[单选题]The Ezonexam network administrator has just issued the "switchport trunk native vlan 998" command on switch VE2. What is the function of this command?
正确答案 :B
It designates VLAN 998 for untagged traffic
[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]路由器上,清空路由表的命令是()
正确答案 :D
clearip route*
[单选题]路由器上激活端口的命令是()
正确答案 :B
no shutdown
[单选题]路由器上,命令“show int s0”的显示结果为:Serial0 is up,line protocol is down出现该结果的可能原因是()
正确答案 :C
两端设备协议不一致
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