1. (25 pts) Consider a packet of length 1000 bytes that starts at host C and travels over two links connected by a router to host D. The figure below shows the transmission rate and length for each link. Let the propagation speed on both links be 10 m/s, the packet switch processing delay be 10 msec, and the queuing delay be 20 msec. rate 1 Mbps rate 2 Mbps Host C router Host D length 1000 km length 1000 km As this test does not allow calculators, to answer the following questions, you can set up the expression including all the numbers to show the answer rather than calculating a number. (a) What is the end-to-end delay of this packet? (b) Suppose that host C sends a second packet as soon as possible after the first packet. and this packet is also 1000 bytes long. Given your answer to (a), if starts the transmission of the first packet at time 0. then at what time does the last byte of second packet arrive at D? 1. (25 pts) Consider a packet of length 1000 bytes that starts at host C and travels over two links connected by a router to host D. The figure below shows the transmission rate and length for each link. Let the propagation speed on both links be 10 m/s, the packet switch processing delay be 10 msec, and the queuing delay be 20 msec. rate 1 Mbps rate 2 Mbps Host C router Host D length 1000 km length 1000 km As this test does not allow calculators, to answer the following questions, you can set up the expression including all the numbers to show the answer rather than calculating a number. (a) What is the end-to-end delay of this packet? (b) Suppose that host C sends a second packet as soon as possible after the first packet. and this packet is also 1000 bytes long. Given your answer to (a), if starts the transmission of the first packet at time 0. then at what time does the last byte of second packet arrive at D