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From what location are the 1st computer instructions available on boot up?

  • A.ROM BIOS
  • B.CPU
  • C.boot.ini
  • D.CONFIG.SYS

Answer: A

Correct answer: ROM BIOS

At power-on the processor has no software in memory, so it fetches its first instruction from firmware - the ROM BIOS. Everything else, including boot.ini and CONFIG.SYS, is on disk and cannot be read until the BIOS has started the machine.

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