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6. Consider 7-bit messages that we encode into 11-bit codewords using 4 parity bits. Thus our codewords look like (a, b, c, d, e, f, 9;P1+P2. P3: P4) where a, b, c, d, e, f, g are the original 7-bits of the message, and p1,P2; P3, P4 are 4 parity bits. Recall the two properties from Tutorial 2: (0) each bit of the original message appears in at least two parity bits, and (1) no two bits of the original message appear in exactly the same set of parity bits. For each of the following group of proposed parity bits, select whether they satisfy property (0), property (1), both, or neither. a. P1 = a edee P2 = a e be e f P3 = bc® ƒ ® g P4 = cd@g

6. Consider 7-bit messages that we encode into 11-bit codewords using 4 parity bits. Thus our codewords look like (a, b, c, d, e, f, 9;P1+P2. P3: P4) where a, b, c, d, e, f, g are the original 7-bits of the message, and p1,P2; P3, P4 are 4 parity bits. Recall the two properties from Tutorial 2: (0) each bit of the original message appears in at least two parity bits, and (1) no two bits of the original message appear in exactly the same set of parity bits. For each of the following group of proposed parity bits, select whether they satisfy property (0), property (1), both, or neither. a. P1 = a edee P2 = a e be e f P3 = bc® ƒ ® g P4 = cd@g

Database System Concepts
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
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6. Consider 7-bit messages that we encode into 11-bit codewords using 4 parity bits. Thus our codewords look like (a, b, c, d, e, f, 9, P1, P2, P3. P4) where a, b, c, d, e, f, g are the original 7-bits of the message, and p1,P2, P3; P4 are 4 parity bits. Recall the two properties from Tutorial 2: (0) each bit of the original message appears in at least two parity bits, and (1) no two bits of the original message appear in exactly the same set of parity bits. For each of the following group of proposed parity bits, select whether they satisfy property (0), property (1), both, or neither. a. P1 = a edee P2 = a ebe e e ƒ P3 = becef@g P4 = c deg
Transcribed Image Text:6. Consider 7-bit messages that we encode into 11-bit codewords using 4 parity bits. Thus our codewords look like (a, b, c, d, e, f, 9, P1, P2, P3. P4) where a, b, c, d, e, f, g are the original 7-bits of the message, and p1,P2, P3; P4 are 4 parity bits. Recall the two properties from Tutorial 2: (0) each bit of the original message appears in at least two parity bits, and (1) no two bits of the original message appear in exactly the same set of parity bits. For each of the following group of proposed parity bits, select whether they satisfy property (0), property (1), both, or neither. a. P1 = a edee P2 = a ebe e e ƒ P3 = becef@g P4 = c deg
b. P1 = a cede ƒ P2 = a bed@ f @ g P3 = a bec® e ®g P4 = beced@e с. Pi = a ee P2 = be e e f P3 = c ƒ g P4 = d eg
Transcribed Image Text:b. P1 = a cede ƒ P2 = a bed@ f @ g P3 = a bec® e ®g P4 = beced@e с. Pi = a ee P2 = be e e f P3 = c ƒ g P4 = d eg
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