IGCSE Computer Science Quiz: Computer Architecture

What is the Von Neumann architecture?

• A computer design model that only uses data memory and no instruction memory

• A computer design model that uses a single memory to store both instructions and data.

• A computer design model that does not use memory to store instructions

• A computer design model that uses separate memory for instructions and data

What is the function of the control unit and ALU in a computer system?

• The control unit coordinates the computer's power supply, while the ALU manages the computer's audio output

• The control unit is responsible for printing documents, while the ALU handles internet connectivity

• The control unit manages the computer's operations and coordinates the activities of the other hardware components, while the ALU performs arithmetic and logical operations.

• The control unit controls the computer's temperature and fan speed, while the ALU manages the storage of data

Describe the fetch-decode-execute cycle in computer architecture.

• The fetch-decode-execute cycle is the process of printing program instructions from memory

• The fetch-decode-execute cycle is the process of deleting program instructions from memory

• The fetch-decode-execute cycle is the process by which a computer retrieves program instructions from memory, decodes them, and then carries out the instructions.

• The fetch-decode-execute cycle is the process of encrypting program instructions from memory

What are the main components of the Von Neumann architecture?

• RAM, monitor, printer, and motherboard

• ALU, registers, input/output devices, and control unit

• GPU, storage, keyboard, and ALU

• Hard drive, scanner, mouse, and cache memory

How do registers and memory work together in a computer system?

• Registers store data and instructions for the computer system, while memory holds temporary data for the CPU to process.

• Memory holds temporary data for the CPU to process, while registers store data and instructions for the computer system.

• Registers and memory do not work together in a computer system.

• Registers hold temporary data for the CPU to process, while memory stores data and instructions for the computer system.

What are the key responsibilities of the control unit in a CPU?

• Controlling the flow of electricity within the CPU

• Managing the input/output devices of the computer

• Generating the graphics for the computer display

• Coordinating the activities of all the other units within the CPU

Explain the role of ALU in performing arithmetic and logical operations.

• It directly communicates with the memory to perform arithmetic and logical operations

• It performs arithmetic and logical operations by executing the instructions provided by the CPU.

• It only performs logical operations, not arithmetic operations

• It has no role in performing arithmetic and logical operations