Computer Organization and Architecture Quiz | Computer Organization and Architecture Multiple Choice Questions with Answers

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Questions
61 In Reverse Polish notation, expression A*B+C*D is written as
A AB*CD*+
B A*BCD*+
C AB*CD+*
D A*B*CD+

Answer: AB*CD*+
62 Floating point representation is used to store
A Boolean values
B whole numbers
C real integers
D integers

Answer: real integers
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63 Assembly language
A uses alphabetic codes in place of binary numbers used in machine language
B is the easiest language to write programs
C need not be translated into machine language
D None of these

Answer: uses alphabetic codes in place of binary numbers used in machine language
64 In computers, subtraction is generally carried out by
A 9’s complement
B 10’s complement
C 1’s complement
D 2’s complement

Answer: 2’s complement
65 What characteristic of RAM memory makes it not suitable for permanent storage?
A too slow
B unreliable
C it is volatile
D too bulky

Answer: it is volatile
66 The circuit used to store one bit of data is known as
A Register
B Encoder
C Decoder
D Flip Flop

Answer: Flip Flop
67 The average time required to reach a storage location in memory and obtain its contents is called the
A seek time
B turnaround time
C access time
D transfer time

Answer: access time
68 Which of the following is not a weighted code?
A Decimal Number system
B Excess 3-cod
C Binary number System
D None of these

Answer: Excess 3-cod
69 The idea of cache memory is based
A on the property of locality of reference
B on the heuristic 90-10 rule
C on the fact that references generally tend to cluster
D all of the above

Answer: on the property of locality of reference
70 Which of the following is lowest in memory hierarchy?
A Cache memory
B Secondary memory
C Registers
D RAM

Answer: Secondary memory
71 The addressing mode used in an instruction of the form ADD X Y, is
A Absolute
B indirect
C index
D none of these

Answer: index
72 If memory access takes 20 ns with cache and 110 ns with out it, then the ratio (cache uses a 10 ns memory) is
A 93%
B 90%
C 88%
D 87%

Answer: 90%
73 In a memory-mapped I/O system, which of the following will not be there?
A LDA
B IN
C ADD
D OUT

Answer: LDA
74 Von Neumann architecture is
A SISD
B SIMD
C MIMD
D MISD

Answer: SISD
75 The circuit used to store one bit of data is known as
A Encoder
B OR gate
C Flip Flop
D Decoder

Answer: Flip Flop
76 Write Through technique is used in which memory for updating the data
A Virtual memory
B Main memory
C Auxiliary memory
D Cache memory

Answer: Cache memory
77 Cache memory acts between
A CPU and RAM
B RAM and ROM
C CPU and Hard Disk
D None of these

Answer: CPU and RAM
78 Generally Dynamic RAM is used as main memory in a computer system as it
A Consumes less power
B has higher speed
C has lower cell density
D needs refreshing circuitary

Answer: has higher speed
79 In signed-magnitude binary division, if the dividend is (11100) 2 and divisor is (10011) 2 then the result is
A (00100) 2
B (10100) 2
C (11001) 2
D (01100) 2

Answer: (10100) 2
80 Virtual memory consists of
A Static RAM
B Dynamic RAM
C Magnetic memory
D None of these

Answer: Static RAM

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