5.3 Optical Media, 5.3.5 Practice Questions

Which Blu-ray standard defines rewritable discs?

BD-RE

-Jared has just installed an additional HDD on his Windows computer for storing multimedia files. He inserts a DVD disc to watch a movie with his usual movie player software, but the movie fails to play. In fact, the player indicates that there is no DVD drive available. --What is the BEST first step that Jared should take to resolve the issue?

Make sure the movie player is pointing to the correct driver letter for the DVD drive.

Which optical media has the greatest storage capacity?

Single layer, single-sided Blu-ray Disc

Which of the following types of Blue-ray Discs can hold up to 100 GB of data?

Triple-layer

-Annette has purchased a new external DVD drive to use with her PC. She inserts a DVD into the drive and, after several seconds, she receives an error message indicating that the drive is not accessible. --What is the FIRST thing Annette should do to try to resolve the issue?

Wait a few seconds and try accessing the DVD again.

Which action is recommended to minimize the effect of scratches when wiping a disc to clean it?

Wipe the disc in straight lines from the center to the edge.

What are the fundamental differences between a DVD drive and a Blue-ray drive?

1. Blu-ray uses a blue laser instead of a red laser. 2. The Blu-ray laser has a shorter wavelength, which allows data to be packed more tightly on the disc.

Which of the following are optical storage devices?

1. DVD 2. BD 3. CD

Match each label on the left with the correct characteristics on the right.

1. First developed to store digital music. Later, it was adapted to store digital computer data. --Compact Disc (CD) 2. Can be written, read many times, erased, and rewritten. It has a capacity of about 650 MB. --Compact Disc-ReWritable (CD-RW) 3. Single-sided discs can hold about 4.7 GB of data. Dual-layer discs can hold up to 8.5 GB of data. --Digital Versatile Disc (DVD) 4. Dual-layer version employs two recordable dye layers, each capable of storing data. --Digital Versatile Disc-ReWritable (DVD-RW) 5. Uses blue laser light, which has a short wavelength, allowing data to be packed more tightly onto the disc and is rewritable. --Blu-ray Disc (BD) 6. Was originally developed for high definition video (and expanded content on movie discs), but can also be used for data storage. --Blu-ray Disc-Recordable (BD-R)

What is a disadvantage of using a DVD-R DL (Dual Layer) disc over an ordinary DVD?

A DVD-R DL has slower write speeds