Quiz_2_Wed_Afternoon - EE3015 Computer Networks Quiz 2 (45...

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EE3015 Computer Networks Quiz 2 (45 min.) Wed. afternoon Semester A, 2010/11 Name: ___________________________ Student ID: _____________________ Answer ALL questions. Write your answers on the question paper. 1. (8%) The sampling rate of CD audio is 44.1 kHz, and two bytes are used to represent each sample. What is the file size for a song of three minutes recorded in stereo? 2. (8%) What is the difference between serial transmission and parallel transmission? 3. (8%) Lasers and single-mode fiber, though more expensive, are sometimes used to send light over a fiber link. Why? 4. (8%) What is CSMA/CD? Explain briefly. 5. Consider the CRC scheme with generator polynomial x +1. a) (3%) Consider the information bits 100. What is the CRC bit pattern?
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6. Nodes A, B and C are competing for access to a channel using slotted ALOHA.
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This note was uploaded on 05/01/2011 for the course ELECTRICAL EE3015 taught by Professor Albertsun during the Spring '11 term at City University of Hong Kong.

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Quiz_2_Wed_Afternoon - EE3015 Computer Networks Quiz 2 (45...

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