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Cisco CCNA 640-802试题(121-125)

2008-07-14 12:01 佚名 51cto.com 字号:T | T
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本文内容为Cisco CCNA认证考试640-802(121-125)试题及答案。

AD:

121. Refer to the exhibit. The network administrator is in a campus building distant from Building B. WANRouteris hosting a newly installed WAN link on interface S0/0. The new link is not functioning and the administratorneeds to determine if the correct cable has been attached to the S0/0 interface. How can the administratoraccurately verify the correct cable type on S0/0 in the most efficient manner?

 

A. Telnet to WANRouter and execute the command show interfaces S0/0

B. Telnet to WANRouter and execute the command show processes S0/0

C. Telnet to WANRouter and execute the command show running-configuration

D. Telnet to WANRouter and execute the command show controller S0/0

E. Physically examine the cable between WANRouter S0/0 and the DCE.

F. Establish a console session on WANRouter and execute the command show interfaces S0/0

Answer: D


122. The OSPF Hello protocol performs which of the following tasks? (Choose two.)

A. It provides dynamic neighbor discovery.

B. It detects unreachable neighbors in 90 second intervals.

C. It maintains neighbor relationships.

D. It negotiates correctness parameters between neighboring interfaces.

E. It uses timers to elect the router with the fastest links as the designated router.

F. It broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF.

Answer: AC


123. An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports21, 23 and 25. What types of packets will be permitted by this ACL? (Choose three.)

A. FTP

B. Telnet

C. SMTP

D. DNS

E. HTTP

F. POP3

Answer: DEF

 

124. Refer to the exhibit. What IP address should be assigned to Workstation A?

 

A. 192.168.1.143/28

B. 192.168.1.144/28

C. 192.168.1.145/28

D. 192.168.1.159/28

E. 192.168.1.160/28

Answer: C

TestInside    640-802


125. Refer to the exhibit. Which address and mask combination represents a summary of the routes learned by EIGRP?

 


A. 192.168.25.0 255.255.255.240

B. 192.168.25.0 255.255.255.252

C. 192.168.25.16 255.255.255.240

D. 192.168.25.16 255.255.255.252

E. 192.168.25.28 255.255.255.240

F. 192.168.25.28 255.255.255.252

Answer: C

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