We have to send a 10,000 byte message over a six hop path in a circuit switched netwrok and a lightly loaded packet switched network. Both networks require the use of packets to send the message. The packet has a fixed and constand size of 1500 bits in which includes a 100 bit header. The setup time is 0.25 seconds and the delay per hop is 0.05 seconds.The data rate of the links is 150 kbps. a) How many packets are required to send the message? b) What is an end to end delay? Briefly describe. c) What is the end to end delay using circuit switching? d) What is the end to end delay of using packet switching?