Computer Organization & Architecture MCQ Set -2 | Computer Organization and Architecture mcq with Answers

Computer Organization and Architecture mcq with Answers  Set -2

Computer Organization and Architecture mcq with Answers : Here we provide best computer organisation and architecture mcq.We also enclose computer architecture and organization mcqs pdf.This computer organisation and architecture mcq will be help for your computer science studies,Anyone preparing for Aptitude test in Computer Organization & Architecture,school students, entrance examinations and other competitive examinations or any other job preparation.Mcq on computer organization and architecture is a important part of computer science stuies because today's all exam are online base and they prefare mutiple choice question.Here we provide list of 30 multiple choice questions computer organization and architecture.You can also get more set of computer organisation and architecture mcq questions by clicking the of 30 question.

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Computer Organization and Architecture mcqs :

1. With 2's Complement representation, the range of values that can be represented on the data bus of an 8 bit micro-processor is given by

A) -128 to +127
B) -128 to 128 
C) -127 to 128
D) -256 to + 256

ANSWER= (A) -128 to +127

 

2. The circuit used to store one bit of data is known as

A) Register
B) Encoder
C) Decoder
D) Flip Flop

ANSWER= (D) Flip Flop

 

3.  Cache memory acts between

A)  CPU and RAM
B) RAM and ROM
C) CPU and Hard Disk
D)  None of these

ANSWER= (A)  CPU and RAM

 

4. Normally digital computers are based on

A) AND and OR gates
B) NAND and NOR gates
C) Not gate
D) None of these

ANSWER= (B) NAND and NOR gates

 

5. When signed numbers are used in binary arithmetic, then which one of the following notations would have unique representation for zero ? 

A) Sign Magnitude
B) 1's complement
C) 2's complement
D)  none

ANSWER= (C) 2's complement

 

6. Which of the following statements is wrong?

A) Propagation delay is the time required for a gate to change its state.
B) The noise immunity is the amount of noise that can be applied to the input of agate without causing the gate to change state.
C) Fan-in of a gate is always equal to fan-out of the same gate
D)  Operating speed is the maximum frequency at which digital data can be applied to a gate.

ANSWER= (C) Fan-in of a gate is always equal to fan-out of the same gate

 

7. Which of the following logic families has the maximum functional capacity?

A) VLSI
B) LSI
C) MSI
D) SSI

ANSWER= (A)  VLSI

 

8.Subtractor can be implemented using

A) adder 
B) complementer
C) both (a) & (b) 
D)  none of these

ANSWER= (C)  both (a) & (b) 

 

9.  Floating point representation is used to store ______.

A) Boolean values
B) whole numbers
C) real integers
D)  integers

ANSWER= (C) real integers

 

10.What characteristic of read-only memory (ROM) makes is useful?

A) ROM chips are easily swapped between different brands of computers
B) ROM provides very large amounts of inexpensive data storage
C) Data in ROM is nonvolatile, that is, it remains there even without electrical power
D) ROM information can be easily updated

ANSWER= (C) Data in ROM is nonvolatile, that is, it remains there even without electrical power

 

11. Maximum n bit 2's complement number is 

A) 2" 
B)  2"-1 
C) 2n-1-1
D) Cannot be said

ANSWER= (C) 2n-1-1

 

12. In computer terminology, the term wetware stands for

A) Any organic intelligence
B) Speech recognition
C) Molecular scale computer
D) Artificial intelligence

ANSWER= (A) Any organic intelligence

 

13. Adding 011011012 to 101000102 in 8-bit 2's complement binary will cause an overflow:

A) True
B) False

ANSWER= (B) False

 

14. Cray-11 is a

A) Super computer
B)Main frame computer
C)  Mini computer
D) Micro computer

ANSWER= (A) Super computer

 

15.___ is used to reduce cache hit time.

A) Giving priority to read misses overwrite
B) Early restart and critical word first
C)  Avoiding address translation during cache indexing
D) Pseudo-associative caches

ANSWER= (C)  Avoiding address translation during cache indexing

 

16. In Reverse Polish notation, expression A*B+C*D is written asscussion

A) AB*CD*+
B) A*BCD*+
C) AB*CD+*
D) A*B*CD+

ANSWER= (A) AB*CD*+

 

17. The conversion of (FAFAFA)16 into octal form is

A)76767676
B) 76575372
C) 76737672
D) 76727672

ANSWER= (B) 76575372

 

18. 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= (B) (10100) 2

 

19. In a J-K Flip Flop the function K=J' is used to realize

A)  T-Flip-Flop
B) S-R Flip-Flop
C) D-Flip-Flop
D) M/S J-K Flip-Flop

ANSWER= (A) T-Flip-Flop

 

20.Which logic gate has the highest speed? 

A) ECL
B) TTL
C) RTL
D) DTL

ANSWER= (C) RTL

 

21. 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= (B) has higher speed

 

22.Logic families of IC having dense packing density, simpler processing techniques and more economic operations are :

A)  TTL
B) ECL
C) CMOS
D)  None of the above

ANSWER= (C) CMOS

 

23. 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= (D) Cache memory
EXPLAIN- CMOS (Complementary Metal Oxide Semi-Conductor) uses PMOS and NMOS transistors which are connected in a complementary fashion in all circuits and provides high packing density with simpler precessing technique & more economic operation.

 

24.Using an additional NOT gate, a JK flip-flop can be converted into

A) T flip-flop
B) RS flip-flop
C) Master Slave flip-flop
D) D flip-flop

ANSWER= (C) Master Slave flip-flop

 

25. Booth's algorithm for computer arithmetic is used for

A)  multiplication of numbers in sign magnitude form
B)  multiplication of numbers in 2's complement form 
C) division of numbers in sign magnitude form
D) division of numbers in 2's complement form

ANSWER= (B)  multiplication of numbers in 2's complement form 

 

26. RTL stands for:

A) Random transfer language
B)  Register transfer language
C)Arithmetic transfer language
D)  All of these

ANSWER= (B)  Register transfer language

 

27.Sequential computer was improved from bit-serial to-

A)  Bit-parallel
B)  Byte serial
C) Word-parallel
D) None of the above

ANSWER= (C)  Word-parallel

 

28 Von Newmann architecture is slow due to the ___ execution of instructions in a program.

A) Sequential
B) . Parallel
C) Non-execution
D) None of the above

ANSWER= (A) Sequential

 

29. The conversion (FAFAFB) 16 into octal form is

A) 76767676
B) 76575372
C) 76737672
D) None of these

ANSWER= (D) None of these

 

30.Fetch operations are not required in

A) direct addressing
B) indirect addressing
C) immediate addressing
D) register addressing

ANSWER= (C) immediate addressing

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