A server administrator is installing a 64-bit OS on a server hardware and receives the following error message: Processor architecture not supported. Which of the following architectures is causing th

ARM is a distinct processor architecture that is 64-bit capable in many modern implementations, but it's not the reason for an x86 processor failing to run an x64 OS.

x64 is the 64-bit architecture for which the OS is designed; if the processor were x64, there would be no support error.

A 64-bit operating system requires a 64-bit processor to run. If the server's CPU is an x86 architecture, which is 32-bit, it will not be able to support a 64-bit OS, leading to the reported error.

SPARC is a RISC processor architecture used in specific systems (e.g., Oracle/Sun servers) and is not the common architecture that would cause this specific error when attempting to install a general x64 OS.

Alpha is an obsolete 64-bit RISC processor architecture, irrelevant to the common x86/x64 compatibility issue described.