Deck 20: Recording and Storage Formats

Question 1

One of the most impressive aspects of optical media is its ability to record and store both analog and digital data.

Answer 1

False

Question 2

The primary difference between magnetic and optical media is that optical media is volatile.

Answer 2

False

Question 3

CDs and DVDs are the same type of optical media.

Answer 3

True

Question 4

While the flow of digital data is measured in bits, all digital memory is measured in bytes.

Question 5

Industrial-grade rubies are often used as the lens material for CDs and DVDs, accounting for the red color of common lasers.

Question 6

Ordinary light, such as a light bulb, is referred to as

A) coherent light
B) incoherent light
C) infrared
D) both A and C

Question 7

What part of a videotape recording serves a similar function to perforations in film?

A) guard band
B) control track
C) timecode
D) video field

Question 8

When a laser beam is directed from the laser source to an optical disk and energized, it creates a physical change in the structure of that disk known

A) flat
B) pit
C) land
D) all of the above

Question 9

Which optical laser beam has the smallest wavelength, allowing it to read and record much more content on the same size disc than a laser with a bigger wavelength?

A) blue-violent laser beam
B) red laser beam
C) yellow laser beam
D) none of the above

Question 10

Grouping drives together in a system allows data to be duplicated on more than one drive and also allows for more storage than a single drive. This grouping can be arranged to decrease the amount of time it takes to record and reproduce files.

A) DATA
B) RAID
C) ROM
D) ESATA