Memory and Storage - IGCSE Computer Science

What is the main function of Random Access Memory (RAM)?

• Stores all the programs and data currently in use

• Stores data permanently

• Stores start-up routines for the computer

• Stores data that is remembered when the computer loses power

Which type of memory is non-volatile?

• Dynamic RAM (DRAM)

• Random Access Memory (RAM)

• Static RAM (SRAM)

• Read Only Memory (ROM)

What happens if a computer runs out of space in RAM?

• The computer will shut down

• The least used page will be moved to virtual memory

• The computer will automatically delete some data

• The CPU will communicate directly with the RAM

What is the main function of Read Only Memory (ROM)?

• Stores data that is remembered when the computer loses power

• Stores start-up routines for the computer

• Stores all the programs and data currently in use

• Stores data that is 'forgotten' when the computer loses power

What is the main disadvantage of using virtual memory?

• Virtual memory is volatile

• Virtual memory is expensive to build

• Virtual memory is very slow

• Virtual memory has limited storage space

What is the advantage of using virtual memory?

• Virtual memory allows the computer to continue running even when there is no more space in RAM

• Virtual memory requires fewer electrical components per bit stored

• Virtual memory is non-volatile

• Virtual memory is very fast

What is the purpose of cache memory in a computer system?

• Stores all the programs and data currently in use

• Stores frequently accessed data for quick retrieval

• Stores data permanently

• Stores start-up routines for the computer

Which type of memory is used to store BIOS settings in a computer?

• Dynamic RAM (DRAM)

• Random Access Memory (RAM)

• Static RAM (SRAM)

• Read Only Memory (ROM)

True or False - Volatile means that data will be stored even when a computer is powered down.

• True

• False

Reorder the following units of data from smallest to largest

• PiB

• Byte

• TiB

• GiB

• KiB