This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.
What this question is testing
Objective: Memory
Prompt focus: Which type of memory is most commonly used as main system memory in current desktops and laptops?
Why the correct answer works
DDR4/DDR5 SDRAM
DDR4/DDR5 SDRAM is the standard main memory.
Why the tempting wrong answer fails
The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.
Plain-language takeaway
Modern systems use DDR4 or DDR5 SDRAM as main memory. SRAM is used in CPU caches; flash and EEPROM are non-volatile and slower.
Simple analogy
Think of memory like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.
How to review it before a retake
- Underline the command word and name what the question is asking before rereading the choices.
- Compare the correct answer against the closest distractor and write the exact detail that separates them.
- Retest this objective with a fresh question without looking at the rationale first.