Assume a packet transmission system is designed to pass packets through intermediate stations and over the links between the stations. Station 1 to station 2 fibre over a distance of 2.5km Station 2 to station 3 - fibre over a distance of 5 km Station 3 to station 4 - fibre over a distance of 10km i) Assume the data rate used at each node is 800Mbps, that a sliding window large enough to hold all the required packets is available in each node, that ACKS arrive as necessary to maintain data flow, node processing time is negligible, and there are no errors. Find the elapsed time end-to-end when sending 10,000 octets of data using an ethernet frame of 1026 octets (assume the data load is sent directly to the physical level after a fragmentation process at the boundary of the physical level only.) Frames must be full size. ii) Now assume the network manager changed only the node 3 to node 4 transmission to stop and wait with a bit rate of 8Gbps with negligible sized ACK packets. Node 3 has sufficient buffering to hold as many frames as are required. Show by calculation the effect on the end to end delay.