שאלה | Suppose users share a 2 Mbps link. Each user transmits continuously at 1 Mbps when transmitting, but each user transmits only 20% of the time. For packet switching, why will there be no queuing delay if two or fewer users transmit at the same time? Why will there be a queuing delay if three users transmit at the same time?

Suppose users share a 2 Mbps link. Each user transmits continuously at 1 Mbps when transmitting, but each user transmits only 20% of the time. For packet switching, why will there be no queuing delay if two or fewer users transmit at the same time? Why will there be a queuing delay if three users transmit at the same time?

		Because the router's CPU can only process two users at a time.
		Because two users' combined rate equals the link capacity, while three users exceed it.
		Because the link layer protocol only supports even numbers of connections.
		Because the propagation delay increases when a third user joins the network.

מיין לפי