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

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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 the propagation speed along the link is S meters/sec. Host A transmits a packet of size L bits to host B.
1 Suppose host A begins to transmit the packet at time t = 0. At time t = L/R secs, where is the last bit of the packet?
2 Suppose that the transmission delay is 12 secs and the propagation delay is 15 secs. At time t = 12 secs (transmission starts at t = 0), where is the first bit of the packet?
3 Suppose S = 2.5 X 108 m/sec, L = 100 bits and R = 28 kbps. Find the distance m so that the propagation delay and the transmission delay are equal.