Section 1: Components of a Computer System

1. 1. Which of these contains instructions used by the CPU when a computer is booting up?

• Hard disk drive

• RAM

• ROM

2. 2. Which part of the CPU performs operations such as AND, OR and NOT?

• Arithmetic Logic Unit (ALU)

• Control Unit (CU)

• Memory Data Register (MDR)

3. 3. A device driver is a piece of software which...

• ...provides a user interface.

• ...allows an OS to interact with internal hardware or peripherals.

• ...manages user files and applications.

4. 4. Which of the following types of storage media are commonly used by businesses to archive large amounts of data?

• Hard disk drive

• Optical disc

• Magnetic tape

Give an example of a device which is likely t o contain an embedded system?

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How does virtual memory impact a computers performance?

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Outline how encryption software can help to keep data secure.

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Explain what happens during the 'fetch' stage of the fetch-execute cycle.

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