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assignments - Fall 2009 Assignment 2 Reading 1 Nader Mir...

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Fall 2009 Assignment 2 Reading: 1. Nader Mir, Computer and Communication Networks , Chapters 5, 6, 13 and 14. 2. Professor Cantrell’s review of digital communications (corresponding to items 1 and 3 in the syllabus) 3. Professor Cantrell’s survey of Layer 2 technologies Graded Exercises: 1. Nader Mir, Computer and Communication Networks , Chapter 3, Problem 1. 2. Nader Mir, Computer and Communication Networks , Chapter 3, Problem 2. 3. Nader Mir, Computer and Communication Networks , Chapter 4, Problem 1. 4. Nader Mir, Computer and Communication Networks , Chapter 4, Problem 2. 5. The bit string 100101011 emerges from the serializer unit of a modulator. Sketch the waveforms that emerge from the line driver if the line coding is: (a) Natural NRZ (b) Polar NRZ (c) Manchester 6. Find the information content per symbol, H ( X ) , where X is the set of letters A–Z of the North American Latin alphabet. The table of English letter frequencies on the following page may be useful. (Note that the frequencies are percents; thus, 12.75 percent of the symbols in a typical English message are the letter ”e”.)
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