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?
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 of the OSI model.
To troubleshoot the problem, we are using the Physical Layer of the OSI model. The Physical Layer is responsible for transmitting raw data bits over a physical medium, in this case, the network cable.
The network adapter, also known as the Network Interface Card (NIC), works at both the Physical Layer and the Data Link Layer of the OSI model.
At the Physical Layer, the network adapter converts digital data into electrical signals for transmission over the network cable.
At the Data Link Layer, the network adapter encapsulates data into frames and includes the necessary headers and trailers for communication with other devices on the network.