Computer Organization & Architecture MCQs

1. The decoded instruction is stored in ______ .
a) IR
b) PC
c) Registers
d) MDR

Answer:a

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2. The instruction -> Add LOCA,R0 does,
a) Adds the value of LOCA to R0 and stores in the temp register
b) Adds the value of R0 to the address of LOCA
c) Adds the values of both LOCA and R0 and stores it in R0
d) Adds the value of LOCA with a value in accumulator and stores it in R0

Answer:c

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3. Which registers can interact with the secondary storage ?
a) MAR
b) PC
c) IR
d) R0

Answer:a

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4. During the execution of a program which gets initialized first ?
a) MDR
b) IR
c) PC
d) MAR

Answer:c

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5. Which of the register/s of the processor is/are connected to Memory Bus ?

a) PC
b) MAR
c) IR
d) Both a and b

Answer:b

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6. ISP stands for,
a) Instruction Set Processor
b) Information Standard Processing
c) Interchange Standard Protocol
d) Interrupt Service Procedure

Answer:a

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7. The internal Components of the processor are connected by _______ .
a) Processor intra-connectivity circuitry
b) Processor bus
c) Memory bus
d) Rambus

Answer:b

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8. ______ is used to choose between incrementing the PC or performing ALU operations .
a) Conditional codes
b) Multiplexer
c) Control unit
d) None of these

Answer:b

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9. The registers,ALU and the interconnection between them are collectively called as _____ .

a) Process route
b) Information trail
c) information path
d) data path

Answer:d

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10. _______ is used to store data in registers .
a) D flip flop
b) JK flip flop
c) RS flip flop
d) none of these
Answer:a

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