1.2 Memory and storage

What is the highest representation we can make with 8 bits?

• 255

• 254

• 128

• 127

Which type of memory is described as 'volatile'?

• RAM

• ROM

• Hard Disk Drive

• CPU

What type of storage is a DVD ROM?

• Optical

• Magnetic

• Solid State

• RAM

Why is a Hard Disk Drive (HDD) not very portable?

• It has moving parts

• It is too large

• It will break if you touch it

• It is too small

What is colour depth?

• The bits in a pixel

• The number of bits used to represent colours

• The different colours in each pixel

• The bytes that make up the pixels

Image resolution means...

• The amount of colours in the image overall

• The number of pixels used to represent it

• The quality of the image e.g. HD

• The speed with which the image is rendered on a PC monitor

Where is virtual memory physically located?

• RAM

• ROM

• Hard drive

• Cache

Increasing the number of bits used for each pixel in an image will...

• Increase the range of colours that the image can display.

• Have no effect on the file size.

• Decrease the resolution of the image.

Secondary storage is....

• Volatile, short term and only internal

• Non-volatile, long term and internal/external

Which of the following types of storage is the most durable?

• Optical

• Magnetic

• Solid state

• They are all the same