1. A computer is unable to access the network. When you check the LED lights near the computer’s network port, you discover the lights are not lit. Which layer of the OSI model are you using to troubleshoot this problem? At which two layers does the network adapter work?

Answer 1

You are using the Physical layer of the OSI model to troubleshoot this problem.

The network adapter works at both the Physical layer and the Data Link layer. At the Physical layer, it handles the transmission of digital signals over the physical medium, such as copper or fiber optic cables. At the Data Link layer, it is responsible for framing the data into packets and handling error detection and correction.