Question: Consider two hosts, A and B, directly connected by a link of 40,000 Km, propagation speed 2.5*108 m/s, and transmission rate R=5 Mbps. Assume zero

Consider two hosts, A and B, directly connected by a link of 40,000 Km, propagation speed 2.5*108 m/s, and transmission rate R=5 Mbps. Assume zero queuing delay.

(e) (5 points) Suppose dprop is less than dtrans. At time t= dtrans, where is the first bit of the packet?

(f) (10 points) Calculate the bandwidth-delay product R* dprop.

(g) (10 points) Consider sending a file of 1,200,000 bits from host A to host B. Suppose the file is sent continuously as a large message. What is the maximum number of bits that will be in the link at any time? (Hint: the answer shall be the smaller value of bandwidth-delay product and packet size)

(h) (10 points) What is the width (in meters) of a bit in the link? (Hint: the width of a bit = length of link / bandwidth-delay product)

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