Trivia Questions On Central Processing Unit! Quiz
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Are you familiar with the central processing unit? It is the major part of any computer system, and it is generally arranged by the main memory, control unit, or arithmetic logic unit. It represents the center of the entire computer system. It is connected to various peripheral equipment, which includes input and output devices. This magnificent quiz is all ready for you to discover new things about the central processing unit.
- 1.
The CPU speed is largely dependent on
- A.
Wordlength, Cache Memory and Clock Speed
- B.
Wordlength only
- C.
Cache Memory and Wordlength only
- D.
Wordlength and Clock Speed only
Correct Answer
A. Wordlength, Cache Memory and Clock SpeedExplanation
The CPU speed is largely dependent on three factors: wordlength, cache memory, and clock speed. Wordlength refers to the number of bits that can be processed by the CPU in a single instruction, with a larger wordlength allowing for more data to be processed at once. Cache memory is a small, fast memory that stores frequently accessed data, reducing the need to fetch data from slower main memory. Lastly, clock speed determines how many instructions the CPU can execute per second, with a higher clock speed resulting in faster processing. Therefore, all three factors contribute to the overall speed of the CPU.Rate this question:
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- 2.
A CPU's wordlength is
- A.
The number of bits on that CPU's databus
- B.
The number of bits the CPU can send and receive at a go
- C.
The number of bits the CPU can process at a go
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
The wordlength of a CPU refers to the number of bits it can process, send and receive at a go, as well as the number of bits on its databus. Therefore, all the given options accurately describe the wordlength of a CPU.Rate this question:
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- 3.
A CPU register
- A.
Is also known as Cache Memory
- B.
Is also known as accumulator
- C.
Is a temporary storage location
- D.
Can hold a maximum of 32 bits
Correct Answer
C. Is a temporary storage locationExplanation
A CPU register is a temporary storage location where data is stored temporarily during the execution of a program. It is a small, high-speed memory unit located within the CPU. Registers are used to hold instructions, data, and addresses that are frequently accessed by the CPU. They provide fast access to data, which helps in improving the overall performance of the CPU. Registers are an essential component of the CPU architecture and play a crucial role in the execution of instructions.Rate this question:
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- 4.
Given a 32-bit CPU, how many words are there in 'processor'?
- A.
1
- B.
3
- C.
9
- D.
2
Correct Answer
B. 3Explanation
'processor' has 9 letters. Each letter requires 1 byte (8 bits).
Hence bits needed: 9 x 8 = 72
72/32 = 2 remainder 8 bits.
Hence 3 words (becase 2 are not enough)Rate this question:
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- 5.
Which of the following are registers?
- A.
Accumulator
- B.
Program Counter, Instruction Register
- C.
Shift Register
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
The correct answer is "All of the above." The explanation is that all the options listed - Accumulator, Program Counter, Instruction Register, and Shift Register - are examples of registers. A register is a small amount of fast memory that is built into the CPU (Central Processing Unit) and is used to store data temporarily during processing. These registers play a crucial role in the execution of instructions and the overall functioning of a computer system. Therefore, all the options mentioned in the question are registers.Rate this question:
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- 6.
The Address Bus
- A.
Determines the number of memory locations that can be directly acessed by the CPU
- B.
Carries data between the CPU and main memory
- C.
Is a two-way bus
- D.
All of the above are true
Correct Answer
A. Determines the number of memory locations that can be directly acessed by the CPUExplanation
The address bus determines the number of memory locations that can be directly accessed by the CPU. This is because the address bus carries the memory addresses, which specify the location of data in the main memory. Therefore, the CPU can only directly access the memory locations that are within the range defined by the width of the address bus.Rate this question:
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- 7.
What is address space?
- A.
It is a general purpose register
- B.
It is the amount of RAM installed
- C.
It is the number of memory locations that can be accessed by the CPU and is determined by the number of lines on the address bus
- D.
It is the number of bits on the address bus
Correct Answer
C. It is the number of memory locations that can be accessed by the CPU and is determined by the number of lines on the address busExplanation
Remember that address space refers to the maximum number of locations in memory the CPU can access.Rate this question:
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- 8.
What is the function of the Control Unit?
- A.
It is a temporary storage location inside the CPU
- B.
It is a section of CPU responsible for all transfer of data between CPU and other components and for fetching, decoding and executing instructions
- C.
It is a special purpose register
- D.
All of the above
Correct Answer
B. It is a section of CPU responsible for all transfer of data between CPU and other components and for fetching, decoding and executing instructionsExplanation
The control unit is responsible for coordinating and controlling all the activities within the CPU. It manages the flow of data between the CPU and other components, such as memory and input/output devices. Additionally, it is responsible for fetching instructions from memory, decoding them, and executing them. Therefore, the correct answer states that the control unit is a section of the CPU that handles data transfer and instruction execution.Rate this question:
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- 9.
What is the role of the Program Counter during the Fetch-Execute cycle?
- A.
It holds the next instruction to be executed
- B.
It holds the address of the next instruction to be executed
- C.
It fetches the next instruction
- D.
It decodes instructions
Correct Answer
B. It holds the address of the next instruction to be executedExplanation
The Program Counter in the Fetch-Execute cycle is responsible for holding the address of the next instruction to be executed. It acts as a pointer to the memory location where the next instruction is stored. By holding the address, the Program Counter allows the processor to fetch the instruction from memory and execute it in the next step of the cycle.Rate this question:
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- 10.
The databus
- A.
Is a bus connecting CPU and main memory that can carry data between them
- B.
Is a two-way bus
- C.
Both of the above are true
- D.
None of the above are true
Correct Answer
C. Both of the above are trueExplanation
The statement "both of the above are true" means that both options mentioned in the question are correct. The databus is indeed a bus that connects the CPU and main memory, allowing them to exchange data. Additionally, it is a two-way bus, meaning that data can be transferred in both directions between the CPU and main memory.Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
ProProfs Editorial Team -
Nov 08, 2009Quiz Created by
Marlenegalea
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