Consider station A wants to send a message to station X. These two stations are connected using 3 different switches. suppose the control packet is 1,500 bytes is used for connection establishment and to close the connection. The data travels on all three links is 2.5 *108 m/s, the transmission rates of all three links are 2 Mbps,

the packet switch processing delay is 3 ms, the length of the first link is 5,000 km, the length of the second ink is 4,000 km, and the length of the last link is 1,000 km. Assume that the network uses both virtual circuit approach and datagram approach and answer the following:

i. Calculate the total end-to-end delay involved in virtual circuit approach. (4 marks) ii. What is the end-to-end delay for datagram approach? (4 marks) iii. What do your infer. Substantiate your answer. (2 marks)