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Computer Organization and Architecture Quiz | Computer Organization and Architecture Objective Type Questions and Answers

Questions
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

Answer: 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
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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

Answer: word 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

Answer: Longer than
27 CPU does not perform the operation ………………
A data transfer
B logic operation
C arithmetic operation
D all of the above

Answer: data transfer
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

Answer: J.M.Keynes
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

Answer: bus
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

Answer: STA and LDA
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

Answer: 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+

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

Answer: real 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

Answer: 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

Answer: 2’s complement

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