6-Consider a transmission path between a source and a destination that has 4 intermediate routers. Each link has a propagation delay of 2ms, and a bit rate of 2 Mbps. A file of size K bits is to be transmitted over the path assuming two different scenarios: Circuit-Switching and Packet-Switching For the circuit-switched scenario, assume that it takes 1 second to set up the circuit. For the packet- switched scenario, assume that the data is transported in the form of packets of 1 Kbits each, where 24 bits are used as header and 1000 bits are used as payload. Note: Ignore the queuing and processing delays [15 points) a) Total delay to deliver the file using circuit-switching. b) Total delay to deliver the file using packet-switching. Assume that source sends one packet, waits until an acknowledgement is received (assuming that this takes 10ms after the packet has been completely delivered to the destination), then sends the next packet, and so on