[单选题]关于静态NAT，下面（）说法是正确的。

正确答案 ：C

静态NAT将内部地址一对一静态映射到内部全局地址

[单选题]TCP23是（）协议端口号；UDP69是（）端口号；TCP80是（）端口号。

正确答案 ：C

TELNET TFTP HTTP

[单选题]EIGRP的管理距离（）

正确答案 ：C

110

[多选题]下列哪一设备工作时，要用到OSI的七个层（一层到七层）（）

正确答案 ：ABC

PC

网管机

WEB服务器

解析：ABC

[单选题]You are an administrator of the Ezonexam switched network and your goal is to reduce some of the administrative overhead on your network. You plan on achieving this by configuring a new VLAN for each department in the Ezonexam network.However, you need to share the VLAN information across numerous switches. Which of the following would allow you accomplish this?

正确答案 ：D

VTP

解析：D 解析：Explanation:

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