1. Packet-switched network and circuit-switched network (20 points). Consider an application that transmits data at a steady state (e.g., the sender generates an N-bit unit of data every k time units, where k is small and fixed). Also, when such an application starts, it will continue running for a relatively long period of time. Answer the following questions. Briefly justify your answers. a. (10 points) Would a packet-switched network or a circuit-switched network be more appropriate for this application? Why? b. (10 points) Suppose that a packet-switched network is used and the only traffic in this network comes from such applications as described above. Furthermore, assume that the sum of the ap- plication data rates is less than the capacities of each and every link. Will the network be congested? Why