CCENT Practice Certification Exam # 2

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Take Assessment - CCENT Practice Certification Exam # 2 - CCNA Exploration: Accessing the WAN (Version 4.0)

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Refer to the exhibit. How many collision domains exist in the exhibited network?1236

http://assessment.netacad.net/virtuoso/delivery/pub-doc/exam.shtml

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What are three characteristics of CSMA/CD? (Choose three.)Devices can be configured with a higher transmission priority.A jam signal indicates that the collision has cleared and the media is not busy.A device listens and waits until the media is not busy before transmitting.The device with the electronic token is the only one that can transmit after a collision.All of the devices on a segment see data that passes on the network medium.After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired

3 Top of FormWhich group of commands allows a router to be administered remotely?

line con 0password classlogininterface fa0/1ip address 192.168.10.1 255.255.255.0access-class 1 inline vty 0 4password ciscologininterface vlan 1ip address 192.168.10.1 255.255.255.0no shutdown

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Refer to the exhibit. The network shown is using classful subnetting. The serial link between routers A and B is configured with addresses from the 172.16.6.0/23 subnet. How many valid IP addresses are wasted on this subnetwork?

252254256508510512




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Refer to the exhibit. From router R1, the command telnet 192.168.11.2 is entered from privileged mode and this message displays:

00:06:45: %SYS-5-CONFIG_I: Configured from console by console 192.168.11.2Trying 192.168.11.2 . . . Open

Password required, but none set

If the R2 interfaces are in the status shown in the exhibit, what is the most likely problem?The enable secret command is missing from R2.The enable password command is missing from R1.The login command is missing from the line configuration mode on R2.The password command is missing from the line configuration mode on R2.The login command is missing from the console mode on R2.The no shutdown command is missing from the Serial 0/0 interface mode on R1.

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Refer to the exhibit. The router that is named myhome has received a frame from the host 192.168.254.7. The contents of this frame are being sent to host 172.16.14.243. What is the Layer 2 destination address of the frame as it leaves the myhome router?

0008.a3b6.ce050009.1281.18a8


000a.8a47.e612172.16.14.129172.16.14.243192.168.254.7

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9 Top of FormWhat type of address is 172.16.134.64 with the subnet mask 255.255.255.224?

This is a usable host address.This is a broadcast address.



This is a network address.This is an Internet-routable address.

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When would you want to use the switchport port-security mac-address sticky command?whenever you need to protect an unused switch portwhenever you want the port to only allow a single host device to connectwhenever you need the port to recognize the statically assigned MAC address in the MAC address tablewhenever multiple devices share the same port

11 Top of FormWhich two items can be modified by the system administrator to determine from where the Cisco IOS loads? (Choose two.)

system ROMstartup configuration filesystem image fileconfiguration register valuebootloader image file

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Data is being sent from a source PC to a destination server. Which three statements correctly describe the function of TCP or UDP in this situation? (Choose three.)

The UDP destination port number identifies the application or service on the server which will handle the data. TCP is the preferred protocol when a function requires lower network overhead. UDP segments are encapsulated within IP packets for transport across the network.The source port field identifies the running application or service that will handle data returning to the PC.The TCP source port number identifies the sending host on the network. The TCP process running on the PC randomly selects the destination port when establishing a session with the server.

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Refer to the exhibit. What would be a valid network address for the new subnet on RTA?





10.16.10.16/2810.16.10.24/2810.16.10.30/2810.16.10.56/2810.16.10.72/28

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Refer to the exhibit. Switch1 has only the following commands added to a default Cisco 2960 configuration:

enable secret ciscoline vty 0 4password Kn0ckkn-cKlogininterface vlan 1ip address 10.0.1.8 255.255.255.0no shutdown

Assume that routing between networks is functioning properly and that Switch2 has been properly configured for remote access. What would the result be if the telnet 10.0.2.2 command is issued from Switch1 privileged mode?

The following prompt would appear:User Access VerificationPassword:Switch2 would return a destination unreachable message to Switch1.Router1 would return a destination unreachable message to Switch1.The packet would be dropped.

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When configuring a switch to use SSH for virtual terminal connections, what is the purpose of the crypto key generate rsa command?

show SSH connected hostsdisconnect SSH connected hostscreate a public and private key pairshow active SSH ports on the switchaccess the SSH database configuration

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16 Top of FormWhich technology is primarily used for security in a wireless network environment?

SSHWPASSIDCSMA/CACSMA/CD

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17 Which two statements describe the command ip route 192.168.7.24 255.255.255.248 192.168.7.9? (Choose two.)

A packet that is destined for host 192.168.7.30 will be forwarded to address 192.168.7.9.The address 192.168.7.9 is the destination network for this route.The address 192.168.7.24 is the next-hop router in this command.This command is issued from the interface configuration mode.This command is used to define a static route.

