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Question:

Which of the following will not allow the server to recognize all of the memory installed at the same time in the case that a technician upgraded the memory on a server from two 8GB sticks to eight 32GB sticks. The server memory is now at full capacity per the user guide. Only 128GB of memory is recognized by the OS and the BIOS when the technician powers on the system. The technician decides to upgrade to the latest version of the firmware on the system, which does not help. Then the technician installs the memory in sets of 64GB at a time. Each individual set of 64GB is fully recognized by the server.

A The server needs DDR4 memory, and DDR3 is installed
Explaination