Paper 1 · ICT
UGC NET December 2021 June 2022 (11.10.2022) Shift-II
Which of the following storage media from the list are optical storage media only?
- DVD-RAM
- Pen drive
- Magnetic tape
- SSD
- Blu-ray disc
A2, 3 & 4 only
B1 & 2 only
C4 & 5 only
D1 & 5 only ✓ Correct
Correct answer: (D) 1 & 5 only — The answer is 1 and 5.
Explanation
★The answer is 1 and 5.
★Optical media store data that is written and read with a laser.
★DVD-RAM is an optical disc, which is item 1.
★Blu-ray disc is also an optical disc, which is item 5.
★Pen drive and SSD use flash memory, and magnetic tape is magnetic, so items 2, 3 and 4 are excluded.
★So only DVD-RAM and Blu-ray are optical.
★So the answer is 1 and 5.
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