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Free download in PDF Computer Organization and Architecture Multiple Choice Questions with Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
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+
62
Floating point representation is used to store
[A]
Boolean values
[B]
whole numbers
[C]
real integers
[D]
integers
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
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
66
The circuit used to store one bit of data is known as
[A]
Register
[B]
Encoder
[C]
Decoder
[D]
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
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
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
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
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%
73
In a memory-mapped I/O system, which of the following will not be there?
[A]
LDA
[B]
IN
[C]
ADD
[D]
OUT
74
Von Neumann architecture is
[A]
SISD
[B]
SIMD
[C]
MIMD
[D]
MISD
75
The circuit used to store one bit of data is known as
[A]
Encoder
[B]
OR gate
[C]
Flip Flop
[D]
Decoder
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
77
Cache memory acts between
[A]
CPU and RAM
[B]
RAM and ROM
[C]
CPU and Hard Disk
[D]
None of these
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
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
80
Virtual memory consists of
[A]
Static RAM
[B]
Dynamic RAM
[C]
Magnetic memory
[D]
None of these
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