Question 2 a) Describe the signal pattern produced on the medium by the Manchester-encoded preamble of the IEEE 802.3 MAC frame. b) Explain the term handoff. c) Assume a system of 32 cells with a cell radius of 1.6 km, a total of 32 cells, a total frequency bandwidth that supports 336 traffic channels, and a reuse factor of If there are 32 total cells, what geographic area is covered, how many channels are there per cell, and what is the total number of concurrent calls that can be handled? d) What is the difference between a virtual channel and a virtual path? e) How does Fast Ethernet differ from 10BASE-T, other than the data rate?

Question 2 a) Describe the signal pattern produced on the medium by the Manchester-encoded preamble of the IEEE 802.3 MAC frame. b) Explain the term handoff. c) Assume a system of 32 cells with a cell radius of 1.6 km, a total of 32 cells, a total frequency bandwidth that supports 336 traffic channels, and a reuse factor of If there are 32 total cells, what geographic area is covered, how many channels are there per cell, and what is the total number of concurrent calls that can be handled? d) What is the difference between a virtual channel and a virtual path? e) How does Fast Ethernet differ from 10BASE-T, other than the data rate?

Operations Research : Applications and Algorithms

4th Edition

ISBN:9780534380588

Author:Wayne L. Winston

Publisher:Wayne L. Winston

Chapter20: Queuing Theory

Section20.10: Exponential Queues In Series And Open Queuing Networks

Problem 8P

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not handwritten A 3000-km long, 1 Mbps link is used to transmit 1000-bit data packets using the Selective Repeat protocol. If the speed of light in this link is 2 x 105 km/second. What is the minimum number of bits the sequence numbers should be? Assume no flow control, and negligible transmission and processing times for acknowledgments. (Take 1M = 1000,000.)
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Assume we have a very slow medium which can send bits at the rate of 1 bit per second. Host A has to send bits 101, starting at t=0 Host B has to send bits 111, starting at t=0 Host C has to send bits 011, starting at t=0 Using TDMA (Time Division Multiple Access), with the order ABC, what is the signal sent over the wire? Fill in the slot owner as A, B, or C. Fill in each slot in the table with 0 for 0 1 for 1 or for no bit (There may be extra slots in the table at the end; simply leave them blank) (table will be in the answer section) A wasted slot is a slot where there is a node with data to send but no node is sending any data. A used slot is a slot containing data. How many wasted slots are there? What is the efficiency? (efficiency = used slots / (wasted slots + used slots) 3. Assume all the information is the same as the previous question except: Host A has to send bits 101, starting at t=1 Host B has to send bits 111, starting at t=2 Host C has to send bits 011,…
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