While troubleshooting a connectivity problem on the network, you issue the ping
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?
A．The data link layer
B．The application layer
C．The access layer
D．The session layer
E．The network layer
正确答案：E解析：Explanation:TCP/IP includes ICMP, a protocol designed to help manage and control the operation of a TCP/IP network. The ICMP protocol provides a wide variety of information about a network's health and operational status. Control message is the most
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