Chapter 10

Question 1

What are the two lasers that are included in a DVD optical drive?

Answer 1

The 780nm laser is for CDs, the 650 nm laser is for DVDs

Question 2

Which of the following is a specification that ensures the ability of a CD drive to read most types of CDs including CD-RWs?

Answer 2

MultiRead

Question 3

Which side of the CD has a thinner protective layer, the top surface or the bottom surface?

Answer 3

Top

Question 4

The ____________ is the metal master disc created from the glass by electroforming

Answer 4

father

Question 5

It is possible to have difficulty recording an optical disc if the computer has too many other applications running

Answer 5

True

Question 6

Which of the following might correct a reliability problem with a CD-R drive?

Answer 6

firmware update

Question 7

Which of the two areas on an optical disc that conveys information does not reflect the laser light that shines on it?

Answer 7

pits

Question 8

The delay between the drive receiving the command to read data in a location and the time when the first data is read is known as _________________ time

Answer 8

access

Question 9

What type(s) of DVDs have copy protection applied? DVD-Videos or DVD-ROMs

Answer 9

DVD-Videos

Question 10

When a CD operates in __________, the disc motor speed varies as the head moves across the surface of the CD

Answer 10

CLV

Question 11

Name the now-defunct competing technology to the Blu-ray disc

Answer 11

HD-DVD

Question 12

What is the name of the first optical disk file system standard?

Answer 12

High Sierra

Question 13

When the storage area that holds data waiting to be written to a CD runs out of data, __________ has occurred.

Answer 13

a buffer underrun

Question 14

Are Blu-ray disc drives backward compatible with DVDs and CDs?

Answer 14

Yes

Question 15

Explain briefly the operation of a laser that is writing a pit to a CD-R disc

Answer 15

A laser is used to burn “pits” into a reflective ridge on the disc. These burned pits are less reflective than the rest of the ridge thus functioning as transitions.

Question 16

Select the CD-R media color that would work best for long term archiving and a manufacturer who could provide discs of that color.

Answer 16

Silver-Blue

Verbatim, DataLifePlus, HiVal, Maxwell, TDK

Question 17

CD-Rs are compatible with most CD Drives

Answer 17

True

Question 18

The ____________ book standard is what all the CD standards based on

Answer 18

red

Question 19

How would you define a closed disc?

Answer 19

The situation that occurs when the last lead-in does not contain the address of the disc’s next useable space

Question 20

Name the problems that can cause the digital information ripped from a CD to be inaccurate

Answer 20

Data may be approximated if errors beyond the capability of the CIRC occur

Clock inaccuracies may cause data to get out of step when reading the CD (jitter)

Differences in firmware

Driver differences

Question 21

Track at once (TAO) and _________________ can be used to record a mutlitsession disc

Answer 21

packet writing

Question 22

DVD copy protection systems are not completely secure and their code could be broken.

Answer 22

True

Question 23

A few errors are almost impossible to detect in an audio CD. the missing sound data can be interpolated

Answer 23

True

Question 24

What was the name of the first CD standard?

Answer 24

CD-DA

Question 25

Which of the following ---is--- an advantage of a Blu-ray laser lens that results from the higher numerical aperture of the lens?(Which statement is False)

Answer 25

Greater ability to gather light Higher magnification Shorter focal length

Question 26

Closing a TAO session is the same as closing a disc.

Answer 26

False

Question 27

Heating an area of the phase-change layer of a CD-RW to liquid state causes the layer to have a __________ (higher, lower) reflectivity and act like a pit.

Answer 27

Lower

Question 28

__________ formatting is somewhat like optical media that is formatted according to the ISO 9660 file format.

Answer 28

Floppy disk

Question 29

What is the file format that is used with Kodak’s Picture CD service?

Answer 29

JPEG

Question 30

A few data errors are almost impossible to detect in a data CD. The converter codec can approximate missing data

Answer 30

False

Question 31

___________ bytes enable the drive to find songs on the CD and convey information about the disc in general

Answer 31

subcode

Question 32

What are the three operations that must occur when a drive switches a PTP disc from layer 0 to layer 1?

Answer 32

Laser pickup moves back to the inside of the disc change laser focus spin the disc in the opposite direction

Question 33

Can a DVD video player access the data on a DVD-ROM disc

Answer 33

No

Question 34

What is the most noteworthy advantage that UDF has over ISO 9660?(pick most correct answer)

Answer 34

It can work with packet writing (makes writing small amounts of data to an optical disc possible).

Question 35

The author believes that magnetic storage will be replaced by optical storage because magnetic storage is faster, and of a higher density

Answer 35

False

Question 36

Select the best answer concerning the two types of sectoring and their characteristics that are specified in the Yellow Book

Answer 36

Mode 1 with error correction, Mode 2 with differing levels of error detection and correction.

Question 37

Unlike CDs, DVDs use the same full error correction for either data or audio/video storage.

Answer 37

True

Question 38

What are the two things that optical disk format standards control

Answer 38

How the data is formatted so the drive can read it How the PC software and drivers are designed to interpret the data properly

Question 39

What is the name of the area on a CD that marks the end of data on a single session disc or the end of a session on a multisession disc?

Answer 39

Lead-out

Question 40

Which of the standards below specifies how data and audio can be combined on a single CD?

Answer 40

Blue book

Question 41

What are the two standards that can be used to record video on CDs?

Answer 41

White Book (VCD), Super Video CD

Question 42

Which of the lists of characteristics below is made up entirely of DVD characteristics that enable DVDs to store more data than CDs?

Answer 42

Less sector overhead, larger area for data, reduced track pitch