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

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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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