Which component is responsible for memory error detection and correction?

• A. ECC memory
• B. TIM
• C. CPU socket
• D. DIMM slots

Answer: (A)

The memory subsystem feature being tested is ECC memory. ECC RAM includes extra bits and logic that detect and correct errors as data is read from memory. When a single-bit error occurs, the ECC information allows the system to reconstruct the correct value automatically, preventing corrupted data from propagating. If two bits are corrupted, the system can usually detect that an error has occurred but cannot correct it, which may trigger an error alert or halt. This reliability is essential in servers and data centers where data integrity is critical. The other items—thermal interface material, the CPU socket, and DIMM slots—are related to heat transfer and physical connection, not error detection or correction.