Q. Which of the following is a storage device that uses rigid, permanently installed magnetic disks to store data/information?
✅ Correct Answer: (C)
Hard disk
Explanation:
(A) Optical disk: Uses laser technology (e.g., CD, DVD), not magnetic disks.
- (B) Permanent disk: Not a standard term in computer hardware.
- (C) Hard disk: Correct – It uses rigid, permanently installed magnetic disks to store data.
- (D) Floppy diskette: Uses magnetic storage but is removable and flexible, not rigid or permanently installed.
Conclusion:
Hard disk is the storage device described, so the correct answer is (C) Hard disk.
Explanation by: Mr. Dubey
(A) Optical disk: Uses laser technology (e.g., CD, DVD), not magnetic disks.
- (B) Permanent disk: Not a standard term in computer hardware.
- (C) Hard disk: Correct – It uses rigid, permanently installed magnetic disks to store data.
- (D) Floppy diskette: Uses magnetic storage but is removable and flexible, not rigid or permanently installed.
Conclusion:
Hard disk is the storage device described, so the correct answer is (C) Hard disk.