Questions (41)-(46): File distribution problem In the file distribution system, assume that there are one server and N peers. Denote the upload rate of the server by us, the upload rate of the ith peer by u, and the download rate of the ith peer by di. Also denote the size of the file to be distributed (in bits) by F. The distribution time is the time it takes to get a copy of the file to all N peers. Let dmin denote the download rate of the peer with the lowest download rate. Let Des and Dp2p denote the minimum distribution time for the client-server architecture and peer-to-peer architecture respectively: De-s=max{NF/us, F/dmin} Dp2p =max{F/us, NF/Utotal, F/dmin} Us di network Uj Assume that all peers have the same upload rate u. We set F/u= 1 hour, u. = 10u, and dmin >= u.. (41) For N=20, what is NF/us? A. 0.1 hour B. 0.6 hour C. 1 hour D. 2 hours (42) For N=10, what is F/dmin? A. 0.1 hour B. 0.6 hour C. 1 hour D. 2 hours (43) For N=10, what is Do-s? A. 0.1 hour B. 0.6 hour C. 1 hour D. 2 hours (44) For N=10, what is Flus? A. 0.1 hour B. 0.6 hour C. 1 hour D. 2 hours 5