CCNA 2 Final V4.1 Answers

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CCNA 2 Final V4.1

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1 A company is developing an Internet store for its website. Which protocol should be

used to transfer credit card information from customers to the company web server?

FTPS

HTTP

** HTTPS

WEP2

TFTP

2 Refer to the exhibit. A new branch office has been added to the corporate network

and a new router is to be installed to allow branch office users to access the database

server at headquarters. How should the serial 0/0/0 interface of the new branch office

router be configured to connect to the headquarters router?

branch_23(config-if)# ip address 192.168.5.19 255.255.255.240

branch_23(config-if)# no shutdown

branch_23(config-if)# encapsulation hdlc



branch_23(config-if)# encapsulation ppp


branch_23(config-if)# encapsulation ppp


**branch_23(config-if)# encapsulation ppp



3Which two commands ensure that any password that permits access to the privileged

EXEC mode is not shown in plain text when the configuration files are displayed?

(Choose two.)

** Router(config)# enable secret cisco

Router(config)# enable cisco

Router(config)# encryption-password all

Router(config)# enable login encrypted

Router(config)# enable password encryption

** Router(config)# service password-encryption

4A new network is to be configured on a router. Which of the following tasks must be

completed to configure this interface and implement dynamic IP routing for the new

network? (Choose three.)

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** Select the routing protocol to be configured.

** Assign an IP address and subnet mask to the interface

Update the ip host configuration information with the device name and new interface

IP address.

** Configure the routing protocol with the new network IP address.

Configure the routing protocol with the new interface IP address and subnet mask.

Configure the routing protocol in use on all other enterprise routers with the new

network information.

5 How does TCP ensure the reliable transfer of data?

if data segments are not received from the source, the destination requests that the

segments be resent.

If an acknowledgment of the transmitted segments is not received from the destination

in a predetermined amount of the time, the source resends the data.

** TCP uses the SYN-ACK portion of the three-way handshake to ensure that all data

has been received.

The TCP Protocol Interpreter process verifies the transmitted data at source and

destination.

6 A network administrator is asked to design a system to allow simultaneous access to

the Internet for 250 users. The ISP for this network can only supply five public IPs.

What can be used to accomplish this task?

routable translation

dynamic translation

static translation

** port address translation

7What is the most commonly used exterior routing protocol?

** BGP

RIP

OSPF

EIGRP

8 Refer to the exhibit. The network administrator needs to configure the router with a

name. Which command will the administrator use to configure the router name?

Router# ip hostname Boise

Router# enable hostname Boise

Router(config-line)# name Boise

** Router(config)# hostname Boise

Router(config)# ip hostname Boise

9Why are port numbers included in the TCP header of a segment?

to indicate the correct router interface that should be used to forward a segment


to identify which switch ports should receive or forward the segment

** to determine which Layer 3 protocol should be used to encapsulate the data

to enable a receiving host to forward the data to the appropriate application

to allow the receiving host to assemble the packet in the proper order

10What is the purpose of the routing process?

to encapsulate data that is used to communicate across a network

** to select the paths that are used to direct traffic to destination networks

to convert a URL name into an IP address

to provide secure Internet file transfer

to forward traffic on the basis of MAC addresses

11Which two statements are true about the use of the debug ip rip command on a

Cisco router? (Choose two.)

** The debug ip rip command displays RIP routing activity in real time.

**The debug ip rip command can be issued at the user EXEC configuration mode.

The debug ip rip command displays a combination of the information that is displayed

by the show ip route and show ip protocols commands.

Because of router processor usage, the debug ip rip command should be used only

when necessary.

The debug ip rip command should be used instead of the show ip route command

whenever possible.

12What minimum configurations must be set on a host to allow a request to be sent to

http://www.cisco.com/? (Choose four.)

**DNS server

WINS server

**IP address

NetBIOS

** subnet mask

** default gateway

13A Catalyst 2960 switch has been taken out of storage to be used as a temporary

replacement for another switch that needs to be repaired. About a minute after the

switch has started, the SYST LED on the front of the switch transitions from blinking

green to amber. What is the meaning of the amber SYST LED?

