1. Suppose that Bob sends 882,000 bits to Alice over a 1.75 Kbps link (note, 1 Kbps bps) that uses circuit switching. Suppose that circuit switching on the link is implemented using TDM, that a frame is 1 sec, and that a frame consists of 5 slots. Bob is assigned one slot in every frame. How many minutes does it take Bob to transmit all bits to Alice? (5 points) 2. Suppose that a router is transmitting a packet and that there are N additional packets in the queue of the router. Suppose also that x bits of the currently-being-transmitted packet has been transmitted. Assume that all packets are composed of L bits, and that the output link of the router has a transmission rate of R bits/sec. What is the queuing delay of the Nth (last) packet in the queue of the router? (5 points) 3. Suppose that Router A and Router B are connected via a 1 Kbps link, and that the two routers are 10 meters apart. Suppose that Router A has 6 packets in its queue when a new packet arrives at Router A. Assume the following a. Every packet consists of 500 bits b. Propagation speed of a bit over the link connecting the c. Processing delay of a (whole) packet at a router takes What is the total delay of the new packet, .e., how long new packet to arrive at Router B from the time it arrived at two routers is meter/sec 20 milliseconds (i.e, seconds) does it take the Router A? In your solution, clearly identify all four delay components the new packet experiences. (10 points)