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Cisco CCNA 640-802试题(61-65)

2007-12-24 11:17 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(61-65)试题及答案。

AD:

61. There are no boot system commands in a router configuration in NVRAM. What is the fallback sequence that  the router will use to find an IOS during reload?

A. TFTP server, Flash, NVRAM
B. ROM, NVRAM, TFTP server
C. NVRAM, TFTP server, ROM
D. Flash, TFTP server, ROM
E. Flash, NVRAM, ROM
Answer: D


62. Refer to the exhibit. What is the meaning of the output MTU 1500 bytes?

AA. The maximum number of bytes that can traverse this interface per second is 1500.
B. The minimum segment size that can traverse this interface is 1500 bytes.
C. The maximum segment size that can traverse this interface is 1500 bytes.
D. The minimum packet size that can traverse this interface is 1500 bytes.
E. The maximum packet size that can traverse this interface is 1500 bytes.
F. The maximum frame size that can traverse this interface is 1500 bytes.  

Answer: E

63. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched
LAN?
A. during high traffic periods
B. after broken links are re-established
C. when upper-layer protocols require high reliability
D. in an improperly implemented redundant topology
E. when a dual ring topology is in use

Answer: D

64. IP addresses and routing for the network are configured as shown in the exhibit. The network administrator
issues the show ip eigrp neighbors command from Router1 and receives the output shown below the topology.
Which statement is true?


A. It is normal for Router1 to show one active neighbor at a time to prevent routing loops.
B. Routing is not completely configured on Router3.
C. The IP addresses are not configured properly on the Router1 and Router3 interfaces.
D. The no auto-summary command configured on the routers prevents Router1 and Router2 from forming a
neighbor relationship.

Answer: B

65. Which of the following describe private IP addresses? (Choose two.)

A. addresses chosen by a company to communicate with the Internet
B. addresses that cannot be routed through the public Internet
C. addresses that can be routed through the public Internet
D. a scheme to conserve public addresses
E. addresses licensed to enterprises or ISPs by an Internet registry organization

Answer: BD

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