WJEC Computer Science KO - Big quiz

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

• It directs the flow of instructions and/or data and coordinates other parts of the CPU.

• It stores the address in the main memory that is currently being read or written.

• It performs all the mathematical calculations/logical operations in the CPU.

• It keeps track of the memory address of the instruction to be executed next.

Which component is the main processing unit of a computer?

• Control Unit

• Arithmetic Logic Unit (ALU)

• Registers

• CPU

What is the function of the Control Unit within the CPU?

• It stores data temporarily.

• It performs the Fetch-Decode-Execute cycle.

• It directs the flow of instructions and/or data and coordinates other parts of the CPU.

• It is used for the temporary storage of currently running programs and data.

What can increase the performance of a CPU?

• Decreasing the number of cores

• Reducing the cache size

• Slowing down the clock speed

• Increasing the cache size

What is volatile memory?

• Memory that retains data when the power is switched off.

• Memory that loses data when the power is switched off.

• Memory that can only be read and not written to.

• Memory that is incredibly slow but inexpensive.

What is the typical architecture of a CPU as shown in the diagram?

• Harvard architecture

• Quantum architecture

• Von Neumann architecture

• ARM architecture

What does RISC stand for in processor types?

• Random Instruction Set Computer

• Reduced Instruction Set Computer

• Rapid Instruction Set Computer

• Real Instruction Set Computer

Which type of processor is known for processing complex instructions without having to break them down into many simpler instructions?

• RISC

• CISC

• Flash memory

• Cache memory

What is a characteristic advantage of a RISC processor over a CISC processor?

• Requires more circuitry to decode and execute instructions

• Processes instructions more slowly

• Consumes more power and generates more heat

• Requires less circuitry to decode and execute instructions, leading to less power consumption

Which type of memory is volatile and used for the temporary storage of frequently accessed data and instructions?

• Read-only Memory (ROM)

• Random Access Memory (RAM)

• Flash memory

• Cache memory