ccna interview questions and answers

Part - 7 CCNA Interview Questions and Answers

31 Routers can learn about destinations through static routes, default, or dynamic routing. By default, a router will use information derived from __________.

• A. IGRP

• B. RIP

• C. IP

• D. TCP

Ans A

The quality of information is rated:

• Connected interface 0

• Static route 1

• IGRP 100

• RIP 120

• Unknown 255

The lower the value, the more reliable the source with 255 signifying information that the router will ignore. So, the router will use IGRP, rated at 100, before RIP, rated at 120.

32 You are logged into a router, what command would show you the IP addresses of routers connected to you?

• A. show cdp neighbors detail

• B. show run

• C. show neighbors

• D. show cdp

Ans A

33 As a system administrator, you perform an extended ping at the privileged EXEC prompt. As part of the display, you see "Set DF bit in IP header? [yes] :" What would happen if you answered no at the prompt.

• A. This lets the router fragment the packet.

• B. It tells the router not to fragment the packet.

• C. This lets the router direct the packet to the destination it finds in its routing table.

• D. It tell the router to send the packet to the next hop router

Ans A

"Set DF bit in IP header?" is a response to an extended ping at the router. If you answer
yes (the default) the router will not fragment the packet. If you answer no, the router will fragment the packet.

34 You have typed "ping" 172.16.101.1 and get the following display: Type escape sequence to abort. Sending 5, 100-byte ICMP Echoes to 172.16.101.1, timeout is 2 seconds:
.!!!!

What does the "." signify?

• A. That one message timed out.

• B. That all messages were successful.

• C. That one message was successful.

• D. That one message completed in under the allotted timeframe.

Ans A

The possible responses from the ping command are: ! Successful receipt of an echo reply. Timed out waiting for a reply U Destination unreachable C Congestion-experienced packet I Ping interrupted ? Packet type unknown & Packet TTL exceeded

35 Which command, that is used to test address configuration, uses Time-To-Live (TTL) values to generate messages from each router.

• A. trace

• B. ping

• C. telnet

• D. bootp

Ans: A

The Cisco IOS EXEC command "trace [protocol] [destination]" is used to discover routes that packets will travel to their destination hosts. Trace uses TTL (Time to Live) values to report destination route information.