on Fa0/0.

The pool of addresses for the 172Network pool is incorrect.

The ip helper-address command should be implemented on the Fa0/0 interface.





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CCNA Exploration: Accessing the WAN7.1.8 Troubleshooting DHCP

6 What does an access control list determine when used with NAT on a Cisco router?

addresses that are to be translatedaddresses that are assigned to a NAT pool

addresses that are allowed out of the router

addresses that are accessible from the inside network





7.2.5 Configuring Dynamic NAT

7 A system administrator must provide Internet connectivity for ten hosts in a small remoteoffice. The ISP has assigned two public IP addresses to this remote office. How can the system

administrator configure the router to provide Internet access to all ten users at the same time?

Configure static NAT.

Configure dynamic NAT.

Configure static NAT with overload.Configure dynamic NAT with overload.




7.2.6 Configuring NAT Overload


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8 What three statements describe the roles of devices in a WAN? (Choose three.)

A CSU/DSU terminates a digital local loop.A modem terminates a digital local loop.

A CSU/DSU terminates an analog local loop.

A modem terminates an analog local loop.A router is commonly considered a DTE device.

A router is commonly considered a DCE device.

Observable Description Max Value1 correctness of response Option 1, Option 4, and Option 5 are correct.

1 point for each correct option.

0 points if more options are selected than required. 3


CCNA Exploration: Accessing the WAN1.2.2 WAN Physical Layer Concepts

9 At what physical location does the responsibility for a WAN connection change from theservice provider to the user?

DMZlocal loop

CSU/DSU

demarcation point





CCNA Exploration: Accessing the WAN2.1.3 Demarcation Point

10

Refer to the exhibit. Which statement is true about the WAN switch device?


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It uses a multiport internetworking device to switch traffic such as Frame Relay, ATM or X.25

over the WAN.

It provides internetworking and WAN access interface ports that are used to connect to theservice provider network.

It provides termination for the digital signal and ensures connection integrity through error

correction and line monitoring.It converts the digital signals produced by a computer into voice frequencies that can be

transmitted over the analog lines of the public telephone network.




1.2.2 WAN Physical Layer Concepts

11

Refer to the exhibit. A network administrator is using two routers to test a WAN connection .

What can be concluded based on the output of the show running-config commands?

The WAN link is using PPP encapsulation.

The WAN link speed is faster than a T1 line.

The router R2 serves as the DCE for the WAN link.The WAN link is configured with the Cisco default encapsulation protocol.




2.1.5 HDLC Encapsulation

12 Which important piece of troubleshooting information can be discovered about a serial

interface using the show controllers command?


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queuing strategy

serial cable type

interface IP addressencapsulation method




2.1.7 Troubleshooting a Serial Interface

13 Which combination of Layer 2 protocol and authentication should be used to establish a link

between a Cisco and a non-Cisco router without sending authentication information in plain text?

HDLC with PAP

HDLC with CHAPPPP with PAP

PPP with CHAP






2.4.1 PPP Authentication Protocols2.4.3 Challenge Handshake Authentication Protocol (CHAP)

14 Which three items are LCP options that can be configured for PPP? (Choose three.)

CHAPStacker

IPCP

CDPCP

Multilink


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CCNA Exploration: Accessing the WAN2.4.5 Configuring PPP with Authentication

17

Refer to the exhibit. What would be the result of entering the exhibited configuration on a Frame

Relay router?

The local interface DLCI will be set to 102.

All traffic that is destined to 172.16.16.8 will be sent as broadcast.

Only broadcast traffic will be recieved on the Frame Relay interface.Routing protocol multicast updates can be forwarded across the Frame Relay PVC.





3.2.2 Configuring Static Frame Relay Maps

18

Refer to the exhibit. What is placed in the address field in the header of a frame that will travel

from the DC office of ABC Company to the Orlando office?

MAC address of the Orlando router

MAC address of the DC router

192.168.1.25192.168.1.26

DLCI 100

DLCI 200


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CCNA Exploration: Accessing the WAN3.1.3 Frame Relay Encapsulation

19 A company uses a PVC with a committed information rate (CIR) of 128 kb/s and a committed

burst information rate (CBIR) of 64 kb/s. The link is used to periodically send updates at a rate

of 144 kb/s. What will happen to the update traffic?

The traffic will be sent, but the company will be charged a penalty.

The traffic will be sent using the additional CBIR and will be guaranteed delivery.

The traffic will be dropped at the CO for exceeding the committed information rate.

The traffic will be sent, but the burst traffic will be marked for discard if congestion isencountered.





3.3.2 Paying for Frame Relay

20 Which two functions are provided by the Local Management Interface (LMI) that is used inFrame Relay networks? (Choose two.)

flow control

error notificationcongestion notification

the mapping of DLCIs to network addresses

the sending of keepalive packets to verify operation of the PVC


1 correctness of response Option 1 and Option 5 are correct.



