Cisco Systems 2 manual Answer E, What are the characteristics of UDP?

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A, B, and D are incorrect; they do not provide a maximum of 126 hosts.

Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 233-236.

Q. 137

In Cisco IOS software, which command displays the backup configuration?

A.show flash

B.show version

C.show tftp-config

D.show backup-config

E.show startup-config

Answer: E

Explanation: This shows the startup configuration in NVRAM, which is the backup for the running configuration that runs in RAM.

Incorrect Answers:

A is incorrect; show flash command lists the contents of the flash showing the IOS images that are stored. Remember, the backup configuration is in the NVRAM, not Flash nor RAM.

B is incorrect; this command shows information on the running configuration. C is incorrect; this is not a valid command.

C is incorrect; this is not a valid command.

Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 98-99, 131.

Q. 138

What are the characteristics of UDP?

A.It is reliable and acknowledged

B.It is unreliable and acknowledged

C.It is reliable and unacknowledged

D.It is unreliable and unacknowledged

Answer: D

Explanation: UDP is connectionless and unacknowledged protocol. Although UDP is responsible for transmitting messages, no checking for segment delivery is provided at this layer. UDP depends on upper-layer protocols for reliability.

Incorrect Answers:

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