2. Consider a network as shown in the Figure below. Two alternate links are available for the node A to communicate with node B. The velocity of propagation between each node in link 1 (A-x-y-z-B) is 2* 108 m/s with the transmission rate of 550 Mbps and the velocitly propagation between each node in link 2 (A-p-q-r-B) is 3* 108 m/s with the transmission rate of 575 Mbps. The node A is generating 1134 packets each with size of 512 bytes. Distance from A to B is 1020 km for both the link. (6 marks) a. Which link is best in terms of end-to-end delay if the intermediate switches are use a circuit switching (ignore circuit setup delay)? b. Which link is best in terms of end-to-end delay if the intermediate switches are use a packet switching and each switch will take 3 ms for processing for every packet (ignore queuing delay)? c. In case of packet switching, at what time 272th packet leave the switch y in link 1. P