Download PDF
Free download in PDF Computer Organization and Architecture Short Questions and 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.
41
The addressing mode used in an instruction of the form ADD X Y, is _____.
[A]
Absolute
[B]
indirect
[C]
index
[D]
none of these
42
Von Neumann architecture is ______.
[A]
SISD
[B]
SIMD
[C]
MIMD
[D]
MISD
43
The circuit used to store one bit of data is known as ______.
[A]
Encoder
[B]
OR gate
[C]
Flip Flop
[D]
Decoder
44
Cache memory acts between_______.
[A]
CPU and RAM
[B]
RAM and ROM
[C]
CPU and Hard Disk
[D]
None of these
45
Write Through technique is used in which memory for updating the data _____.
[A]
Virtual memory
[B]
Main memory
[C]
Auxiliary memory
[D]
Cache memory
46
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 circuitry
47
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
48
Virtual memory consists of _______.
[A]
Static RAM
[B]
Dynamic RAM
[C]
Magnetic memory
[D]
None of these
49
In a program using subroutine call instruction, it is necessary______.
[A]
initialize program counter
[B]
Clear the accumulator
[C]
Reset the microprocessor
[D]
Clear the instruction register
Answer: Firms and households.
50
A Stack-organised Computer uses instruction of _____.
[A]
Indirect addressing
[B]
Two-addressing
[C]
Zero addressing
[D]
Index addressing
51
If the main memory is of 8K bytes and the cache memory is of 2K words. It uses associative mapping. Then each word of cache memory shall be_____.
[A]
11 bits
[B]
21 bits
[C]
16 bits
[D]
20 bits
52
Logic X-OR operation of (4ACO)H& (B53F)H results _____.
[A]
AACB
[B]
0000
[C]
FFFF
[D]
ABCD
53
When CPU is executing a Program that is part of the Operating System, it is said to be in _____.
[A]
Interrupt mode
[B]
System mode
[C]
Half mode
[D]
Simplex mode
54
An n-bit microprocessor has_____.
[A]
n-bit program counter
[B]
n-bit address register
[C]
n-bit ALU
[D]
n-bit instruction register
Answer: n-bit instruction register
55
Cache memory works on the principle of_____.
[A]
Locality of data
[B]
Locality of memory
[C]
Locality of reference
[D]
Locality of reference & memory
Answer: Locality of reference
56
In computers, subtraction is carried out generally by____.
[A]
1’s complement method
[B]
2’s complement method
[C]
signed magnitude method
[D]
BCD subtraction method
Answer: 2’s complement method
57
PSW is saved in stack when there is a _____.
[A]
interrupt recognized
[B]
execution of RST instruction
[C]
Execution of CALL instruction
[D]
All the above
Answer: interrupt recognized
58
The multiplicand register & multiplier register of a hardware circuit implementing booth’s algorithm have (11101) & (1100). The result shall be ______.
[A]
(812)10
[B]
(-12)10
[C]
(12)10
[D]
(-812)10
59
The circuit converting binary data in to decimal is_____.
[A]
Encoder
[B]
Multiplexer
[C]
Decoder
[D]
Code converter
60
A three input NOR gate gives logic high output only when_____.
[A]
one input is high
[B]
one input is low
[C]
two input are low
[D]
all input are high
Answer: all input are high
Please share this page