220-1201 Practice Question: A technician is upgrading a server that requires…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  Yes, as long as the speed and capacity match.

  Why it's wrong here

  While matching speed (e.g., DDR4-3200) and capacity (e.g., 32GB) is crucial for any RAM installation, it is insufficient when a server specifically requires Error-Correcting Code (ECC) memory. Non-ECC RAM lacks the dedicated parity bits and controller logic necessary to detect and correct single-bit memory errors, which are vital for maintaining data integrity and system stability in critical server environments. Therefore, simply matching speed and capacity will not make non-ECC RAM compatible with an ECC-required system.

• ✗

  Yes, but only if the server's BIOS is set to ignore ECC errors.

  Why it's wrong here

  Servers designed to require ECC memory integrate this functionality at the motherboard chipset and CPU level, which actively expects and utilizes the error correction capabilities of ECC modules. A BIOS setting to "ignore ECC errors" would be largely ineffective or non-existent in such systems, as the fundamental hardware architecture mandates ECC for proper operation and data integrity. Attempting to use non-ECC RAM would likely result in boot failures or severe instability, regardless of BIOS configuration.

• ✓

  No, because non-ECC RAM is not compatible with ECC-required systems.

  Why this is correct

  ECC (Error-Correcting Code) RAM modules incorporate additional memory chips and internal logic specifically designed to detect and correct single-bit memory errors, and sometimes detect multi-bit errors. Systems requiring ECC memory, typically servers and workstations, have motherboards and CPUs that are designed to interface with and leverage these error correction capabilities. Non-ECC RAM lacks these extra chips and the necessary error correction circuitry, making it fundamentally incompatible with systems whose memory controllers are configured to expect and utilize ECC functionality for data integrity and system stability.

• ✗

  No, because DDR4 desktop modules are physically larger than server modules.

  Why it's wrong here

  This statement is incorrect because DDR4 memory modules, whether designed for desktop or server use, adhere to standardized physical dimensions and pin counts (288 pins for DIMMs). The form factor (e.g., UDIMM, RDIMM, LRDIMM) and the presence of ECC functionality are the distinguishing factors, not a general difference in physical size between "desktop" and "server" DDR4 modules. Therefore, physical size is not the reason for incompatibility between non-ECC and ECC-required systems.