What is the function of the spindle motor in a hard disk?
A. To control the read/write head
B. To rotate the platters
C. To hold the disk in place
D. To move the actuator arm
Answer: Option B
Solution (By JKSSB Mock Tests)
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.
What type of memory module architecture includes a specialized hardware register between the memory controller and the DRAM chips to stabilize heavy enterprise server setups?
Explanation:
Registered (or buffered) RAM places an internal register between the system memory controller and the DRAM modules, reducing electrical load and increasing system stability for enterprise server arrays.
Explanation:
A parity bit is an extra bit added to data to detect errors (single-bit errors) in memory. It is used in some RAM modules for error detection.
Explanation:
The POST (Power-On Self-Test) routine is hardcoded into the system BIOS/UEFI ROM and runs instantly at startup to verify that essential hardware components are operational.
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