1. Consider an application that transmits data at a steady rate. Also when such an application starts, it will continue running for a relatively long time. Answer the following questions and justifying your answers:

a) Would a packet-switched network or a circuit-switched network be more appropriate for this application? WHY?

b) Suppose that a packet-switched network is used. Assume the sum of the application data rates is less than the capacities of each and every link. Is some congestion control needed? WHY?