## Old year 3 quiz

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

• To manage and coordinate the activities of the CPU

• To store frequently used instructions

• To fetch instructions from secondary storage

• To calculate mathematical results

What is the purpose of the Arithmetic Logic Unit (ALU)?

• To perform calculations and logical operations

• To control the flow of data in the system

• To store the results of instructions

• To decode program instructions into the main system memory

Which component stores the result of the ALU’s calculations?

• Accumulator

• Memory Data Register (MDR)

• Program Counter (PC)

• Memory Address Register (MAR)

Which of the following is a feature of the Von Neumann architecture?

• A. Single memory for data and instructions

• B. Separate buses for input and output

• C. Dedicated cache storage for each instruction

• D. Parallel execution of threads

Which of the following is another feature of the Von Neumann architecture?

• Instructions are fetched and executed one at a time

• Each component is connected to a separate CPU

• Data and instructions are processed simultaneously

• The CPU can switch between RISC and CISC modes

Which register holds the address of the next instruction?

• Program Counter

• Memory Data Register

• Control Unit

• Accumulator

Where is the instruction fetched from during the fetch–execute cycle?

• Memory

• The cache

• The Control Unit

• The CPU fan

What is the role of the Program Counter in the fetch–execute cycle?

• It holds the memory address of the next instruction

• It stores the instruction being executed

• It performs logic calculations

• It processes user input and output

Which of the following affects CPU performance?

• A. Clock speed and cache size

• B. Display resolution and monitor size

• C. Number of USB ports and GPU temperature

• D. Keyboard layout and speaker quality

Which of the following also affects CPU performance?

• Number of cores and cache memory

• Size of the hard drive and secondary storage such as SSDs

• Colour depth and sound card

• File format and compression level