Network Security

1. 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 2.4 108 meters/sec.

a. What is the propagation delay of the link?

b. What is the bandwidth-delay product, R dprop?

c. Let x denote the size of the photo. What is the minimum value of x for the microwave link to be continuously transmitting?

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