What mask value will make the expression true when applying bitwise inclusive OR (|)? 10011001 11101100 10101010 11001100 ???????? ???????? ???????? ???????? ----------------------------------- 11111111 11101111 10101010 11001111 Express the mask as an 8 digit hexadecimal number.

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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  • For each number, perform the following bitwise operations.
    • You don't have to show work for each conversion.
  • Format your answers in the following ways, points will be deducted if answers are not formatted correctly.
    • Answers are numbered.
    • Write all hexadecimal numbers using the 0x notation to differentiate between other number systems.
    • Write all binary numbers in groups of 4 bits XXXX XXXX or groups of 8 bits XXXXXXXX
  1. What mask value will make the expression true when applying bitwise inclusive OR (|)?
    10011001 11101100 10101010 11001100
    ???????? ???????? ???????? ????????
    -----------------------------------
    11111111 11101111 10101010 11001111

    Express the mask as an 8 digit hexadecimal number.

  2. Given the following:
    unsigned int result = 0;
    unsigned int num1 = 0x41;
    unsigned int num2 = 0x78;
    unsigned int num3 = 0x43;
    unsigned int num4 = 0x7A;

    result = (num1 << 24);
    result = result | (num4 << 16);
    result = result | (num2 << 8);
    result = result | num3;

    A) Express the value of result after the above operations as an 8 digit hexadecimal number. You can create a program and use the printbits function to help verify your answer.

    B) What do you notice about the result in relation to the starting numbers?

 

Please answer 1 and 2

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