2. Consider two hosts A and B, connected by a single link of rate R bps. Suppose that the two

hosts are separated by m meters and suppose that propagation delay is s meters/sec. Host A is

to send a packet of size L bits to Host B.

a. Express the propagation delay dprop.

b. Determine the transmission time of the packet dtrans.

c. Ignoring processing and queuing delay, obtain an expression for the end-to-end delay.

d. Suppose Host A begins to transmit the packet at time t=0. At time t-dtrans, where is

the last bit of the packet?

e. Suppose dprop is greater than dirans. At time t= durans, where is the first bit of the packet

f. Suppose dprop is less than dirans. At time t= dtrans, where is the first bit of the packet

g. Suppose s=2.5×10%, L=100bits and R=28kbps. Find the distance m so that dprop

equals dtrans.