18 Top of FormThe router reads each bit to determine the class of an address. Which three series of binary numbers would the router identify as public Class C addresses? (Choose three.)

10101100.00100000.00010001.0001011111000110.10000101.11011011.01010111 11010001.10100101.11001000.11101101 11000000.10101000.00100000.01000000 11000000.00011111.00000111.10111011

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Refer to the exhibit. Considering the information that follows and the exhibit, where is the data flowing?

Source IP address: 192.168.1.88Destination IP address: 209.165.200.225Source MAC address: 00-11-12-7a-41-10Destination MAC address: 00-0d-cc-f4-ad-2cSource Port: 1464Destination Port: 23

A – from laptop to access pointB – from access point to attached switch




C – from host to default gateway routerD – from router to ISP

20 Top of FormWhy is the ip host command used to create host tables on Cisco routers?

to create static routes to specific hoststo allow communication with other IP devices by nameto provide a meaningful name for the local routerto identify only the directly attached networks and associated hoststo define the host devices with which the router is allowed to connect

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Refer to the exhibit. If Host 1 were to transfer a file to the server, what layers of the TCP/IP model would be used?

only application and Internet layersonly Internet and network access layersonly application, Internet, and network access layersapplication, transport, Internet, and network access layersonly application, transport, network, data link, and physical layersapplication, session, transport, network, data link, and physical layers

22 Top of FormABC company needs to connect its router to an ISP to access the Internet. What device is needed to connect the router to the ISP if the ISP supplies a T1 leased line for the connection?

CSU/DSUmodemDSL routerNT1 deviceISDN modem




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A network administrator wants to configure a Cisco 2960 switch so that access to each switch port is limited to one MAC address. What will accomplish the administrator’s objective?

Cisco Discovery Protocolport securityInternet Control Message Protocolaccess listsflow control

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Refer to the exhibit. A switch with a default configuration connects four hosts. The ARP table for host A is shown. What happens when host A wants to send an IP packet to host D?

Host A sends an ARP request to the MAC address of host D.Host D sends an ARP request to host A.Host A sends out the packet to the switch. The switch sends the packet only to the host D, which in turn responds.Host A sends out a broadcast of FF:FF:FF:FF:FF:FF. Every other host connected to the switch receives the broadcast and host D responds with its MAC address.

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Why is it important for the router to maintain an accurate routing table?to provide Layer 2 addressing information for the next hopto prevent broadcasts from occurring on the LANto determine the best path to the destination networkto identify all of the routers in a network

26 Top of FormWhat are three valid host addresses given a subnet mask of 255.255.254.0? (Choose three.)

64.100.2.255





172.55.33.25564.104.129.0192.168.162.25510.165.55.255128.107.62.0

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Refer to the exhibit. If Host 1 needs to request its IP address from the server, what protocol would be used to process that request?

CSMA/CDCSMA/CADHCPICMPNATFTP

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Refer to the exhibit. Based on the exhibited router output, what two conclusions can be made? (Choose two.)The enable password has been encrypted.The service password-encryption command has not been added to the configuration.The passwords that are shown restrict access to the router console.The password that will gain access to privileged mode is sys#op.The passwords that are shown will be required to enter privileged EXEC mode on this router.



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What are two requirements for establishing a console communication session between a computer and a router? (Choose two.)

A console cable must be used from the console port of the router to the NIC of the computer.A rollover cable must be used from the console port of the router to the serial port of the computer.A default gateway must be configured on the computer.The IP addresses assigned to the router and computer must be on the same subnetwork.There must be a terminal emulator application on the computer.

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Refer to the exhibit. Which two statements are true of the output shown? (Choose two.)The protocol that communicated this information operates at Layer 3 of the OSI model.The output of this command displays information about directly connected Cisco devices only.The switch is attached to the SanJose1 FastEthernet0/21 interface.SanJose1 is running CDP version 12.0. SanJose1 has two fully operational, CDP-enabled Cisco switches directly connected to it.SanJose2 is a 2600 series router running several routed protocols.



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31 Top of FormIn what two situations would UDP be the preferred transport protocol over TCP? (Choose two.)

when applications need to guarantee that a packet arrives intact, in sequence, and unduplicatedwhen a faster delivery mechanism is needed


when delivery overhead is not an issuewhen applications do not need to guarantee delivery of the datawhen destination port numbers are dynamic

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Refer to the exhibit. A small business has asked for advice about what type of cable will be needed to connect their modular routers. What type of connector is used by each device that is shown?

