# Kurose and Ross Edition 6 Exercise 1 Question P29 (Page No 76)

78 views

Suppose there is a 10 Mbps microwave link between a geostationary satellite and its base station on Earth. Every minute the satellite takes a digital photo and sends it to the base station. Assume a propagation speed of $2.4 \times 10^8$meters/sec.

1. What is the propagation delay of the link?
1. What is the bandwidth-delay product, $R \times d _{prop}$?
2. Let x denote the size of the photo. What is the minimum value of x for the microwave link to be continuously transmitting?

## Related questions

1
64 views
Suppose two hosts, A and B, are separated by 20,000 kilometers and are connected by a direct link of R = 2 Mbps. Suppose the propagation speed over the link is $2.5 10^8$meters/sec. How long does it take to send the file, assuming it is sent continuously? Suppose ... send a packet until the preceding one is acknowledged. How long does it take to send the file? Compare the results from (a) and (b).
This elementary problem begins to explore propagation delay and transmission delay, two central concepts in data networking. 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 the propagation speed along the link is ... $d _{prop}$ equals $d _{trans}$.
Suppose two hosts, A and B, are separated by 20,000 kilometers and are connected by a direct link of R = 1Gbps. Suppose the propagation speed over the link is $2.5 10^8$ meters/sec Calculate the bandwidth-delay product, $R \times d _{prop}$. Consider sending a file of ... the maximum number of bits that will be in the link at any given time? What is the width (in meters) of a bit in the link?