Which NIC setting allows signals to travel in both directions over a medium simultaneously?

Which NIC setting allows signals to travel in both directions over a medium simultaneously?

• A. Half-Duplex
• B. Full-Duplex
• C. Duplex
• D. Simplex

Answer: (C)

The concept being tested is how NICs manage two-way communication on a link. When signals can travel in both directions at the same time, the link is in full-duplex mode. In full-duplex, transmit and receive paths are active simultaneously, so devices can send and receive concurrently without waiting for the other to finish, which prevents collisions and doubles the effective bandwidth for two-way traffic. In contrast, half-duplex allows only one direction at a time, so devices must take turns and may experience collisions on shared media. Simplex is one-way only, with data flowing in a single direction. The term duplex by itself is vague, but for true simultaneous bi-directional communication you use full-duplex.

The concept being tested is how NICs manage two-way communication on a link. When signals can travel in both directions at the same time, the link is in full-duplex mode. In full-duplex, transmit and receive paths are active simultaneously, so devices can send and receive concurrently without waiting for the other to finish, which prevents collisions and doubles the effective bandwidth for two-way traffic. In contrast, half-duplex allows only one direction at a time, so devices must take turns and may experience collisions on shared media. Simplex is one-way only, with data flowing in a single direction. The term duplex by itself is vague, but for true simultaneous bi-directional communication you use full-duplex.