[单选题]在OSI七层模型中,介质工作在哪一层()
正确答案 :C
物理层
[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]The network administrator has configured port security on a Ezonexam switch. Why would a network administrator configure port security on this Ezonexam device?
正确答案 :A
To prevent unauthorized hosts from getting access to the LAN
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]下列关于路由器和交换机的描述中,错误的是()
正确答案 :D
交换机可以转发广播
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