The switch has no configuration file in NVRAM.

** The switch has failed POST and must be sent for service.

The switch is functioning properly.

The switch is in half-duplex mode.

14Refer to the exhibit. Which combination of cables and symbols is correct?

A - crossover, B - straight-through, C - straight-through

http://www.cisco.com/


A - crossover, B - rollover, C - straight-through

**A - straight-through, B -crossover, C - straight-through

A - straight-through, B -straight-through, C - straight-through

A - straight-through, B - straight-through, C - crossover

A - rollover, B - straight-through, C - straight-through

15After an unsuccessful ping to the local router, the technician decides to investigate

the router. The technician observes that the lights and fan on the router are not

operational. In which layer of the OSI model is the problem most likely occurring?

transport

network

data link

** physical

16What are three characteristics of the TCP protocol? (Choose three.)

exchanges datagrams unreliably

is used to send IP error messages

forces the retransmission of unacknowledged packets

** creates a virtual session between end-user applications

**carries the IP address of the destination host in the TCP header

is responsible for breaking messages into segments and reassembling them at their

destination

17Refer to the exhibit. The network shown is connected using services from the same

ISP. How will the Fohi router dynamically learn routes to the 192.168.16.16/28,

192.168.16.32/28, and 192.168.16.64/28 subnetworks?

with BGP

**with a static route

with a directly connected route

with an interior routing protocol

18Refer to the exhibit. Which type of UTP cable should be used to connect Host A to

Switch1?

rollover

console

crossover

**straight-through

19When customers use credit cards to make purchases at a small business, a modem

is heard dialing a telephone number to transfer the transaction data to the central

office. What type of WAN serial connection is in use?

leased line

packet switched


** circuit switched

point-to-point

20 A user reports being unable to access the Internet. The help desk technician

employs a bottom-up approach to troubleshooting. The technician first has the user

check the patch cable connection from the PC to the wall, and then has the user verify

that the NIC has a green link light. What will the technician have the user do next?

Enter an IP address into the WWW browser address bar to see if DNS is at fault.

Use traceroute to identify the device along the path to the ISP that may be at fault.

** Verify the IP address, subnet, and gateway settings using ipconfig on the PC .

Connect to the user home router to check firewall settings for blocked TCP ports.

21 A ping 192.1.1.20 command is issued on workstation A to determine if

workstation B can be reached. What events will occur if this command is successful?

(Choose two.)

The router will block the ping request message.

The router will reply to the echo request with a proxy ping response.

Workstation A will send a UDP ping request message to workstation B.

Workstation B will send a UDP ping reply message to workstation A.

** Workstation A will send an ICMP echo request message to workstation B.

** Workstation B will send an ICMP echo reply message to workstation A.

22How does a router know of paths to destination networks? (Choose two.)

**inspection of the destination IP address in data packets

ARP requests from connected routers

manual configuration of routes

** updates from other routers

DHCP information broadcasts

updates from the SMTP management information base

23Refer to the exhibit. Which two statements describe the data conversation shown?

(Choose two.)

** The data conversation was started by the HTTP application process running on the

client.

The data conversation is identified by TCP port 80 on the client.

The user started the data conversation by sending an e-mail.

The IP address of the Internet server is 192.168.17.43 .

**The Internet server will send data to port 8547 on the client.

24What is one purpose of the TCP three-way handshake?

sending echo requests from the source to the destination host to establish the presence

of the destination

determining the IP address of the destination host in preparation for data transfer


requesting the destination to transfer a binary file to the source

**synchronizing sequence numbers between source and destination in preparation for

data transfer

25Which type of address is 192.168.17.111/28?

host address

network address

**broadcast address

multicast address

26A customer reports connectivity problems to an ISP technician. Upon questioning

the customer, the technician discovers that all network applications are functioning

except for FTP. What should the technician suspect is the problem?

