You are troubleshooting network connectivity on a computer. The machine is unable to access the network, but all other devices on the same network are working properly. To rule out a hardware failure, you need to test if the computer's network interface card (NIC) is functioning correctly. Which networking tool should you use for this specific task?
A loopback plug is a simple tool used to test a physical port on a device like a network interface card. It creates a closed loop by connecting the transmit pins to the receive pins, sending a signal out and immediately back into the port. This allows a technician to test the functionality of the port in isolation, without involving external network cables or devices. A cable tester is used to check the integrity of the cable itself, a WiFi analyzer is for troubleshooting wireless networks, and a toner probe is used to trace and identify a specific cable within a bundle.
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CompTIA A+ 220-1101 (V14)
Networking
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