Which measurement represents the standard rotational velocity metric of modern high-performance desktop mechanical hard drives? MCQ with Answer and Explanation
Which measurement represents the standard rotational velocity metric of modern high-performance desktop mechanical hard drives?
A. MHz (Megahertz)
B. IOPS (Input/Output Operations Per Second)
C. RPM (Rotations per minute)
D. Gbps (Gigabits per second)
Answer: Option C
Solution (By JKSSB Mock Tests)
Mechanical hard drive speeds are fundamentally constrained by how fast their physical platters spin, measured in Rotations Per Minute (RPM), commonly 5400 or 7200 RPM.
Explanation:
In an SoC, the memory controller manages the interface between the processor and the external memory (DRAM), handling data transfers and commands.
Explanation:
DDR4 common CAS latencies are around 14-16, though higher speeds may have CL18-22. DDR3 had CL9-11. DDR5 is higher (CL30+). So A is correct for typical DDR4.
Explanation:
SSD stands for Solid State Drive. It is called 'solid state' because it contains no moving mechanical components, relying instead on solid-state electronics.
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