COMPUTER HARDWARE
STORAGE DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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SRAM
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DRAM
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SSD
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RAM
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Detailed explanation-1: -Delay-line memory requires constant refreshing because the data is actually stored as a signal in a transmission line.
Detailed explanation-2: -A DRAM storage cell is dynamic, meaning that it needs to be refreshed or given a new electronic charge every few milliseconds to compensate for charge leaks from the capacitor.
Detailed explanation-3: -The correct answer is Dynamic Random Access Memory (DRAM). It must be refreshed many times per second to store information, otherwise, it will lose what it is holding.
Detailed explanation-4: -Unlike flash memory, DRAM is volatile memory (vs. non-volatile memory), since it loses its data quickly when power is removed. However, DRAM does exhibit limited data remanence.
Detailed explanation-5: -Modern DRAM cells are periodically refreshed to prevent data loss due to leakage. Commodity DDR (double data rate) DRAM refreshes cells at the rank level. This degrades perfor-mance significantly because it prevents an entire DRAM rank from serving memory requests while being refreshed.