CompTIA Server+ SK0-005 Practice Question
During a scheduled upgrade of a rack-mounted virtualization host, a systems administrator replaces one of four 16 GB DDR4-2666 ECC LRDIMMs with an otherwise identical 16 GB DDR4-2666 ECC RDIMM because no matching spare is available. After the change, the server halts during POST and continuously emits a memory-error beep code. Reseating the new module has no effect, but removing it restores normal operation. According to standard troubleshooting methodology, which of the following is the MOST probable cause of the POST failure?
The CPUs exceeded their thermal design limits after the memory change.
The replacement DIMM type is incompatible with the modules already installed in the server.
The CMOS battery has lost the stored memory-timing configuration.
The power supply cannot provide the additional current required by the new DIMM.