220-1101 / 1102 Domain 3: Hardware

Which memory type is error-correcting and common on servers?

Multiple choice — select one answer

Answer choices

  1. a. ECC RAM
  2. b. Laser
  3. c. M.2 NVMe
  4. d. Mini-ITX

Architectural breakdown & explanation

ECC detects/corrects single-bit memory errors.

Correct answer(s): a. ECC RAM

Exam domain: Domain 3: Hardware (25% weight on the official guide).

Official documentation & study links

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