Networking

8 points) Suppose users share a 20 Mbps nk and each user requires 200 Kbps when transmitting. Each user transmits only 25 percent of the time. a) When circuit switching is used, how many users can be supported? b) When packet switching is in use, why will there be essentially no queuing delay before the link if 100 or fewer users transmit at the same time? Why will there be a queuing delay if 101 users transmit at the same time? 2