Computer Organization Questions and Answers – Basic Operational Concept

This set of Computer Organization and Architecture Multiple Choice Questions & Answers (MCQs) focuses on “Basic Operational Concept”.

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

Answer: a
Explanation: The instruction after obtained from the PC, is decoded and operands are fetched and stored in the IR.

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
View Answer

Answer: c
Explanation: None.

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

Answer: a
Explanation: MAR can interact with secondary storage in order to fetch data from it.
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4. During the execution of a program which gets initialized first?
a) MDR
b) IR
c) PC
d) MAR
View Answer

Answer: c
Explanation: For the execution of a process first the instruction is placed in the PC.

5. Which of the register/s of the processor is/are connected to Memory Bus?
a) PC
b) MAR
c) IR
d) Both PC and MAR
View Answer

Answer: b
Explanation: MAR is connected to the memory BUS in order to access the memory.

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

Answer: a
Explanation: None.

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

Answer: b
Explanation: The processor BUS is used to connect the various parts in order to provide a direct connection to the CPU.
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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 the mentioned
View Answer

Answer: b
Explanation: The multiplexer circuit is used to choose between the two as it can give different results based on the input.

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
View Answer

Answer: d
Explanation: The Operational and processing part of the CPU are collectively called as a data path.
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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 the mentioned
View Answer

Answer: a
Explanation: None.

Sanfoundry Global Education & Learning Series – Computer Organization and Architecture.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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