Dont copy from the source of internet or other answering sources I will dowvote for sure answer only if you have accurate knowledge otherwise receive dislike for sure Suppose users share a 2 Mbps...

Dont copy from the source of internet or other answering sources

I will dowvote for sure

answer only if you have accurate knowledge otherwise receive dislike for sure

Suppose users share a 2 Mbps (i.e., 2×106 bits per second) link. Also suppose each user transmits continuously only at 1 Mbps when transmitting, but each user transmits only 20% of the time.
a)For the remainder of this problem, suppose packet switching is used. Why will there be essentially no queuing delay before the link if two or fewer users transmit at the same time? Why will there be a queueing delay if three users transmit at the same time?
b)Note that the probability that a given user is transmitting is 0.2 (i.e., 20% of time). Suppose now there are three users. Find the fraction of time during which the queue grows.