[单选题]下列对RIP的配置中，合法的命令是（）

正确答案 ：C

router rip network 10.12.0.0

[单选题]OSI第二层数据封装完成后的名称是：()

正确答案 ：C

帧

[多选题]In which Spanning-Tree states does a switch port learn MAC addresses? (Select two)

正确答案 ：CD

Forwarding

Learning

解析：解析：Explanation:

[单选题]While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "request times out."At which OSI layer is this problem associated with?

正确答案 ：E

The network layer

解析：解析：Explanation:

[单选题]Ezonexam has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?

正确答案 ：B

VTP will allow switches to share VLAN configuration information

[单选题]扩展IP访问权限表的表号范围是：()

正确答案 ：C

100-199

[单选题]“ipaccess-group”命令在接口上缺省的应用方向是什么"（）。

正确答案 ：C

out

[单选题]查看E0端口配置信息的命令是：()

正确答案 ：D

show interfacee0

[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.

[单选题]当配置一个CISCO的路由器时，缺省的DR和BDR优先级是（）。

正确答案 ：B

1

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