Statement: In NAND flash memory technology, OLC is cheaper than TLC and supports frequent rewriting. Storage class memory (SCM) provides high-speed read/write and is ideal for server memory space. Is this statement True or False?

• A. True
• B. False
• C. Cannot Be Determined
• D. Not Applicable

Answer: (B)

In NAND flash, how many bits you store per cell drives both performance and cost. A single-level (OLC in some texts) stores 1 bit per cell, which gives high endurance and fast access, but because you’re using many more cells to store the same amount of data, the cost per gigabyte is higher, not lower, than multi-level options like TLC. So the claim that OLC is cheaper than TLC is the part that doesn’t fit. The note that OLC supports frequent rewriting aligns with its high endurance, but the overall statement is false due to the pricing part. Storage class memory indeed offers high-speed read/write and is used to supplement server memory, providing fast access beyond traditional storage, though specifics depend on the product.