What feature allows modern computer memory controllers to access two independent memory modules simultaneously, effectively doubling the standard data transfer bandwidth? MCQ with Answer and Explanation
What feature allows modern computer memory controllers to access two independent memory modules simultaneously, effectively doubling the standard data transfer bandwidth?
A. Hyper-threading
B. Direct Memory Access
C. ECC Error Correction
D. Dual-Channel Architecture
Answer: Option D
Solution (By JKSSB Mock Tests)
Dual-channel architecture introduces two independent memory bus pathways, allowing the controller to communicate with two RAM sticks concurrently to increase data throughput.
What structural issue happens when data files are written, deleted, and modified repeatedly, causing a mechanical hard drive's storage space to become scattered across non-contiguous areas?
Explanation:
Fragmentation occurs when files are broken up and saved in scattered, non-contiguous clusters across a mechanical disk, forcing the drive heads to move more and slowing access times.
Explanation:
SRAM (Static RAM) uses a latching circuitry design (typically 6 transistors per cell forming cross-coupled inverters) to maintain its state as long as power is applied.
Explanation:
DVD-R is write-once (recordable), not rewritable. CD-RW, DVD-RW, and BD-R are rewritable (or recordable once in case of BD-R? Actually BD-R is write-once, BD-RE is rewritable. But among options, DVD-R is write-once. So D is correct.
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