Q1. How does a single-bit error differ from a burst error? In a block code, a dataword is 20 bits and the corresponding codeword is 25 bits. What are the values of k, r, and n according to the definitions in the text? How many redundant bits are added to each dataword? Q2. In CRC, if the dataword is 5 bits and the codeword is 8 bits, how many Os need to be added to the dataword to make the dividend? What is the size of the remainder? What is the size of the divisor? Q3. Given the dataword 10100110101 and the divisor 10101, show the generation of the CRC codeword at the sender site (using binary division). Now convert the dataword and divisor in polynomials and show the generation of the CRC codeword at the sender site. Q4. A sender has four data items to send: 466F, 726F, 757A, and 616E. What is the value of the Checksum? Q5. a) What is the function of the twisting in the twisted-pair cable? b) What is the purpose of cladding in an optical fiber?

Q1. How does a single-bit error differ from a burst error? In a block code, a dataword is 20 bits and the corresponding codeword is 25 bits. What are the values of k, r, and n according to the definitions in the text? How many redundant bits are added to each dataword? Q2. In CRC, if the dataword is 5 bits and the codeword is 8 bits, how many Os need to be added to the dataword to make the dividend? What is the size of the remainder? What is the size of the divisor? Q3. Given the dataword 10100110101 and the divisor 10101, show the generation of the CRC codeword at the sender site (using binary division). Now convert the dataword and divisor in polynomials and show the generation of the CRC codeword at the sender site. Q4. A sender has four data items to send: 466F, 726F, 757A, and 616E. What is the value of the Checksum? Q5. a) What is the function of the twisting in the twisted-pair cable? b) What is the purpose of cladding in an optical fiber?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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