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3.1.5 Frame Relay Address Mapping

21

Refer to the exhibit. You are a network administrator who has been tasked with completing the

Frame Relay topology that interconnects two remote sites. How should the point-to-point

subinterfaces be configured on HQ to complete the topology?

HQ(config-subif)#frame-relay interface-dlci 103 on Serial 0/0/0.1



HQ(config-subif)# frame-relay interface-dlci 302 on Serial 0/0/0.2HQ(config-subif)#frame-relay map ip 172.16.1.1 103 broadcast on Serial 0/0/0.1

HQ(config-subif)#frame-relay map ip 172.16.2.2 203 broadcast on Serial 0/0/0.2HQ(config-subif)#frame-relay map ip 172.16.1.1 301 broadcast on Serial 0/0/0.1

HQ(config-subif)#frame-relay map ip 172.16.2.2 302 broadcast on Serial 0/0/0.2





3.4.1 Configuring Frame Relay Subinterfaces

22

Refer to the exhibit. Branch A has a Cisco router. Branch B has a non-Cisco router set for IETF

encapsulation. After the commands shown are entered, R2 and R3 fail to establish the PVC. The

R2 LMI is Cisco, and the R3 LMI is ANSI. The LMI is successfully established at bothlocations. Why is the PVC failing?

The PVC to R3 must be point-to-point.LMI types must match on each end of a PVC.

The ietf parameter is missing from the frame-relay map ip 10.10.10.3 203 command.

The PVCs at R2 use different encapsulation types. A single port can only support one

encapsulation type.


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6.2.3 DSL

27

Refer to the exhibit. A packet is being sent from Host A to Host B through the VPN tunnel

between R1 and R3. When the packet first arrives at R3, what are the source and destination IP

addresses of the packet?

Source 192.168.1.2 - Destination 192.168.4.2

Source 192.168.3.1 - Destination 192.168.3.2






6.3.5 VPN Tunneling

28 What is a major characteristic of a worm?

malicious software that copies itself into other executable programs

tricks users into running the infected software

a set of computer instructions that lies dormant until triggered by a specific eventexploits vulnerabilities with the intent of propagating itself across a network





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4.1.3 Types of Network Attacks

29 What is the function of an IDS?

to report the attack after it happens

to stop the attack prior to its completion

to quarantine the virus or worm so as not to infect any other hostto reconfigure the security policy of a firewall to prevent another attack





4.1.4 General Mitigation Techniques

30 When configuring remote access to a router, what is the significance of the no password

command on a VTY line?

Logins are prevented on that line.

No password is required to log in to that line.

The remote user is not allowed to change the password for that line.The remote user is prompted to change the line password after connecting to the router.




4.2.4 Securing Remote Administrative Access to Routers

31 What will be the result of the enable secret command when added at the global configuration

mode on the router?


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It will use MD5 encryption to protect the privileged EXEC level access.

It will use type 7 encryption and will encrypt only the privileged EXEC level passwords.

It will use type 7 encryption to prevent all passwords that are displayed on the screen from beingreadable.

It will use MD5 encryption to protect the passwords that are only used in the PAP and CHAP

authentication process.






4.2.3 Manage Router Security

32

Refer to the exhibit. A network administrator is trying to backup the IOS software on R1 to the

TFTP server. He receives the error message that is shown in the exhibit, and cannot ping theTFTP server from R1. What action can help to isolate this problem?

Check that R1 has a route to the 10.10.10.0 network.Verify that the TFTP server software supports binary file transfers.

Make sure that the TFTP server has 192.168.1.1 as its default gateway.

Ensure that the laptop has an IP address in the 192.168.1.0/24 network.





CCNA Exploration: Accessing the WAN4.5.4 Backing up and Upgrading Software Image

33 A network technician accidentally deleted the IOS image from flash and rebooted the router.

Which two options can be used to restore the IOS image? (Choose two.)

Perform a system restore through SDM.


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Download the image from a TFTP server through a network connection.

Download the image from a TFTP server through a console connection.

Establish an FTP session through an SSH connection for the image download.Use the Xmodem protocol to download the image through a console connection.

Observable Description Max Value1 correctness of response Option 2 and Option 5 are correct.





4.5.5 Recovering Software Images

34

Refer to the exhibit. The network administrator creates a standard access control list to prohibit

traffic from the 192.168.1.0/24 network from reaching the 192.168.2.0/24 network while still

permitting Internet access for all networks. On which router interface and in which directionshould it be applied?

interface fa0/0/0, inboundinterface fa0/0/0, outbound

interface fa0/0/1, inbound

interface fa0/0/1, outbound





CCNA Exploration: Accessing the WAN5.1.8 Where to Place ACLs

35 What effect would the Router1(config-ext-nacl)# permit tcp 172.16.4.0 0.0.0.255 any eq

www command have when implemented inbound on the f0/0 interface?

All TCP traffic is permitted, and all other traffic is denied.

8/3/2019 e Wan Fin

e Wan Finals

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