[单选题]The Ezonexam network administrator has issued the "VTP password ezonexam" command on a Cisco device. What is the purpose of this command?

正确答案 ：D

It is used to validate the sources of VTP advertisements sent between switches

[单选题]要把交换机的配置文件保存到tftp服务器，应使用的命令为（）

正确答案 ：B

copy running-configt ftp

[单选题]An administrator issues the show ip interface s0/0 command and the output displays that interface Serial0/0 is up, line protocol is up.What does "line protocol is up" specifically indicate about the interface?

正确答案 ：C

Keepalives are being received on the interface.

解析：解析：Explanation:

[单选题]路由器上“水平分割”的功能是：()

正确答案 ：B

阻止路由环路

[单选题]哪一个命令可以设置路由器特权用户的“明文密码”（）

正确答案 ：A

enable password

[单选题]You wish to segment your LAN into multiple broadcast domains. Which technology method should you implement in order to do this?

正确答案 ：D

Virtual LANs

解析：D 解析：Explanation:

[单选题]路由器“全局模式”的提示符为（）

正确答案 ：C

(config)

[单选题]FTP工作在OSI哪一层（）

正确答案 ：D

应用层

[多选题]When you compare the differences between half-duplex and full-duplex Ethernet, which of the following characteristics are exclusive to half-duplex? (Select two answer choices)

正确答案 ：AD

Half-duplex Ethernet operates in a shared collision domain.

Half-duplex Ethernet has lower effective throughput.

解析：解析：Explanation:

[单选题]配置路由器时，封装PPP协议的命令是：()

正确答案 ：A

encap ppp

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