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A WAN is a data Communications network that covers a relatively broad geographic area and that often uses transmission facilities provided by common carriers, such as telephone companies. WAN technologies generally function at the lower two layers of the OSI reference model: the physical layer and the data link layer as shown below.

OSI layers    WAN specificalions

Notę: Occasionally WAN's would also be considered to operate at layer 3, but sińce this question asked for only 2 chopices layers 1 and 2 are better choices.

QUESTION NO: 2

While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "reąuest times out."

At which OSI layer is this problem associated with?

A.    The data link layer

B.    The application layer

C.    The access layer

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