CCNA2 - Module 4 Exam Answers （05/08/2008 14:30）

1 、 A network administrator was called away from the terminal while using Telnet to monitor a remote router. The Telnet session was left connected. If the default Telnet configuration is used, what will the administrator find upon returning 15 minutes later?

• The Telnet session entered a "sleep" state and will resume when the spacebar is pressed.

• The Telnet session remained connected and is on the same screen it was left on.

• The Telnet session suspended itself and will resume when the Enter key is pressed.

• The Telnet session terminated itself after 10 minutes of inactivity.

• The Telnet session remained active but now requires the password to be entered again.

2

What is the main use of Telnet?

• transfer of data between end users

• verification of simple connectivity

• routing of data packets

• remote connection to network devices

3、

Which of the following is true regarding CDP and the graphic shown?

• CDP running on Router D will gather information about routers A, B, C, and E.

• By default, Router A will receive CDP advertisements from routers B and C.

• If routers D and E are running different routing protocols, they will not exchange CDP information.

• Router E can use CDP to identify the IOS running on Router B.

4 Which of the following are displayed by the Router# show cdp neighbors command? (Choose three.)

• load

• platform

• reliability

• holdtime

• local interface

5

To obtain CDP information from a Cisco router that is not directly connected to the administrator's console, what must happen?

• The source router must send TLV blocks to the remote router.

• The administrator can Telnet to a Cisco device that is connected to the remote router.

• The administrator needs to issue the Router# show cdp all to view the entire network CDP advertisements.

• The administrator must transmit TTL packets to the remote device and wait for a response.

6

What is the purpose of the cdp timer command?

• specifies the hold time to be sent in the CDP update packet

• resets the traffic counters back to zero

• specifies how often the Cisco IOS software sends CDP updates

• deletes and resets the CDP table of information about neighbors

7

An administrator is attempting to enable CDP on the interface of a Cisco router. After issuing the command Router(config-if)# cdp enable, the router responds with an error stating that CDP is not active. What might be the problem?

• The cdp enable command must be issued from the global mode prompt.

• The administrator needed to issue the command Router(config-if)# cdp run.

• CDP has not been configured globally.

• The administrator did not manually enter the CDP neighbors into the CDP table.

8、

The traceroute command was used to trace the path between routers A and D. What would an output display of three asterisks (***) indicate?

• The command was issued from the wrong prompt.

• Each datagram was successfully sent.

• One of the routers is unreachable.

• There are three hops between source and destination.

9

Pings between Atlanta and Dallas are successful. If a hostname table or DNS connection is not available, which command will successfully establish a remote connection from Atlanta to

Dallas

via Telnet?

• Atlanta> connect Dallas

• Atlanta> 197.72.3.2

• Atlanta# 206.157.85.1

• Atlanta# telnet Dallas

10

How many Telnet sessions can take place simultaneously on a router running a standard edition of the IOS?

• 4

• 5

• 8

• 10

11

Why would an administrator use the Telnet application when troubleshooting a network? (Choose three.) • It can be used to verify the operation of application layer software between the source and destination.

• Telnet can use the ICMP protocol to verify a hardware connection and network layer address.

• It is the most complete testing mechanism available.

• Remote networks may be accessed via a Telnet session for troubleshooting.

• Time to Live values are used by Telnet to identify a failure of device between source and destination.

12

For which three network layer protocols does CDP provide information? (Choose three.)

• IP

• RIP

• SNMP

• AppleTalk

• IPX

• EIGRP

13、

If the network administrator establishes a telnet session from Workstation 2 to GAD and then from GAD to BHM, what occurs if the session with BHM is suspended and the Enter key is pressed?

• The GAD session will be resumed.

• The BHM session will be resumed.

• The GAD session will be terminated.

• The BHM session will be terminated.

14

Transmitting type length values (TLVs) inside advertisements is a process used by CDP to provide information about neighboring devices. What information is displayed by these TLVs? (Choose three.)

• interface information of the connected device

• all networks connected to the neighboring device

• name of the connected device

• routing protocol used on the neighboring device

• holdtime for advertisements

15、

Which command will produce the output shown in the graphic? • show cdp

• show cdp neighbors

• show cdp neighbors detail

• show cdp detail

• show cdp traffic

16

What key sequence is used to suspend a Telnet session on a remote router?

• Ctrl-Shift-S

• Ctrl-Shift-6

• Ctrl-Shift-6, then x

• Ctrl-Alt-S

• Ctrl-Alt-6

• Ctrl-Alt-6, then x

17 What command enables CDP on the interface of a router? • Router(config-if)# cdp enable

• Router(config-if)# cdp run

• Router(config-if)# cdp start

• Router(config-if)# cdp config

18

How can a network administrator logged in to RTA gather information about the Cisco devices that are directly connected to its neighbor, RTB?

• Use the show cdp neighbors detail command on RTA to view information about every device on the entire internetwork.

• Use ping to determine the status of RTB, then issue the show cdp neighbors detail command.

• Use Telnet to connect to RTB, then issue the show cdp neighbors command.

• Use traceroute to establish the pathway to RTB, then issue the show cdp neighbors command.