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Which compact disc is also called as read many times, erased and written again

A. CD-ROM
B. CD-R
C. CD-DA
D. CD-RW




Answer & Solution
Option: D
Explanation :compact discs or CDs can be divided into three main categories. (1)read-only (2) write-once disc (3) Erasable or Rewrite-able CD
(1) Read Only:- These discs you purchase with the data or information already on the compact disk.
The information is placed on the compact disk at the time the disc is manufactured. All you can do with the disc is play or read it.
(2) Write Once Disc:- This compact disc is also known as the recordable CD or CD-R. This disc is purchased blank and information can be written or recorded to the disc. Once the disc is full, it essentially becomes a read-only disc because no more information can be recorded to the disc and the previously recorded information cannot be erased and the compact disc cannot be reused.
(3) Erasable or Rewrite-able CD:- The third type of compact disc is the erasable or rewriteable CD known as the CD-RW. This disc is also purchased blank. Information can be written to the disc and then this information can be erased and the compact disk reused.
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