WIC-2T is a DB60 connector, WIC1T is a Smart Serial connector, and WIC-1ENET is an RJ45 connector. WIC-2T is an RJ45 connector, WIC1T is a DB60 connector, and WIC-1ENET is a Smart Serial connector. WIC-2T is a DB60 connector, WIC1T is a Smart Serial connector, and WIC-1ENET is an RJ45 connector. WIC-2T is a Token Ring connector, WIC1T is a DB25 connector, and WIC-1ENET is an RJ11 connector. WIC-2T is a Smart Serial connector, WIC1T is a DB60 connector, and WIC-1ENET is an RJ45 connector

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What type of cable is used for connectivity between a model 2620 router and a model 2950 switch (point A), a model 2950 switch and a model 1900 switch (point B), and a model 2950 switch and a host (point C)?



A – straight-through; B – rollover; C – straight-throughA – crossover; B – straight-through; C – straight-throughA – straight-through; B – straight-through; C – crossoverA – crossover; B – straight-through; C – crossoverA – straight-through; B – crossover; C – straight-throughA – straight-through; B – crossover; C – crossover

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35 Top of FormWhich three statements are true about full-duplex operation on an Ethernet network? (Choose three.)



There are no collisions in full-duplex mode.A dedicated switch port is required for each node.Hub ports are preconfigured for full-duplex mode.The host network card must detect the availability of the media before transmitting.The host network card and the switch port must both be in full-duplex mode.

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Refer to the exhibit. Four hosts are being added to the 172.16.112.0 network. Which IP address is invalidhost address for this network?

172.16.113.55172.16.112.255172.16.127.255172.16.112.89172.16.120.96

37 Top of FormWhich three addresses are valid public addresses? (Choose three.)

198.133.219.17192.168.1.24510.15.250.5128.107.12.117192.15.301.24064.104.78.227

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What are two actions performed by a Cisco switch? (Choose two.)building a routing table that is based on the first IP address in the frame headerusing the source MAC addresses of frames to build and maintain a MAC address tableforwarding frames with unknown destination IP addresses to the default gatewayutilizing the MAC address table to forward frames via the destination MAC addressexamining the destination MAC address to add new entries to the MAC address table

39 Top of FormWhat three services are provided by the transport layer? (Choose three.)

flow controlencryption of datapath determination





connection establishmenterror recoverybit transmissiondata representation

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Which layer of the OSI model handles the process of identifying and discarding damaged frames?presentationsessiontransportnetworkdata linkphysical

41 Top of FormA wireless network has one access point installed. Users at some locations in the office complain that their wireless access is slow, while others say that the wireless network performance is fine. What should be done to remedy this situation?

Replace the access point.Install another access point at another location within the office.Upgrade the wireless NICs in the hosts that are slow.Limit the number of wireless hosts that attach to the access point at one time.Convert back to a wired network.

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What would be a common reason to upgrade from RIPv1 to RIPv2?RIPv2 takes less router memory than RIPv1 takes.RIPv2 supports a larger network (more routers) than RIPv1 supports.RIPv2 supports discontiguous networks and RIPv1 does not.RIPv2 supports classless routing. RIPv1 is classful.

43 Top of FormWhat is the outcome when a wireless host has a different SSID configured than the access point to which it is attempting to connect?

The access point will send the host a rejection message.The host will be prompted for a userid and password.The access point will send the host a challenge message.The host will only be allowed access to the Internet.The access point will send the host a re-authentication request message.The host will not be allowed access to the wireless network.

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Refer to the exhibit. Which two interfaces could be used for a leased-line WAN connection? (Choose two.)ABCDEF

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Refer to the exhibit. Workstation A sends an IP packet to workstation B. Which two statements describe the encapsulation of the packet as it passes through the network?

The Layer 2 header is stripped from the packet by each router.The destination Layer 2 address of the packet does not change.The source Layer 3 address of the packet changes at each router.The Layer 2 header changes at each router.The Layer 3 header is stripped from the packet by each router.

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Refer to the exhibit. Which IP address can be assigned to the default gateway for host A?10.184.0.110.192.0.010.199.255.25410.200.255.254

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Given a host with the IP address 192.168.65.54 and a subnet mask of 255.255.255.240, to which network does the host belong?

192.168.65.16192.168.65.32192.168.65.48192.168.65.64

48 Top of FormWhich technology is primarily used in a WAN?

ARPCDPPPPWEPCSMA/CD

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Refer to the exhibit. Using PAT, RouterA is configured to translate all private inside addresses to a single public address. The network administrator wants to determine which port number is being used in the translation of the ComputerA inside private IP address. Which command could be used if the administrator sits at ComputerA but is not allowed remote access to RouterA?

ipconfig /alltraceroutenetstattracert

50 Top of FormWhich protocol is described as an enhanced distance vector routing protocol?

RIP v1RIP v2EIGRPOSPF

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CCENT Practice Certification Exam # 2

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