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

题目：CDP is being used throughout the Ezonexam network. What are two reasons why the Ezonexam network administrator would use CDP? (Choose two)

解析：B,D

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举一反三的答案和解析：

[单选题]OSI第二层数据封装完成后的名称是：()

帧

[单选题]You are a senior network administrator at Ezonexam, and while performing the password recovery procedure on your 2500 series Cisco router, you type in the following command:o/r 0x2142

It is used to bypass the configuration in NVRAM.

解析：解析：Explanation:

[单选题]当配置一个CISCO的路由器时，缺省的DR和BDR优先级是（）。

1

[单选题]A Ezonexam switch is configured with all ports assigned to VLAN 2. In addition, all ports are configured as full-duplex FastEthernet. What is the effect of adding switch ports to a new VLAN on this switch?

An additional broadcast domain will be created.

解析：解析：Explanation:

[单选题]下列对访问控制列表的描述不正确的是（）。

访问控制列表可以应用于路由更新的过程当中

[单选题]VLAN主干协议VTP的默认工作模式是()

服务器模式