If a network cable is connected but the computer does not detect the network, which internal component should be checked?

Correct answer: Network interface card

The network interface card, or NIC, provides the computer’s wired Ethernet connection and communicates with the network through the cable. If the cable is connected but no network is detected, the NIC, its indicator lights, driver and port should be checked. Option B is correct. A graphics card handles images, a sound card handles audio, and cache memory supports fast processing rather than network access.