Question

which of the following best describes the function of rom? a) it stores information short term during vehicle operation. b) it acts like a \scratch pad.\ c) it provides the cpu with a permanent set of instructions. d) it stores dtcs and learned values.

Explanation:

• Option A describes RAM, which handles short-term data during operation.
• Option B is also a function of RAM, used as temporary working storage (scratch pad).
• Option C is correct: ROM (Read-Only Memory) holds permanent, non-volatile instructions (like firmware) for the CPU that remain even when power is off.
• Option D refers to memory modules that store diagnostic trouble codes and adaptive values, not ROM.

Answer:

C) It provides the CPU with a permanent set of instructions.