Which of the following is a characteristic of dynamic RAM (DRAM)?
A. It is non-volatile
B. It requires periodic refreshing
C. It uses flip-flops
D. It is faster than SRAM
Answer: Option B
Solution (By JKSSB Mock Tests)
DRAM stores data in capacitors, which lose charge over time; thus, it requires periodic refreshing (every few milliseconds) to retain data. SRAM is faster but more expensive.
Explanation:
The memory hierarchy is designed to provide a trade-off between speed (fast but expensive) and capacity (slow but cheap), optimizing overall system performance and cost.
No comments yet. Be the first to start the discussion!