After installing a second processor and corresponding heatsink into a server, an administrator notices that the new processor is not showing up during POST.
Which of the following could be the cause of this issue?
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A. B. C. D.B.
The most likely cause of the issue described in the scenario is that the voltage regulator module (VRM) was not installed (option B).
A VRM is a component that regulates the voltage supplied to the processor. If the VRM is not installed or is installed incorrectly, it can prevent the processor from functioning properly. Without a functioning VRM, the processor may not be receiving the correct amount of power, which could prevent it from showing up during POST (Power-On Self Test).
Option A, which suggests that the power supply is not sufficient to power the server, is not likely to be the cause of the issue, as the server would most likely not be able to start at all if this were the case.
Options C and D, which suggest that the IRQ or DMA settings were not set, are also unlikely to be the cause of the issue. These settings typically do not affect the ability of the processor to show up during POST. They are more likely to cause issues with peripheral devices such as network cards, sound cards, or SCSI adapters.
Therefore, the most likely cause of the issue described in the scenario is that the VRM was not installed.