P9. consider the discussion in section 1.3 of packet switching versus circuit switching in which an example is provided with a 1 mbps link. users are generating data at a rate of 100 kbps when busy, but are busy generating data only with probability p = 0.1. suppose that the 1 mbps link is replaced by a 1gbps link. (a) what is n, the maximum number of users that can be supported simultaneously under circuit switching?