Optical devices Flashcards
1
Q
Name examples of optical media?
A
DVD’S, CD’S and Blu-ray discs
2
Q
How are optical media read?
A
Lasers write data to the disc and read data from it
3
Q
Name the three different CD formats
A
Read only (CD-ROM) recordable (CD-R) rewriteable (CD-RW)
4
Q
What happens at the manufacturing of CD-ROM?
A
Pressed with data at the time
5
Q
How are optical devices similar to hard disk drives?
A
They both have moving parts
6
Q
How are optical media slow compared to SSD’s?
A
Because they have moving parts it makes their access times and data transfer speed relatively slow
