640-802（最新184道分享）

shijunhua618

640-802（最新184道分享）

1. Refer to the exhibit. What could be possible causes for the "Serial0/0 is down" interface status?

(Choose two.)

A. A Layer 1 problem exists.

B. The bandwidth is set too low.

C. A protocol mismatch exists.

D. An incorrect cable is being used.

E. There is an incorrect IP address on the Serial 0/0 interface.

Answer: AD

2. The network administrator has discovered that the power supply has failed on a switch in the company

LAN and that the switch has stopped functioning. It has been replaced with a Cisco Catalyst 2950 series

switch. What must be done to ensure that this new switch becomes the root bridge on the network?

A. Lower the bridge priority number.

B. Change the MAC address of the switch.

C. Increase the VTP revision number for the domain.

D. Lower the root path cost on the switch ports.

E. Assign the switch an IP address with the lowest value.

Answer: A

3. Refer to the exhibit. Assume that all of the router interfaces are operational and configured correctly.

How will router R2 be affected by the configuration of R1 that is shown in the exhibit?

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A. Router R2 will not form a neighbor relationship with R1.

B. Router R2 will obtain a full routing table, including a default route, from R1.

C. R2 will obtain OSPF updates from R1, but will not obtain a default route from R1.

D. R2 will not have a route for the directly connected serial network, but all other directly connected

networks will be present, as well as the two Ethernet networks connected to R1.

Answer: A

4. Before installing a new, upgraded version of the IOS, what should be checked on the router, and which

command should be used to gather this information? (Choose two.)

A. the amount of available ROM

B. the amount of available flash and RAM memory

C. the version of the bootstrap software present on the router

D. show version

E. show processes

F. show running-config

Answer: BD

5. Which three IP addresses can be assigned to hosts if the subnet mask is /27 and subnet zero is usable?

(Choose three.)

A. 10.15.32.17

B. 17.15.66.128

C. 66.55.128.1

D. 135.1.64.34

E. 129.33.192.192

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F. 192.168.5.63

Answer: ACD

6. Refer to the exhibit. After HostA pings HostB, which entry will be in the ARP cache of HostA to support

this transmission?

A.

B.

C.

D.

E.

F.

Answer: D

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