Chapter 10 Flashcards
What are the two lasers that are included in a DVD optical drive?
The 780nm laser is for CDs, the 650 nm laser is for DVDs
Which of the following is a specification that ensures the ability of a CD drive to read most types of CDs including CD-RWs?
MultiRead
Which side of the CD has a thinner protective layer, the top surface or the bottom surface?
Top
The ____________ is the metal master disc created from the glass by electroforming
father
It is possible to have difficulty recording an optical disc if the computer has too many other applications running
True
Which of the following might correct a reliability problem with a CD-R drive?
firmware update
Which of the two areas on an optical disc that conveys information does not reflect the laser light that shines on it?
pits
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
access
What type(s) of DVDs have copy protection applied? DVD-Videos or DVD-ROMs
DVD-Videos
When a CD operates in __________, the disc motor speed varies as the head moves across the surface of the CD
CLV
Name the now-defunct competing technology to the Blu-ray disc
HD-DVD
What is the name of the first optical disk file system standard?
High Sierra
When the storage area that holds data waiting to be written to a CD runs out of data, __________ has occurred.
a buffer underrun
Are Blu-ray disc drives backward compatible with DVDs and CDs?
Yes
Explain briefly the operation of a laser that is writing a pit to a CD-R disc
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.
Select the CD-R media color that would work best for long term archiving and a manufacturer who could provide discs of that color.
Silver-Blue
Verbatim, DataLifePlus, HiVal, Maxwell, TDK