What does the processor first look at when booting up a PC?
  1. Motherboard
  2. Hard drive
  3. RAM
  4. BIOS
Explanation
Answer: D -When booting up a system, the processor first looks at the BIOS to determine the machine’s fundamental configuration and environment.

Key Takeaway: The first thing that the BIOS does when booting the PC is perform the Power-On Self-Test, or POST for short. The POST is a built-in diagnostic program that checks your hardware to ensure that everything is present and functioning properly before the BIOS begins the actual boot.
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