Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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The message length in SHA-512 how many pages are occupied by a message of 2128 bits?
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- Consider the binary BCH code with length 127 and expected distance 6 using the binary field extension F 128 with size 128. What is the length of the code, and can you guarantee a minimum distance?arrow_forwardConsider the fixed-point Two's complement (2'sC) code with the codeword length N and the number of fraction bits F. Find the required values of N and F to represent the number +2.56 with an error less than 10-³. Give all the details for your solution.arrow_forwardSoftware developers use a number of models, depending on the application. Please help me sort these models by my life experiences.arrow_forward
- how many bit strings of length 6 have more 0s than 1s.arrow_forwardIf we use the 128-bit binary field extension F 128 to decode the 127-bit binary BCH code at a distance of 6, we get a total of 127 bits. How big is the code, and is there a guaranteed minimum separation?arrow_forwardGiven 11100111 find all binary strings of the same length that have a gamming distance of 4.arrow_forward
- How many bit strings contain exactly five 0’s and ten 1’s if every 0 must be immediately followed by a 1?arrow_forwardDecoding the 127-bit binary BCH code at a distance of 6 yields a total of 127 bits when using the 128-bit binary field extension F 128. Is there a guaranteed minimum distance, and how big is the code?arrow_forwardConsider all bit (binary digit) strings of length 12. How many begin with 110? How many begin with 11 and end with 10? How many begin with 11 or end with 10? How many have exactly four 1s?arrow_forward
- How many bit strings of length 10 begin and end with '11'?arrow_forwardThe modulus for the field GF(25) is x5+x2+1 and its elements are all five-bit strings. Calculate each of the following and enter your answer in exactly five bits (Example, 01101). 1. 11111 + 00001 2. 00011 x 00011 3. 01100 x 01100arrow_forward
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