What are three largest sources of delay (latency) in message transmissions?
A) propagation delay, delay at hosts, delay at intermediary devices
B) delay at hosts, delay at intermediary devices, delay due to packet collisions
C) delay of user response, delay at intermediary devices, propagation delay
D) delay of user response, delay at intermediary devices, delay due to packet collisions
E) propagation delay, delay at hosts, delay due to packet collisions

Question

Quizplus · Accepted Answer

The three largest sources of delay in message transmissions are propagation delay, delay at hosts, and delay at intermediary devices. Propagation delay is the time it takes for a signal to travel from one point to another. Delay at hosts is the time it takes for a host to process a message, such as decoding and checking for errors. Delay at intermediary devices is the time it takes for the message to pass through switches, routers, and other forwarding devices. Delay due to packet collisions and user response time are also factors, but they are not typically as significant as the other three mentioned.

What Are Three Largest Sources of Delay (Latency) in Message