[单选题]介质100BaseT的最大传输距离是：()

正确答案 ：B

100m

[单选题]两台路由器直连到一起，应该使用的线缆为（）

正确答案 ：A

交叉线缆

[单选题]After logging into a router and typing in a few show commands, you press the up arrow key. What will this do?

正确答案 ：A

It will recall the previous command line

解析：解析：Explanation:

[单选题]A Ezonexam PC has the IP address 172.16.209.10 /22. What is the subnet of this address?

正确答案 ：C

172.16.208.0

解析：解析：Explanation:

[单选题]Your network uses the172.12.0.0 class B address. You need to support 459 hosts per subnet, while accommodating the maximum number of subnets. Which mask would you use?

正确答案 ：D

255.255.254.0.

解析：解析：Explanation:Toobtain459hoststhenumberofhostbitswillbe9.Thiscansupportamaximumof510hosts.Tokeep9bitsforhostsmeansthelastbitinthe3rdoctetwillbe0.Thisgives255.255.254.0asthesubnetmask.

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