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Hardware interview practice

Match Common Memory Types to Their Storage Behavior

EasyTimingSystemVerilog

An architect compares on-chip cache cells, dense main memory, clocked DRAM interfaces, double-data-rate transfers, and fixed nonvolatile lookup contents. Which description is correct?

Choose one

Answer choices

  1. A. ROM is the fastest volatile write memory and loses all data whenever power is removed.
  2. B. SRAM stores state in a latch-like cell without refresh; DRAM stores charge and needs refresh; SDRAM is clocked DRAM; DDR transfers on both clock edges; ROM retains fixed/programmed contents without normal volatile writes.
  3. C. SDRAM means serial DRAM, and DDR doubles capacity rather than transfers per clock.
  4. D. SRAM uses one leaky capacitor per bit and requires refresh, while DRAM uses a multi-transistor latch and never refreshes.
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