OCR computer science revision 2

Which of the following are stored in RAM?

• Boot up instructions

• Saved work

• Programs

• Programs and data currently in use

Which of these storage devices used transistors to store data?

• Flash Memory

• Hard disk

• NAS

• DVD

Virtual Memory is ...

• Cloud storage

• Data that cannot be edited

• part of the computers hard drive is treated as RAM

• volatile memory

How many bits in a nibble?

• 3

• 128

• 4

• 8

How many bytes in a kilobyte

• 1000

• 100

• 1000000

• 100000

A petabyte is equal to ..

• 1,000 megabytes

• 1,000 terabytes

• 1,000 kilobytes

• 1,000 bytes

Which of the following are the three types of storage

• durability, cost, reliability

• capacity, cost, portability

• magnetic, optical, solid state

• magnetic, optical, electrical

Which of the following are written to and from by lasers

• hard drive

• USB drive

• DVD

• Solid state drive

Capacity means ...

• How much data can be stored on this medium

• How easily data can be moved from one location to another

• How much it costs per gigabyte

• How sturdy it is.

Bandwidth is ..

• the length of delay between data being transmitted and received

• Measured as a percentage

• The maximum amount of data that can be transferred per second

• The number of users on a network