Optical Storage

Optical storage devices save data as patterns of dots that can be read using

• Laser Light

• Solar light

• Magnetic field

What do the initials DVD stand for?

• Data Versatile Disc

• Digit Versatile Disc

• Digital Versatile Disc

What type of storage device would be most suitable for the distribution of movies?

• Hard drive

• USB

• DVD-ROM

• DVD

Which one of these devices is optical?

• USB flash drive

• Magnetic stripe

• CD

• SSD

Optical storage media are all the mediums that use a light source to read or write data onto a disc

• True

• False

_______________optical discs have data written onto them when they are manufactured. This data cannot be changed.

• Read/write

• Read-only

• All

When CD-Rs and DVD-Rs are burnt, the laser makes _____________ marks on the silver-coloured metal layer. This is why these discs cannot be erased

• Temporary

• Permanent

Compact Disc - Read-Only Memory (CD-ROM) discs can hold around __________ of data

• 25 - 50GB

• 4.7GB

• 800MB

____________are used to distribute all sorts of data: software (e.g. office applications or games), music, electronic books

• Pen drive

• Hard disk

• CD-ROMs

DVD can store more data compared to blue ray disk.

• False

• True