[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]要把交换机的配置文件保存到tftp服务器,应使用的命令为()
正确答案 :B
copy running-configt ftp
[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:
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