[单选题]OSPF的度量值是什么()

正确答案 ：D

链路状态

[单选题]IP扩展访问列表的数字标示范围是多少（）。

正确答案 ：C

100-199

[单选题]You are given a PC, a router, and a cable. Select the correct combination that will allow you to log into router VE1 locally using a terminal emulation program such as HyperTerminal.

正确答案 ：B

Connect the PC's COM port to the router's console port using a rollover cable.

解析：B 解析：Explanation:

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