OCR GCSE Computer Science Paper One Quiz section 1.1-1.2

What is the main function of the CPU?

• To store data

• To carry out program instructions

• To display graphics

• To manage network connections

What does the ALU (Arithmetic Logic Unit) do?

• Stores frequently accessed items

• Coordinates the fetch execute cycle

• Holds the results of calculations

• Carries out maths and logic operations

Which type of memory is ultra small and ultra fast?

• ROM

• Cache

• RAM

• Registers

What is the role of the Program Counter?

• Stores the actual data being fetched

• Holds the results of ALU calculations

• Contains the address of the next instruction to be fetched

• Coordinates the fetch execute cycle

What is the main job of ROM?

• To hold the results of calculations

• To store frequently accessed items

• To act as an extension of RAM

• To load the operating system during startup

Which type of secondary storage is the fastest?

• Solid state storage

• Optical storage

• Virtual memory

• Magnetic storage

What does a left binary shift do to a number?

• Subtracts one from the number

• Adds one to the number

• Doubles the number

• Halves the number

What is the main characteristic of embedded systems?

• They are used in household appliances and cars

• They are part of the CPU

• They are very complex

• They have multiple purposes

What does volatile memory mean?

• Data is lost when power is off

• Data is retained when power is off

• Data is frequently accessed

• Data is stored permanently

What is the main advantage of SSDs over other types of secondary storage?

• They are the most portable

• They are the fastest

• They are the cheapest

• They have the largest capacity