Consider a sequence of symbols ABCDE. The sequence can only start with A or B or C or D. Suppose that A is followed by B or C B is followed by C or D C is always followed by A D is followed by A or B or C or E E is followed by A or B. Given the conditions above, determine the binary code for following sequence of symbols: CACABDCABDEB Select one: O a. 101011001111 O b. 101111001111 O c. 101011001011 O d. None of the options

Consider a sequence of symbols ABCDE. The sequence can only start with A or B or C or D. Suppose that A is followed by B or C B is followed by C or D C is always followed by A D is followed by A or B or C or E E is followed by A or B. Given the conditions above, determine the binary code for following sequence of symbols: CACABDCABDEB Select one: O a. 101011001111 O b. 101111001111 O c. 101011001011 O d. None of the options

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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A string is called a palindrome if it reads the same when reversed. That is, the string x1 x2 ... xn is a palindrome if x1 x2 ... xn = xn ... x2 x1. The bit strings 11011 and 01011010 are palindromes.The bit strings 1011 and 01111 are not. How many bit-strings of length 7 are palindromes?
Consider the code C={00010, 01100,01011,11010,01010}. What is the minimum distance of C? For what k is the code C k-error detecting? Write the set of error patterns that C can detect?
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Suppose you have a finite state machine that accepts bit strings divisible by 11. The FSM has 11 states R0, R1, ... , R10, each corresponding to the remainder when dividing by 11. Input is fed to the FSM one bit at a time from left to right, the same way we did in our in-class examples. If the machine is currently in state R7, an input of 1 should transition it to which state? Type the subscript only of the new state. Your answer should be an integer between 0 and 10, inclusive.
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Compute the weakest precondition for each of the following assignmentstatements and postconditions:1. a = 2 * (b - 1) - 1 {a > 0}2. b = (c + 10) / 3 {b > 6}3. a = a + 2 * b - 1 {a > 1}4. x = 2 * y + x - 1 {x > 11}