(10 marks) Consider an Internet network connection with a 200Mbps link speed to be shared among several users. Each user requires 10Mbps but each transmits only 20 percent of the time. a. For a circuit-switched network, how many users can be supported? Explain.

b. For a packet-switched network, assume there are 20 users. Will the network ever experience queuing delay? What about with 30 users?

c. Determine the probability of 30 users simultaneously transmitting. Does your answer here support the use of a packet or circuit-switched network for the 200Mbps link where users require 10 Mbps. Explain.