Imagine that you have trained your St. Bernard, Bernie, to carry a box of three 8-mm tapes instead of a flask of brandy.

(When your disk fills up, you consider that an emergency.) These tapes each contain 7 gigabytes. The dog can travel to your side, wherever you may be, at 18 km/hour. For what range of distances does Bernie have a higher data rate than a transmission line whose data rate (excluding overhead) is 150 Mbps? How does your answer change if (i) Bernie's speed is doubled; (ii) each tape capacity is doubled; (iii) the data rate of the transmission line is doubled. From the given data, the following details have been computed: • Bernie (dog) carries three 7GB (Giga byte) tape; hence, totally Bernie can carry 21 GB (i.e., 3 * 7 = 21). O Here, we have to find how long Bernie will take to transfer 21 GB data over a 150-Mbps line.

Compute the required timing: Convert the Bernie’s carrying data into mega bits (Mb): Convert this value into Mb (Mega Byte), and then multiply the value with 1024 and 8. Formula to calculate the required time in second to transfer data, divide the carrying data by transmission line. Substitute the value of “carrying data” as “172,032” and “transmission line” as “150” in the above formula: Convert the seconds into minute; divide the seconds’ value by 60. Therefore, approximately is required to transfer 21 GB of data over 150 Mbps line. In different cases: Speed of Bernie is doubled: • If speed of the Bernie is doubled, then the maximum value of travel distance is also doubled because the speed of Bernie is directly propositional to maximum travel distance.

Capacity of each tape is doubled: • If the capacity of each tape is doubled, then the travel distance is also doubled because when the capacity of each tape is increasing, the total data to be transfer is also increased, so this results to increase the travel distance. Transmission line’s data rate is doubled: • When the data rate of transmission line is doubled, the value of travel distance is divided into two because the data rate of transmission line is inversely proportional to traveling distance. What are Chegg Study step-by-step Computer Networks 5th Edition Solutions Manuals? Chegg Solution Manuals are written by vetted Chegg Communication & Networking experts, and rated by students - so you know you're getting high quality answers. Solutions Manuals are available for thousands of the most popular college and high school textbooks in subjects such as Math, Science (,, ), Engineering (,, ), and more.

COMPUTER NETWORKS FIFTH EDITION ANDREW S. TANENBAUM Vrije Universiteit Amsterdam, The Netherlands DAVID J. WETHERALL University of Washington Seattle, WA. Available in: Hardcover. Computer Networks is the ideal introduction to today's and tomorrow's networks. This classic best-seller has been totally.

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