What does latency measure in a network context?

What does latency measure in a network context?

• A. The physical distance between devices.
• B. The time it takes for a single bit to travel from sender to receiver.
• C. The maximum rate of data transfer.
• D. The security of the connection.

Answer: (B)

Latency is the time it takes for data to get from the sender to the receiver. It reflects the total delay a bit (or a small packet) experiences as it traverses the network, including the time to propagate through the physical medium, to serialize and transmit the bits, and any processing or queuing delays along the way. That’s why the best description is the time it takes for a single bit to travel from sender to receiver—it directly captures the end-to-end delay. Distance by itself doesn’t equal latency, since speed, equipment, and congestion matter. Bandwidth is about how much data can move per unit time (rate), not how long it takes for a single bit to arrive, and security is about protection, not delay.

Latency is the time it takes for data to get from the sender to the receiver. It reflects the total delay a bit (or a small packet) experiences as it traverses the network, including the time to propagate through the physical medium, to serialize and transmit the bits, and any processing or queuing delays along the way. That’s why the best description is the time it takes for a single bit to travel from sender to receiver—it directly captures the end-to-end delay. Distance by itself doesn’t equal latency, since speed, equipment, and congestion matter. Bandwidth is about how much data can move per unit time (rate), not how long it takes for a single bit to arrive, and security is about protection, not delay.