consider two hosts X and Y that are directly connected by a communication link with the following parameters: distance d=2500 kilometers, propagation speed s = 2.510^8 m/s and transmission rate is R=40 Mbit/second. d. during transmission considered in c. what is the maximum number of bits in the communication link? (c. how large is the file end to end delay for transmitting a file with F=4,000,000 bits from X to y) e. what is the width in meters of a bit on the communication link? f. now supposed that the transmission bit rate r can be manually adjusted. how high for you need to set the transmission bit rate r such that the last bit of the file leaves the source x exactly when the first bit of the file reaches the destination Y? supposed that the file parameters file size, prop speed and distance are unchanged.