Problem: Suppose two hosts, A and B are separated by 2,000,000 kms and are connected by a direct link of R = 4 Mbps. Suppose the propagation speed over the link is 2.5 x 10 m/s. A sends a 24 MB file to B. B sends an 8 MB files to A. A and B start sending files at the same time. The direct link is evenly shared by A and B. How long does it take to complete sending two files?4. Suppose two hosts, A and B are separated by 2,000,000 kms and are connected by a direct link of R = 4 Mbps. Suppose the propagation speed over the link is 2.5 x 10 m/s. A sends a 24 MB file to B. B sends an 8 MB files to A. A and B start sending files at the same time. The direct link is evenly shared by A and B. How long does it take to complete sending two files?