What is the function of the read/write head in a hard disk?
A. To store data on the platter
B. To rotate the platter
C. To read and write data magnetically on the platter
D. To move the actuator arm
Answer: Option C
Solution (By JKSSB Mock Tests)
The read/write head contains electromagnetic coils that read data by sensing magnetic fields and write data by changing the magnetic polarity on the platter surface.
Explanation:
Virtual memory is a memory management technique that uses secondary storage (like an HDD or SSD) to simulate additional RAM, allowing programs to run even if they exceed physical memory capacity.
Explanation:
The spindle motor rotates the platters at a constant speed (e.g., 5400 or 7200 RPM), allowing the read/write heads to access data on the rotating surface.
No comments yet. Be the first to start the discussion!