Computer Organization and Architecture MCQs

#1. Which of the following represents the correct order of stages in the instruction execution cycle of a CPU?

1. Fetch, Decode, Execute

2. Decode, Fetch, Execute

3. Execute, Fetch, Decode

4. Decode, Execute, Fetch

5. Fetch, Execute, Decode

#2. In computer architecture, what is the role of the memory address register (MAR)?

1. To store the result of an arithmetic operation

2. To store the address of the data to be accessed

3. To store the current instruction

4. To store the program counter value

5. None of the above

#3. What is the purpose of the memory buffer register (MBR) in a computer system?

1. To store data temporarily

2. To store the result of an arithmetic operation

3. To store the address of data

4. To store the program counter value

5. None of the above

#4. In computer architecture, what does the term “big-endian” refer to?

1. A system in which the most significant byte is stored at the lowest memory address

2. A system in which the least significant byte is stored at the lowest memory address

3. A system in which data is stored in a random order

4. A system in which data is stored sequentially

5. None of the above

#5. What is the purpose of a memory map in computer systems?

1. To display a visual representation

2. To store data temporarily

3. To store addresses of memory locations

4. To organize memory addresses

5. To map data to specific memory locations

#6. In computer architecture, what does the term “pipeline stall” refer to?

1. A delay in the pipeline stages

2. A blockage in the data bus

3. A failure in the CPU cooling system

4. A malfunction in the ALU

5. None of the above

#7. What is the primary function of a memory cache in a computer system?

1. To store data temporarily

2. To provide additional storage for large files

3. To improve memory access speed

4. To store the operating system kernel

5. To prevent unauthorized access to data

#8. What does the term “clock speed” refer to in computer architecture?

1. The speed of the data bus

2. The speed of the hard disk

3. The speed of the system bus

4. The speed of the CPU processing cycles

5. The speed of the printer

#9. In computer architecture, what is the role of the program counter (PC)?

1. To store the current instruction

2. To store the result of an arithmetic operation

3. To store the memory address of data to be accessed

4. To store the system clock value

5. None of the above

#10. What is the purpose of the memory data register (MDR) in a computer system?

1. To store the current instruction

2. To store the result of an arithmetic operation

3. To store the data to be read from or written to memory

4. To store the program counter value

5. None of the above

#11. In computer architecture, what is the function of the instruction register (IR)?

1. To store the program counter value

2. To store the result of an arithmetic operation

3. To store the current instruction

4. To store the memory address of data

5. None of the above

#12. What does the term “interrupt” refer to in computer systems?

1. A request for CPU attention

2. A type of memory error

3. A malfunction in the hard disk

4. A failure in the power supply

5. None of the above

#13. In computer architecture, what is the purpose of an interrupt vector?

1. To store memory addresses for interrupts

2. To store the result of an arithmetic operation

3. To store the CPU clock frequency

4. To store the program counter value

5. None of the above

#14. What is the function of the interrupt service routine (ISR) in a computer system?

1. To manage input/output operations

2. To handle interrupts by executing specific tasks

3. To store the interrupt vector addresses

4. To manage memory operations

5. None of the above

#15. In computer architecture, what is the purpose of the system clock?

1. To display the current time

2. To measure the CPU temperature

3. To synchronize operations of various components

4. To control the computer fan speed

5. None of the above

#16. What is the role of a digital signal processor (DSP) in computer systems?

1. To process digital audio and video signals

2. To process paper documents

3. To handle human-machine interactions

4. To process analog audio and video signals

5. None of the above

#17. What does the term “I/O port” stand for in computer systems?

1. Input/Output Port

2. Instruction/Output Port

3. Internal/Output Port

4. Interrupt/Output Port

5. Integrated/Output Port

#18. What is the purpose of the memory controller in a computer system?

1. To manage the main memory

2. To control input devices

3. To manage cache memory

4. To control output devices

5. None of the above

#19. In computer systems, what is the function of a northbridge chip?

1. To handle graphics and memory

2. To handle storage devices and peripherals

3. To manage the network connections

4. To manage power supply

5. None of the above

#20. What does the term “RAID” stand for in computer storage technology?

1. Redundant Array of Independent Disks

2. Random Access Independent Disk

3. Rapid Array of Integrated Drives

4. Read-Only Array of Internal Drives

5. Remote Access Independent Disk

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#1. Which of the following represents the correct order of stages in the instruction execution cycle of a CPU?

#2. In computer architecture, what is the role of the memory address register (MAR)?

#3. What is the purpose of the memory buffer register (MBR) in a computer system?

#4. In computer architecture, what does the term “big-endian” refer to?

#5. What is the purpose of a memory map in computer systems?

#6. In computer architecture, what does the term “pipeline stall” refer to?

#7. What is the primary function of a memory cache in a computer system?

#8. What does the term “clock speed” refer to in computer architecture?

#9. In computer architecture, what is the role of the program counter (PC)?

#10. What is the purpose of the memory data register (MDR) in a computer system?

#11. In computer architecture, what is the function of the instruction register (IR)?

#12. What does the term “interrupt” refer to in computer systems?

#13. In computer architecture, what is the purpose of an interrupt vector?

#14. What is the function of the interrupt service routine (ISR) in a computer system?

#15. In computer architecture, what is the purpose of the system clock?

#16. What is the role of a digital signal processor (DSP) in computer systems?

#17. What does the term “I/O port” stand for in computer systems?

#18. What is the purpose of the memory controller in a computer system?

#19. In computer systems, what is the function of a northbridge chip?

#20. What does the term “RAID” stand for in computer storage technology?

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