Units 1.1 to 1.3 Revision - OCR

What is the purpose of the CPU?

• To store data permanently

• To execute instructions and process data

• To display graphics

• To manage network connections

Which component carries out the Fetch-Decode-Execute cycle?

• GPU

• RAM

• CPU

• HDD

What is the role of the ALU in the CPU?

• Storing data

• Performing arithmetic and logic operations

• Controlling the flow of data

• Handling input and output

Which register stores the memory address of the next instruction?

• MAR

• MDR

• Program Counter

• Accumulator

What is cache memory used for?

• Long-term data storage

• Temporary storage of frequently accessed data

• Storing user files

• Holding backup files

What does the Control Unit (CU) do?

• Performs calculations

• Manages the Fetch-Decode-Execute cycle

• Stores data permanently

• Displays output on a monitor

Which factor does NOT directly affect CPU performance?

• Number of cores

• Cache size

• Hard drive size

• Clock speed

What is the function of an embedded system?

• To run multiple applications

• To control a dedicated task

• To store large amounts of data

• To replace the main CPU

Which of these is an example of an embedded system?

• Desktop PC

• Smartwatch

• Cloud server

• External hard drive

Which of the following best describes Von Neumann architecture?

• It stores data and instructions separately

• It stores data and instructions together in the same memory

• It uses separate memory for processing

• It allows multiple CPUs to work in parallel