** misconfigured firewall

bad port on switch or hub

misconfigured IP addressing on the customer's workstation

wrong DNS server configured on the customer's workstation

wrong default gateway configured on the customer's workstation

27The show ip route command was executed on one of the routers shown in the

graphic and the following output was displayed:

C 192.168.4.0/24 is directly connected, Serial0/0

R 192.168.5.0/24 [120/1] via 192.168.4.2, 00:00:19, Serial0/0

R 192.168.1.0/24 [120/2] via 192.168.3.1, 00:00:20, Serial0/1

R 192.168.2.0/24 [120/2] via 192.168.3.1, 00:00:20, Serial0/1

C 192.168.3.0/24 is directly connected, Serial0/1

From which router was this command executed?

A

B

C

D

28Refer to the exhibit. Which two sets of commands are required to configure

passwords for all management ports on a Catalyst 2960 switch? (Choose two.)

ALSwitch(config)# interface vlan 1

ALSwitch(config-if)# password cisco

ALSwitch(config-if)# login

**ALSwitch(config)# line vty 0 4

ALSwitch(config-line)# password cisco

ALSwitch(config-line)# login

ALSwitch(config)# line vty 0 15




ALSwitch(config)# enable secret class

ALSwitch(config)# enable password cisco

ALSwitch(config)# interface fa0/1

ALSwitch(config-if)# password cisco

ALSwitch(config-if)# no shutdown

**ALSwitch(config)# line cons 0



29A user reports being able to access the Internet but not being able to download e-

mail from the mail server at the ISP. What should the user check on the user

workstation?

** the POP3 and SMTP server settings in the e-mail application

the patch cable connections at the back of the workstation and at the wall plate

the DHCP settings in the operating system

the IP address, mask, and default gateway values

the NIC drivers

30Refer to the graphic. Which command will configure a static route on Router A to

direct traffic from LAN A that is destined for LAN C?

RouterA(config)# ip route 192.168.4.0 255.255.255.0 192.168.5.2


**RouterA(config)# ip route 192.168.5.0 255.255.255.0 192.168.3.2



31Which subnet masks could be used when subnetting a Class B IP address? (Choose

two.)

255.255.255.240

** 255.255.192.0

** 255.255.0.0

255.192.0.0

240.0.0.0

255.0.0.0

32 Refer to the exhibit. The network administrator has configured the RTA and RTB

interfaces. In order to allow hosts that are attached to RTA to reach the server that is

attached to RTB, a static route from RTA to the server LAN and a default route from

RTB back to RTA need to be configured. Which two commands will the

administrator use to accomplish these tasks on the two routers? (Choose two.)

**RTA(config)# ip route 10.16.10.5 255.255.255.252 10.16.10.6


RTA(config)# ip route 0.0.0.0 0.0.0.0 10.16.10.6

RTA(config)# ip route 10.16.10.96 255.255.255.252 10.16.10.6

RTB(config)# ip route 10.16.10.6 255.255.255.248 10.16.10.6

**RTB(config)# ip route 0.0.0.0 0.0.0.0 S0/0/1


33How do port filtering and access lists help provide network security?

**They prevent specified types of traffic from reaching specified network

destinations.

They alert network administrators to various type of denial of service attacks as they

occur.

They prevent viruses, worms, and Trojans from infecting host computers and servers.

They enable encryption and authentication of confidential data communications.

34 Refer to the exhibit. The network administrator of the building in the graphic needs

to choose the type of cable best suited to add ServerB to the network. Which cable

type is the best choice?

STP

UTP

coaxial

**fiber optic

35What is used by a routing protocol to determine the best path to include in the

routing table?

Convergence time

Default distance

** Metric

Type of router

36Refer to the exhibit. Which IP addresses could be assigned to the hosts in the

diagram? (Choose two.)

192.168.65.31

192.168.65.32

** 192.168.65.35

** 192.168.65.60

192.168.65.63

192.168.65.64

37Given the network 192.168.25.0 shown in the graphic, which subnet mask would

accommodate the number of hosts in each subnet?

255.255.0.0

255.255.224.0

255.255.255.0


** 255.255.255.224

255.255.255.240

255.255.255.248

38 Which two protocols allow network devices to report their status and events to a

centralized network management device? (Choose two.)

