Throughput is defined as the amount of data transmitted across a network over a period of time, typically expressed in bits or bytes per second.

• A. Bandwidth
• B. Latency
• C. Transmission Rate
• D. Throughput

Answer: (D)

Throughput is the actual rate at which useful data is delivered across a network per unit time. It’s the real data rate you observe end-to-end, typically measured in bits or bytes per second, and it reflects all inefficiencies—overhead from headers and protocols, retransmissions, and congestion. Even with a high-capacity link, throughput can be lower because not all of the bandwidth is available for payload data. Bandwidth, by contrast, is the maximum capacity of the link, not necessarily what’s achieved in practice. Latency refers to the delay a piece of data experiences traveling from sender to receiver, not the amount of data transferred per second. Transmission rate can describe how fast data is sent, but throughput specifically captures the actual, useful data delivered per unit time, making it the best fit for the definition.