CPU (Central Processing Unit) MCQs
Practice CPU MCQs with answers and explanations covering ALU, CU, registers, processors and central processing unit concepts frequently asked in competitive exams.
Question #11
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The combination of ALU and CU forms the:
Correct Answer: Option B
Explanation:
ALU and CU, along with registers, constitute the CPU.
ALU and CU, along with registers, constitute the CPU.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #12
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Registers are faster than:
Correct Answer: Option C
Explanation:
Registers are the fastest storage in the computer hierarchy, located inside the CPU.
Registers are the fastest storage in the computer hierarchy, located inside the CPU.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #13
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What does the Control Unit do during the decode phase?
Correct Answer: Option B
Explanation:
Decoding involves interpreting the instruction to determine the required action.
Decoding involves interpreting the instruction to determine the required action.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #14
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Which register temporarily holds data being processed by the ALU?
Correct Answer: Option A
Explanation:
The Accumulator is commonly used to hold operands and results of ALU operations.
The Accumulator is commonly used to hold operands and results of ALU operations.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #15
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The speed of a CPU is measured in:
Correct Answer: Option A
Explanation:
CPU clock speed is measured in Hertz, indicating cycles per second.
CPU clock speed is measured in Hertz, indicating cycles per second.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #16
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Cache memory is placed between:
Correct Answer: Option D
Explanation:
Cache provides faster access to frequently used data between CPU and main memory.
Cache provides faster access to frequently used data between CPU and main memory.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #17
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The fetch-decode-execute cycle is also known as the:
Correct Answer: Option D
Explanation:
It represents the basic operational cycle of the CPU for processing instructions.
It represents the basic operational cycle of the CPU for processing instructions.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #18
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Which unit coordinates the activities of all other units in the CPU?
Correct Answer: Option D
Explanation:
The Control Unit directs the overall operation of the processor.
The Control Unit directs the overall operation of the processor.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #19
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A 64-bit processor can handle data in:
Correct Answer: Option C
Explanation:
Bit width indicates the amount of data the processor can process at once.
Bit width indicates the amount of data the processor can process at once.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #20
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The main function of the CPU is to:
Correct Answer: Option C
Explanation:
The CPU carries out instructions of computer programs through processing.
The CPU carries out instructions of computer programs through processing.
This question belongs to:
Computer
CPU (Central Processing Unit)
