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Important questions about Computer System Architecture - Data Representation. Computer System Architecture - Data Representation MCQ questions with answers. Computer System Architecture - Data Representation exam questions and answers for students and interviews.

1. Even parity is being used for error checking computer data. If data word to be transmitted is 0101 0111, the value of the parity will be

Options

A : 0

B : 1

C : 1 or 0

D : 00

2. The ASCII

Options

A : is a subset of 8-bit EBCDIC

B : is used only in Western Countries

C : Both (a) and (b)

D : has 128 character, including 32 control characters

3. The sign magnitude representation of binary number + 1101.011 is

Options

A : 01101.011

B : 11101.011

C : 00110.100

D : 10010.100

4. What is the equivalent of (10110011100011110000)2 n base 32?

Options

A : 11 9 23 31

B : 22 14 7 16

C : 11 9 7 16

D : 11 14 23 16

5. A computer with a 32-bit word size uses 2's complement to represent numbers. The range of integers that can be represented by this computer is

Options

A : - 2 32 to 2 32

B : -2 32 to 2 31

C : -2 31 to 2 31 -1

D : —2 32 to 2 31

46. How many 1's are present in the binary representation of 15 x 256 + 5 x 16 + 3 is

Options

A : 8

B : 9

C : 7

D : 11

47. What is the 2's complement representation of -5/8?

Options

A : 0.1010

B : 1.0111

C : -0.1101

D : 1.0110

48. The result of the subtraction FD 16 - 88 16 is

Options

A : 75 16

B : 65 16

C : 5E 16

D : 10 16

49. The result of the addition (A0) 16 + (613) 16 is

Options

A : (6B3) 16

B : (16 B) 16

C : (A0B) 16

D : (A6B) 16

50. The 1's complements of the binary number 1101101 is

Options

A : 0000010

B : 0010010

C : 0010011

D : 1100011

51. Two's complement can be obtained from one's complement by

Options

A : adding 1

B : subtracting 1

C : putting 1 as the leading bit

D : None of these

52. The ASCII code is

Options

A : Numeric code

B : Same as BCD code

C : An alphanumeric code

D : Seldom used

53. Which code is a weighted code

Options

A : Gray

B : Excess-3

C : BCD code

D : 5111

54. The octal equivalent of decimal 324.987 is

Options

A : 504.771

B : 540.781

C : 215.234

D : 345.346

55. What is the decimal equivalent of hexadecimal number 566?

Options

A : 1382

B : 1582

C : 1192

D : 1882

56. The binary equivalent of the octal numbers 13.54 is

Options

A : 1011.1011

B : 1101.1110

C : 1000.1110

D : all of these

57. The octal equivalent of 111 010 is

Options

A : 81

B : 72

C : 71

D : all of these

58. Consider excess-3 code that is used to represent integers 0 through 9 as shown below :

Options

A : b' . c' . d' + c . d

B : b' . c' . d' + a . c . d

C : b' . c' . d' + b . c . d + a . c . d + b' . c' . d'

D : b' . c' . d' + b . c . d + a . c . d

59. In 2's complement addition , overflow

Options

A : is flagged whenever there is carry from sign bit addition

B : cannot occue when a positive value is added to a negative value

C : is flagged when the carries from sign bit and previous bit match

D : none of these

6. A decimal number has 25 digits. The number of bits needed for its equivalent binary representation is, approximately

Options

A : 50

B : 55

C : 85

D : 80

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