A network engineer is troubleshooting a network problem and can successfully ping between two devices. However, Telnet between the same two devices does not work. Which OSI layers should the administrator investigate next?
- from the network layer to the physical layer
- all of the layers
- only the network layer
- from the network layer to the application layer
Explanation: A successful ping indicates that everything is working on the physical, data link, and network layer. All of the other layers should be investigated.
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