 A directory of Objective Type Questions covering all the Computer Science subjects. Here you can access and discuss Multiple choice questions and answers for various compitative exams and interviews.

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 81. The logic expression x’yz’ + x’yz + xyz’ + xyz reduces to: a. x’z b. xyz c. y d. yz

 82. Which of the following binary number is the same as its 2’s complement: a. 1010 b. 0101 c. 1000 d. 1001

 83. A V A = A is called: a. Identity law b. De Morgan’s law c. Idempotent law d. Complement law

 84. An example of a binary number which is equal to its 2’s complement is: a. 1100 b. 1001 c. 1000 d. 1111

 85. Suppose x and y are two Integer Variables having values 0x5AB6 and 0x61CD respectively. The result (in hex) of applying bitwise operator AND to x and y will be: a. 0x5089 b. 0x4084 c. 0x78A4 d. 0x3AD1

 86. 1 Kilo Bytes refers to: a. 1000 Bytes b. 1024 Bytes c. 8000 Bytes d. 8192 Bytes
 87. The following Boolean expression is equivalent to  a. 1 b. 2 c. 3 d. 4