Quiz Title: Systems Architecture - OCR GCSE Computer Science

What is the purpose of the Central Processing Unit (CPU)?

• To execute instructions and process data.
• To store data.
• To manage files.
• To transfer data between devices.

What does the term 'clock speed' refer to?

• The number of instructions the CPU can execute per second.
• The amount of RAM installed in the system.
• The power consumption of the CPU.
• The speed at which data is transferred between devices.

What is the function of the Arithmetic Logic Unit (ALU) in the CPU?

• To perform arithmetic and logical operations.
• To store frequently used instructions.
• To manage system memory.
• To communicate with external devices.

What is cache memory?

• A small, high-speed memory located in the CPU to store frequently used data.
• A storage device used to save files.
• A type of external memory.
• A part of the operating system.

What is the purpose of the Control Unit (CU) in the CPU?

• To manage and coordinate the activities of the CPU.
• To store data permanently.
• To handle network communication.
• To execute arithmetic calculations.

What does 'volatile memory' mean?

• Memory that loses its contents when the power is turned off.
• Memory that is slow to access.
• Memory that stores data permanently.
• Memory that only stores the BIOS.

Which of the following is an example of non-volatile memory?

• ROM (Read-Only Memory).
• Cache.
• RAM.
• Registers.

What is the role of a BIOS (Basic Input/Output System)?

• To initialize the hardware and load the operating system.
• To execute programs.
• To store data.
• To control the input and output devices.

What is the purpose of the data bus in a computer system?

• To transfer data between the CPU and other components.
• To store system instructions.
• To manage power distribution.
• To control the flow of instructions.

What is the difference between RAM and ROM?

• RAM is volatile and used for temporary data storage, whereas ROM is non-volatile and stores permanent data.
• RAM is slower than ROM.
• ROM can store larger amounts of data than RAM.
• RAM is used for permanent storage, while ROM is for temporary storage.