220-801 Question #696: Real Exam Question with Answer & Explanation

The correct answer is B: ECC. ECC (Error Correcting Code) RAM includes additional memory chips that store parity/checksum data alongside regular data. This allows the memory subsystem to automatically detect and correct single-bit errors, and detect (though not correct) multi-bit errors in real time - without

Question

Which of the following types of RAM is typically used to improve reliability?

Options

ADouble sided
BECC
CSODIMM
DRDRAM

Explanation

ECC (Error Correcting Code) RAM includes additional memory chips that store parity/checksum data alongside regular data. This allows the memory subsystem to automatically detect and correct single-bit errors, and detect (though not correct) multi-bit errors in real time - without the system ever noticing. This makes ECC RAM critical in servers, workstations, and any system where data integrity is essential (medical, financial, scientific applications). Double-sided RAM refers to chips on both sides of the module - a physical characteristic unrelated to error correction. SODIMM is a compact form factor for laptops. RDRAM (Rambus DRAM) was a high-speed memory standard from the late 1990s/early 2000s, not specifically associated with reliability improvements.

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