6.2-1 Two dimensional parity: error detection and correction. Suppose that a packet's payload consists of 10 eight-bit values (e.g., representing ten ASCII-encoded characters) shown below. (Here, we have arranged the ten eight-bit values as five sixteen-bit values). The received data (including parity) bits are shown. Even parity is used. One received data bit has been flipped. Which one is it? (row and column numbering start at 1) Use the pulldown boxes to specify the row and column where the flipped bit appears (indicates start at 1). [Note: You can find more examples problems similar to this here.) 01001010 00011011 1 00001110 01000001|1 00111110 000100010 11101100 00001111|1 10011111 00011001 1 received data and 2D parity bits 00001001 11011101 0 In which row has the bit flip occurred? |In which column has the bit flip occurred? 1.8 2.4 3.5 4. 10 5.9 6.3 7.1 8.7 9.2

6.2-1 Two dimensional parity: error detection and correction. Suppose that a packet's payload consists of 10 eight-bit values (e.g., representing ten ASCII-encoded characters) shown below. (Here, we have arranged the ten eight-bit values as five sixteen-bit values). The received data (including parity) bits are shown. Even parity is used. One received data bit has been flipped. Which one is it? (row and column numbering start at 1) Use the pulldown boxes to specify the row and column where the flipped bit appears (indicates start at 1). [Note: You can find more examples problems similar to this here.) 01001010 00011011 1 00001110 01000001|1 00111110 000100010 11101100 00001111|1 10011111 00011001 1 received data and 2D parity bits 00001001 11011101 0 In which row has the bit flip occurred? |In which column has the bit flip occurred? 1.8 2.4 3.5 4. 10 5.9 6.3 7.1 8.7 9.2

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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15.17 Circuits N and M have the state tables that follow. (a) Without first reducing the tables, determine whether circuits N and M are equivalent. (b) Reduce each table to a minimum number of states, and then show that N is equivalent to M by inspecting the reduced tables. So S₁ S₂ S3 M X = 0 S3 So So So 1 is in ii S₁ 0 S₁ 0 S₂ 1 S3 1 A To uot khi B с E N X = 0 EFEEBB B B 1 ABDCDU А с D T10000
2.11 List the truth table of the function: (a)* F = xy + xy' + y'z (b) F = x'z' + yz 2.12 We can perform logical operations on strings of bits by considering each pair of corresponding bits separately (called bitwise operation). Given two eight-bit strings A = 10110001 and B = 10101100, evaluate the eight-bit result after the following logical operations: (a)* AND, (b) OR, (c)* XOR, (d)* NOT A, (e) NOT B. 2.17 Obtain the truth table of the following functions, and express each function in sum-of-minterms and product-of-maxterms form: (a) (xy + z)(y + xz) (c) x'z + wx'y + wyz' + w'y' (b) (x + y')(y' + z) (d) (xy + yz' + x'z)(x + z) 2.18 For the Boolean function F = xy'z + x'y'z + w'xy + wx'y + wxy (a) Obtain the truth table of F. (b) Draw the logic diagr (c Use Boolean algebra to simplify the function to a minimum number of literals. (d) Obtain the truth table of the function from the simplified expression and show that it is the same as the one in part (a). (e) Draw the logic diagram…
2 Suppose you are given an alphabet consisting of several symbols as well as the frequencies with which the symbols appear. The Huffman code is an encoding of each symbol as a binary string which among all prefix codes minimises the expected length of an encoded text. Your task is to find the lengths of all these binary strings. - Suppose the alphabet consists of the following symbols with given frequencies. Symbol G Frequency 33 H 37 1 39 J 11 K 10 L 31 M 56 N 22 What is the set of codeword lengths in a Huffman code for this alphabet? Select one alternative: O (2,2,3,3,3,4,5,5} {2,2,3,3,4,4,4,4} {2,3,3,3,3,3,4,4} O {2,2,2,3,4,5,6,6}
Objective B.2: Magnitude Comparator Circuits. ae Magnitude Comparator circuit evaluates two bits and tells you if they are equal (A=B), Less Than (AB) The circuit on the next page shows a simple tagintude comparator that can evaluate two bits The unit can be chained to other similar circuits to evaluate two larger binary numbers. 1. Build the circuit shown below and complete the truth table to show correct operation. A Input A Input B Output AB
Perform the following tasks by explaining the process of each one in detail: 1. Converting all numbers by follow between brackets: a. 487.2 from base 10 to [ bases 2,8, 16] b. 11010110 from base 2 to [ base 10 ] c. 456 from base 8 to [ base 10 ] d. 2B6 from base 16 to [ base 10 ] 2. Adding all numbers by follow between brackets: a. The binary numbers: [11010110 + 10000101] b. The octal numbers: [ 456 + 555 ] c. The hexadecimal numbers: [ 2B6 + 12C] 3. Subtracting all numbers by follow between brackets: a. The binary numbers: [ 11010110 - 10000101] b. The octal numbers: [ 555 – 456 ] c. The hexadecimal numbers: [ 2B6 - 12C]
Q2.3 Semaphores for synchronization (Condition variables for signalling) Consider the "belt-and-vat" problem, discussed during workshops. Assume that the primitive functions for sending "go" signals in two pipes are: write(pd_child_to_parent [1],&go_signal, sizeof(int)); write(pd_parent_to_child [1],&go_signal, sizeof(int)); Assume that the primitive functions for receiving "go" signals in two pipes are: read (pd_child_to_parent [0], &go_signal, sizeof(int)); read (pd_parent_to_child[0], &go_signal, sizeof(int)); 2.3.1 Write a piece of pseudo-code which allows two processes, for the belt, and for the vat, to synchronize by sending "go" signals in pipes. -_/6
Q2. 5