Chapter 4 Revision

What is the main purpose of RAM?

• To store calculations only
• To store the boot program
• To store any programs and data currently in use
• To store programs and data while the computer is switched off

What is cache memory?

• It is used to permanently store data and programs
• It is used to store numbers
• It is used between the RAM and CPU to improve performance by holding data that has just been or is about to be processed.
• It is used to store letters  

In order of fastest to slowest with the fastest on the left and slowest on the right, name each type of memory in order.

• Cache > RAM > Hard Drive
• Hard Drive > RAM > Cache
• RAM > Cache > Hard Drive
• RAM > Hard Drive > Cache

What is the purpose of the CPU?

• To process all the data and instructions.
• To turn the computer on.
• To create PowerPoint presentations.
• To provide power to the computer.

Which one of the following is an example of primary memory?

• ROM

• RAM

• Micro SD Card

• Hard Drive

What is the job of the control unit?

• It carries out calculations
• It stores information.
• It does nothing.
• It controls the input and output of data to make sure that it gets to the right place.

Which are two parts of the CPU?

• RAM & ROM

• Hard Drive & Motherboard

• The ALU and Cache

• Control unit and RAM

What are registers used for?

• To check that students are in school.
• To temporarily hold bits of data needed by the CPU.
• To make sure that the CPU runs properly.
• To make the CPU faster.

What happens at the Decode step of the fetch-decode-execute cycle?

• The CPU makes sense of the instructions.
• The CPU fetches the information from RAM.
• The instructions are executed.

What does CPU stand for?

• Control Processing Unit
• Central Processing Unit
• Central Power Unit
• Center Power Unit