** Syslog

Telnet

HTTP

HTTPS

** SNMP

39What is true regarding the differences between NAT and PAT?

PAT uses the word "overload" at the end of the access-list statement to share a single

registered address.

Static NAT allows an unregistered address to map to multiple registered addresses.

Dynamic NAT allows hosts to receive the same global address each time external

access is required.

**PAT uses unique source port numbers to distinguish between translations.

40Refer to the exhibit. The graphic shows the output of a command issued on router

RTB. According to the output, what two statements are true of router RTB? (Choose

two.)

**The router is connected to a router named Boise.

Router RTB is connected to a Cisco 1841 router.

Router RTB is directly connected to two other routers.

**The IP address of the router interface connected to router RTB is 192.168.2.6 .

The RTB router is connected to two Cisco devices by Fast Ethernet links.

41Refer to the exhibit. The network administrator uses the command below to

configure a default route to the ISP network :


A ping issued from the ISP is successful to router RTB. However, ping echo request

packets arrive at a host that is attached to the Fa0/0 interface of RTB, and the replies

do not make it back to the ISP router. What will fix this problem?

The ISP must be configured to forward packets from the 192.168.1.0 network.

**The ip route command needs to be edited so that the next hop address is 10.1.1.5.

The ip route command needs to be edited so that the 192.168.1.1 address is the next

hop address.

The ip route command should be removed from the RTB router configuration.

42 A network technician is using a network management station to gather data about

the performance of devices and links within the ISP. Which application layer protocol

makes this possible?


**SNMP

FTP

DHCP

SMTP

43What are two purposes of DNS? (Choose two.)

to dynamically assign IP addressing information to network hosts

to simplify the administration of host and default gateway addressing on client

computers

to assign TCP port numbers to hosts as part of the data transfer process

**to resolve human-readable domain names to numeric IP addresses

**to replace the static HOSTS file with a more practical dynamic system

44A hacker attempts to reach confidential information that is stored on a server inside

the corporate network. A network security solution inspects the entire packet,

determines that it is a threat, and blocks the packet from entering the inside network.

Which security measure protected the network?

an IDS

**an IPS

a host-based firewall

Anti-X software

45 How many host addresses may be assigned on each subnetwork when using the

130.68.0.0 network address with a subnet mask of 255.255.248.0?

30

256

**2046

2048

4094

4096

46In an IPv4 environment, what information is used by the router to forward data

packets from one interface of a router to another?

**destination network address

source network address

source MAC address

well known port destination address

47 A small tire retailer requires a low-cost WAN connection to its headquarters in

order to manage its inventory and process customer sales in real time. Which WAN

connection type is best suited to its needs?

Sonet


T3

**dialup

DSL

leased line

48The command copy tftp running-config has been entered on the router. What will

this command do?

copy the configuration in RAM to a server

**copy the configuration file from a server to RAM

copy the configuration file in NVRAM to RAM

copy the configuration file in NVRAM to a server

copy the configuration file from a server to NVRAM

49Refer to the exhibit. The network administrator needs to configure the Fa0/0

interface of RTB so that hosts from RTA can connect to the server that is attached to

RTB. Which two commands will the administrator use to accomplish this task?

(Choose two.)

RTB# ip address 192.168.102.98 255.255.255.248

RTB(config-if)# ip address 192.168.102.99 255.255.255.252

RTB(config)# ip address 192.168.102.97 255.255.255.252

RTB(config)# no shutdown

**RTB(config-if)# no shutdown

**RTB(config-if)# ip address 192.168.102.97 255.255.255.252

50Refer to the exhibit. A NOC technician at an ISP enters the command shown. What

are two reasons to use this command? (Choose two.)

to map the path to 192.168.1.7

**to test reachability to 192.168.1.7

to locate connectivity problems along the route to 192.168.1.7

to identify the ISPs that interconnect the NOC with the remote host with the address

192.168.1.7

**to measure the time that packets take to reach 192.168.1.7 and return to the

technician's workstation

CCNA 2 Final V4.1 Answers

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