正确答案: C

测试TCP/IP协议是否正常

题目：命令“ping127.0.0.1”的功能是（）

解析：C

查看原题

举一反三的答案和解析：

[单选题]对于使用链路状态路由协议的路由器如何选择最佳路线到达子网，下列哪项是正确的（）

通过针对链路状态数据库中的信息运行SPF算法，路由器会计算出最佳路由

[单选题]Why might the Ezonexam network administrator set the configuration register to 0x2142 on a 2600 series Cisco router?

To reset the console password

解析：解析：Explanation:

[多选题]As the Ezonexam network administrator, you are required to have a firm understanding of the OSI model. Why does the data communication industry use the layered OSI reference model? (Choose two)

It encourages industry standardization by defining what functions occur at each layer of the model

It divides the network communication process into smaller and simpler components; thus aiding component development, design and troubleshooting

解析：解析：Explanation:

[单选题]At which layer of the OSI model does the protocol that provides the information displayed by the "show cdp neighbors" command operate?

Data link

解析：解析：Explanation:

[单选题]Given that you have a class B IP address network range, which of the subnet masks below will allow for 100 subnets with 500 usable host addresses per subnet?

255.255.254.0

解析：解析：Explanation:

[多选题]在路由器上，可以使用的命令有：()

ping

show interfaces

show ip route

解析：ABC