Optical Discs

Question 1

___________ can hold over 128 GB of data.

Answer 1

Optical discs

Question 2

The 1s and 0s are represented by a flat areas called _____________ and bumpy areas called __________ on the disc surface.

Answer 2

• lands
• pits

Question 3

The disc is read by an ________________ using a laser that projects a tiny beam of light on these areas.

Answer 3

optical disc drive

Question 4

Most widely used optical discs are:

Answer 4

1. CD
2. DVD
3. Blu-ray discs (BDs)

Question 5

_____________ were the first widely available optical format for PC users, but have largely been replaces by DVDs and Blu-rays.

Answer 5

Compact discs (CDs)

Question 6

_______________ are the standard optical discs in PCs. Usually store movies or software.

Answer 6

Digital versatile discs (DVDs)

Question 7

_______________ are the newest form of optical storage designed to store ______________ video.

Answer 7

• Blu-ray discs (BDs)
• hi-def (high-definition)

Question 8

The newest Blu-ray discs, _______________ are able to play back 4K video content and store up to 100 GB of data.

Answer 8

Ultra HD Blu-rays (UHD BD)

Question 9

_______________ are discs that cannot be written on or erased by the user. ex) CDs, DVD, and blu-ray video games.

Answer 9

Read-only (ROM for read-only memory) discs

Question 10

________________ can be written on once. Ex) CD-R for permanent archives, and storing family photos DVD-R

Answer 10

Write-once (R for recordable) discs

Question 11

________________ are similar to write-once discs except that the disc surface is not permanently altered when data is recorded. Ex) storing, and sharing audio, video, and large multimedia presentations.

Answer 11

Rewritable (RW for rewritable or RAM for random-access memory) discs