COMPUTER FUNDAMENTALS

Detailed explanation-1: -Read-only optical discs have data written onto them when they are manufactured. This data cannot be changed.

Detailed explanation-2: -Data is written to an optical disk in a radial pattern starting near the center. An optical disk drive uses a laser beam to read the data from the disk as it is spinning. It distinguishes between the pits and lands based on how the light reflects off the recording material.

Detailed explanation-3: -Using recordable optical media such as DVD-R is perfectly suitable for long-term archiving because it is write-once, read-many, meaning it is physically immutable-cannot be changed-so the data on it is tamper-proof.

Detailed explanation-4: -Blu-ray. The Blu-ray disk has emerged as clear leader in today’s optical storage market. Unlike CDs and DVDs, which use a red laser to read and write data, a Blu-ray disk uses a blue laser, which dramatically increases capacities and data transfer rates over CDs and DVDs.