What is the purpose of a hard disk's actuator arm? MCQ with Answer and Explanation

Question
What is the purpose of a hard disk's actuator arm?
A. To rotate the platter
B. To control the spindle motor
C. To hold the platters
D. To move the read/write head across the platter
Answer: Option D
Solution (By JKSSB Mock Tests)
The actuator arm positions the read/write heads over the correct track on the platter. It moves the heads radially across the disk surface.
This question belongs to: Computer Memory and Storage Devices
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Practice More Memory and Storage Devices Questions

Question #1
What is the purpose of a memory's refresh cycle?
A. To synchronize with the CPU
B. To increase memory speed
C. To restore charge in DRAM capacitors
D. To clear memory contents
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Correct Answer: Option C

Explanation:
DRAM requires periodic refreshing to restore the charge in its capacitors, preventing data loss due to leakage.
This question belongs to: Computer Memory and Storage Devices
Question #2
What does the acronym 'HDD' stand for?
A. High Density Drive
B. Hard Disk Drive
C. Heavy Duty Drive
D. Hybrid Digital Drive
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Correct Answer: Option B

Explanation:
HDD stands for Hard Disk Drive, a data storage device using magnetic storage on rotating platters.
This question belongs to: Computer Memory and Storage Devices
Question #3
Which of the following is a type of memory that is used in enterprise environments for high reliability?
A. SDRAM
B. ECC RAM
C. Non-ECC RAM
D. DDR3
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Correct Answer: Option B

Explanation:
ECC RAM includes error correction capabilities, improving system stability and data integrity, making it suitable for servers and mission-critical applications.
This question belongs to: Computer Memory and Storage Devices
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