Determine the transfer time of a 800KB file with a mobile data network (a) with a transmission rate of 100Kbps ?(b) repeat the same for 802.11 WLAN operating at 5Mbps ?(c) What is the length of the file that WLAN can carry in the time that mobile data service carried a 50KB file ? (d)What do you infer from the answer to the above questions?