SRAM and flash memory

Which correctly describes an SSD compared with an HDD (hard disk drive)?

  1. AIt records magnetically on spinning disks
  2. BIt has no mechanically moving parts, offering fast random access and shock resistance
  3. CIt is always cheaper than an HDD for the same capacity
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Answer: B. It has no mechanically moving parts, offering fast random access and shock resistance

An SSD records data in NAND flash memory, so it has no mechanically moving parts such as disks and heads. As a result, random access in particular is fast, and it is resistant to shock and vibration and silent. Price per capacity generally tends to be lower for HDDs.

  • A. Recording magnetically on spinning disks is how an HDD works.
  • B. Correct. It has no moving parts, making it fast and shock-resistant.
  • C. Price per capacity generally tends to be lower for HDDs.
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More SRAM and flash memory questions

  1. What is the most appropriate main use of SRAM?
  2. In NAND flash memory, what is needed to write new data to a page that already contains data?
  3. Which correctly describes the difference between EEPROM and flash memory?
  4. Which correctly describes the static noise margin (SNM) that represents the stability of an SRAM cell?
  5. Which is closest to the typical endurance (number of rewrite cycles) of SLC NAND flash memory?