Cisco Introduction to Cisco Networking Technologies - 640-821 FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

Refer to the graphic. What is the purpose of the two numbers shown following the exec- timeout command?

A. If connected to the router by Telnet, input must be detected within one hour and 55 seconds or the connection will be closed. B. If connected to the router by Telnet, input must be detected within one minute and 55 seconds or the connection will be closed. C. If no commands have been typed in 55 seconds, the console connection will be closed. D. If no commands have been typed in one minute and 55 seconds, the console connection will be closed. E. If no router activity has been detected in one hour and 55 minutes, the console will be locked out.

Discussion 0

Correct Answer: D Vote an answer

Question 2

How does a switch differ from a hub?

A. A switch tracks MAC addresses of directly-connected devices. B. A switch decreases the number of broadcast domains. C. A switch decreases the number of collision domains. D. A switch operates at a lower, more efficient layer of the OSI model. E. A switch does not induce any latency into the frame transfer time.

Discussion 0

Correct Answer: A Vote an answer

Question 3

What set of router configuration commands causes the message shown in the exhibit?

A. router(config)# line console 0
router(config-line)# enable password cisco
router(config-line)# logging synchronous B. router(config)# line console 0
router(config-line)# enable password cisco
router(config-line)# login C. router(config)# line console 0
router(config-line)# enable secret cisco
router(config-line)# login D. router(config)# line console 0
router(config-line)# service password-encryption
router(config-line)# login E. router(config)# line console 0
router(config-line)# password cisco
router(config-line)# login

Discussion 0

Correct Answer: E Vote an answer

Question 4

Refer to the exhibit. HostB is sending a file to HostA. B represents the frame as it leaves the Oshawa router. What is the Layer 2 destination address of the frame at this point?

A. abcd.2246.0035 B. abcd.1123.0045 C. abcd.4444.0012 D. abcd.1234.5678 E. aabb.5555.2222

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Correct Answer: C Vote an answer

Question 5

Refer to the graphic. A network associate is planning to copy a new IOS image into the
Paden router. This new image requires 8 MB of flash memory and 32 MB of RAM. How will the IOS proceed with the copy process?

A. During the copy process, the current IOS image will be erased. B. The new IOS will be copied into flash memory and the current image will remain. C. IOS will issue an error message because flash memory is not large enough to hold the new image. D. The current IOS image must be manually erased before IOS will allow the new image to be copied.

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Correct Answer: B Vote an answer

Question 6

Which IOS user EXEC command will allow a network technician to determine which router in the path to an unreachable network host should be examined more closely for the cause of the network failure?

A. Router> show cdp neighbors B. Router> ping C. Router> show ip route D. Router> show interface E. Router> trace F. Router> telnet

Discussion 0

Correct Answer: E Vote an answer

Question 7

A network administrator is connecting PC hosts A and B directly through their Ethernet interfaces as shown in the graphic. Ping attempts between the hosts are unsuccessful.
What can be done to provide connectivity between the hosts? (Choose two.)

A. The subnet masks should be set to 255.255.255.192. B. A crossover cable should be used in place of the straight-through cable. C. A default gateway needs to be set on each host. D. The hosts must be reconfigured to use private IP addresses for direct connections of this type. E. The subnet masks should be set to 255.255.255.0. F. A rollover cable should be used in place of the straight-through cable

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Correct Answer: B,E Vote an answer

Question 8

Which command displays the status of the network layer protocols active on a router?

A. show version B. show flash C. show network protocols D. show protocols E. show stacks

Discussion 0

Correct Answer: D Vote an answer

Question 9

DRAG DROP
drag drop

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Correct Answer:

Question 10

What is the subnet address of 172.16.159.159/22?

A. 172.16.156.0 B. 172.16.159.128 C. 172.16.0.0 D. 172.16.159.0 E. 172.16.192.0 F. 172.16.128.0

Discussion 0

Correct Answer: A Vote an answer