TestOut PC Pro: 5.3 Optical Media
What is the difference between BD-R and BD-RE discs?
BD-R is read only memory, and BD-RE is re-writable memory.
How are Blu-ray drives made compatible with CD, DVD, and Blu-ray discs?
Because CD and DVD discs are read using a red laser and Blu-ray discs are read using a blue laser, Blu-ray drives have both red and blue laser heads.
How much data does a CD typically hold? How much data does a DVD hold? How much data does a Blu-ray disc hold?
-CDs can hold about 737 MB of data with error correction or 847 MB total. -DVDs with a single side of data can hold about 4.7 GB, and a dual-layer up to 8.5 GB of data. -Blu-rays with a single layer can hold 25 GB, and a double layer up to 50 GB.
An optical drive speed is identified as 24x10x70. What does each of the numbers indicate?
24 is the record speed, 10 is the rewrite speed, and 70 is the read speed.
A DVD drive and a Blu-ray drive can both read data at 4x speeds. How do the drive's speed compare to the amount of data that can be transferred?
A DVD drive reads data at 1.35 MBps and a Blu-ray drive reads data at 4.5 MBps.
Which type of connector attaches an optical drive to the motherboard?
A SATA cable
