#4 need Q1. How does a single-bit error differ from a burst error? In a block code, a dataword is 20 bits and thecorresponding codeword is 25 bits. What are the values of k, r, and n according to the definitions in thetext? 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 needto be added to the dataword to make the dividend? What is the size of theremainder? What is the size of the divisor?Q3. Given the dataword 10100110101 and the divisor 10101, show the generation ofthe CRC codeword at the sender site (using binary division). Now convert the dataword and divisor inpolynomials 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 theChecksum?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?

Note: Answering only the 4th question as only the 4th question is asked by a student to answer. A…

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Q4. A sender has four data items to send: 466F, 726F, 757A, and 616E. What is the value of the Checksum?

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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Question

#4 need

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?

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