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Memory quick check

A quick check of 3 questions. After you submit, each question shows the right answer and why.

3 of 9 questions, Advanced level. Aimed at the Advanced level, your current depth. Questions you have not answered yet come first.

Show all 9 questions

ScientistQuestion 1 of 3

Why does DRAM have to be refreshed over and over?

ScientistQuestion 2 of 3

If every DRAM cell must be refreshed once every 64 ms, how many times is each cell refreshed in one second? Give a whole number (rounded down).

AdvancedQuestion 3 of 3

If main memory already holds a program and its data, why do processors also have caches?