Number System | Data Representation - Computer Architecture MCQs and Answers

(1) Octal equivalent of hexadecimal code, F3A1 is

[A] 173101

[B] 176541

[C] 171641

[D] 158661

Answer: Option [C]

1111 0011 1010 0001 i.e. F3A1

001 111 001 110 100 001 i.e. 171641

(2) An 8-bit binary word b₇b₆b₅b₄b₃b₂b₁b₀ as an integer x ranges from

[A] -128 to 128

[B] -128 to 127

[C] -256 to 256

[D] None of the above

Answer: Option [B]

(3) The binary equivalent of the decimal number 0.4375 is

[A] 0.0111

[B] 0.1011

[C] 0.1100

[D] 0.1010

Answer: Option [A]

(4) Decimal equivalent of the binary number 101001.1011 is

[A] 41.0875

[B] 40.6875

[C] 41.6875

[D] 40.0875

Answer: Option [C]

1 x 2⁵ + 0 x 2⁴ + 1 x 2³ + 0 x 2² + 0 x 2¹ + 1 x 2⁰.1 x 2^-1 + 0 x 2^-2 + 1 x 2^-3 + 1 x 2^-4 = 41.6875

(5) Octal number system is

[A] A positional system with weights 0 to 9

[B] A positional system with weights 0 to 8

[C] A positional system with weights 0 to 7

[D] A non positional system with weights 0 to 7

Answer: Option [C]

A positional system with weights 0 to 7

Data Representation | Computer System Architecture MCQs with Answers