[多选题]CDP is being used throughout the Ezonexam network. What are two reasons why the Ezonexam network administrator would use CDP? (Choose two)

正确答案 ：BD

To obtain the IP Address of a connected device in order to telnet to the device

To verify Layer 2 connectivity between two devices when Layer 3 fails

[单选题]路由器“全局模式”的提示符为（）

正确答案 ：C

(config)

[单选题]帧中继环境中，CIR的含义是（）

正确答案 ：B

保证线路速率

[单选题]为了连接“帧中继”线路，网络中的路由器需要提供的端口类型为（）

正确答案 ：B

Serial

[单选题]路由表中，某条路由的“路由代码为D”，则表明该路由为（）

正确答案 ：D

EIGRP路由

[单选题]路由器上，清空路由表的命令是（）

正确答案 ：D

clearip route*

[多选题]The LAN needs are expanding at the Ezonexam corporate office, which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the Ezonexam network.Which of the following are layer 1 devices that you can use? (Choose all that apply.)

正确答案 ：DE

A hub

A repeater

解析：解析：Explanation:

[多选题]What are two characteristics of "store and forward" switching? (Select two answer choices)

正确答案 ：BC

The switch receives the complete frame. before beginning to forward it.

Latency through the switch varies with frame. length.

解析：解析：Explanation:

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