Figure 3 presents a network where N users are sharing a link of 1 Mbps bandwidth. Users are generating data at a rate of 100 kbps when busy, but are busy generating data only with probability p=0.1. a. What is N, the maximum number of users that can be supported simultaneously under circuit switching? b. If packet switching is used instead, give a formula (in terms of p, N, M) for the probability that more than M users are sending data. c. Assuming packet switching and using the formula you have derived in (b), if the number of users N=40, what is the probability that more than 15 users are active at same time? N users Figure 3. Question 4. 1 Mbps link