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Free download in PDF Computer Organization and Architecture Objective Type 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.
(21)
Which of the following registers is used to keep track of address of the memory location where the next instruction is located?
[A]
Memory Address Register
[B]
Memory Data Register
[C]
Instruction Register
[D]
Program Register
(22)
Data hazards occur when ……
[A]
Greater performance loss
[B]
Pipeline changes the order of read/write access to operands
[C]
Some functional unit is not fully pipelined
[D]
Machine size is limited
Answer: Pipeline changes the order of read/write access to operands
(23)
A pipeline is like ………………..
[A]
an automobile assembly line
[B]
house pipeline
[C]
both a and b
[D]
a gas line
Answer: an automobile assembly line
(24)
A microprogram written as string of 0’s and 1’s is a ………….
[A]
Symbolic microinstruction
[B]
binary microinstruction
[C]
symbolic microinstruction
[D]
binary microprogram
Answer: binary microprogram
(25)
Memory address refers to the successive memory words and the machine is called as …………
[A]
word addressable
[B]
byte addressable
[C]
bit addressable
[D]
Tera byte addressable
(26)
The access time of memory is …………… the time required for performing any single CPU operation.
[A]
Longer than
[B]
Shorter than
[C]
Negligible than
[D]
Same as
(27)
CPU does not perform the operation ………………
[A]
data transfer
[B]
logic operation
[C]
arithmetic operation
[D]
all of the above
(28)
PC Program Counter is also called ……………….
[A]
instruction pointer
[B]
memory pointer
[C]
data counter
[D]
file pointer
Answer: instruction pointer
(29)
A complete microcomputer system consist of ………..
[A]
microprocessor
[B]
memory
[C]
peripheral equipment
[D]
all of the above
(30)
A collection of lines that connects several devices is called …………..
[A]
bus
[B]
peripheral connection wires
[C]
Both a and b
[D]
internal wires
31
Memory access in RISC architecture is limited to instructions
[A]
CALL and RET
[B]
PUSH and POP
[C]
STA and LDA
[D]
MOV and JMP
32
Which of the following code is used in present day computing was developed by IBM corporation?
[A]
ASCII
[B]
Hollerith Code
[C]
Baudot code
[D]
EBCDIC code
33
Pipeline implement
[A]
fetch instruction
[B]
decode instruction
[C]
fetch operand
[D]
calculate operand
Answer: calculate operand
34
What is meant by a dedicated computer?
[A]
which is used by one person only
[B]
which is assigned to one and only one task
[C]
which does one kind of software
[D]
which is meant for application software only
Answer: which is meant for application software only
35
What is the control unit’s function in the CPU?
[A]
To transfer data to primary storage
[B]
to store program instruction
[C]
to perform logic operations
[D]
to decode program instruction
Answer: to decode program instruction
36
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+
37
Floating point representation is used to store ______.
[A]
Boolean values
[B]
whole numbers
[C]
real integers
[D]
integers
38
Suppose that a bus has 16 data lines and requires 4 cycles of 250 nsecs each to transfer data. The bandwidth of this bus would be 2 Megabytes/sec. If the cycle time of the bus was reduced to 125 nsecs and the number of cycles required for transfer stayed the same what would the bandwidth of the bus?
[A]
1 Megabyte/sec
[B]
4 Megabytes/sec
[C]
8 Megabytes/sec
[D]
2 Megabytes/sec
39
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
40
In computers, subtraction is generally carried out by ______.
[A]
9’s complement
[B]
10’s complement
[C]
1’s complement
[D]
2’s complement
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