Which of the following is a type of flash memory that can be erased in blocks rather than one byte at a time?
A. NOR flash
B. EEPROM
C. EPROM
D. NAND flash
Answer: Option D
Solution (By JKSSB Mock Tests)
NAND flash memory is erased in blocks, making it suitable for high-density storage like SSDs and USB drives. NOR flash allows byte-level access but is slower for writing.
Explanation:
DRAM stores data in capacitors, which lose charge over time; thus, it requires periodic refreshing (every few milliseconds) to retain data. SRAM is faster but more expensive.
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