Question

CD-ROM is a kind of
1. Optical disc
2. Magnetic disc
3. Magneto optical disc
4. None of the above

Answer 1

Correct Answer - Option 1 : Optical disc

The correct answer is Optical disc.

• Compact Disc Read-Only Memory, a CD-ROM is an optical disc that contains audio or software data whose memory is read-only.
• An optical disc is an electronic data storage medium that can be written to and read from using a low-powered laser beam.
• Originally developed in the late 1960s, the first optical disc, created by James T. Russell.
• Optical Disc includes CDs, DVDs, and Blu-ray discs. This allows you to play music or watch movies using prerecorded discs.

• A magnetic Disk is a type of secondary memory that is a flat disc covered with a magnetic coating to hold information.
  • It is used to store various programs and files. The polarized information in one direction is represented by 1, and vice versa. The direction is indicated by 0.
  • Hard disks, zip disks, and floppy disks are common examples of magnetic disks.
• A magneto-optical disc is a rewritable disc that makes use of both magnetic disk and optical technologies.
  • Magneto-optical disks are seldom manufactured and used due to the advent of flash drives and DVD/CD drives.
  • It is capable of having high data intensity using a magnetic read/write head and a laser.