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Course review: what to remember

Lesson

Practice lab

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Match

Triage four slowdown tickets

The helpdesk has reports of a slowing export, a CPU-bound app, sluggish app switching, and poor game frame rates. Match each ticket’s measurements to the next focused investigation so technicians collect useful evidence before ordering parts. Confirm these supplied datasets under the same workload.

Lesson notes

Use this checklist to prepare for the final quiz.

Key ideas

  • The CPU runs instructions, but it depends on the rest of the system.
  • Cores, threads, clock speed, cache, heat, and workload all affect performance.
  • Good recommendations start with the user need and compatibility checks.
  • Troubleshooting starts by finding the real waiting line.

Check your understanding

  • Can you explain cores as workers?
  • Can you explain threads as lines of software work?
  • Can you explain cache as a nearby shelf?
  • Can you name two reasons a CPU slows down under load?
  • Can you explain why a CPU upgrade might not fix every slow PC?