题目内容
(请给出正确答案)
[主观题]
While troubleshooting a connectivity problem on the network, you issue the ping command fr
om 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
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