Reflection · Where Did the Connection Break?

At the start of this week, "game won't connect" might have meant "internet broken" by default. Hopefully not anymore — we found a whole path: application, computer, network interface, local connection, switch, router, internet, remote service. And we found something important: the symptom appears wherever the user happens to notice it. The cause can be somewhere else entirely.

Choose one scenario

From the troubleshooting simulation, pick the case that required the most reasoning — not necessarily the hardest one, but the one where a single piece of evidence actually changed how you were thinking about the problem.

Reflection prompt (150-200 words)

Which piece of evidence changed your diagnosis the most during the Week 16 troubleshooting simulation, what possibilities did it eliminate, and why was that more useful than simply guessing at the cause?

Your response needs:

1. the symptom — what the user saw
2. your initial hypothesis — what you first suspected
3. the test — what you checked
4. the evidence — what result changed your thinking
5. the narrowing — what possibilities became less likely
6. the final diagnosis — what became the strongest explanation

Example

Symptom: PC-03 could not reach the game service. Initial hypothesis: the internet connection might have been down. Test: we checked whether another workstation on the same network could reach the game. Evidence: PC-02 connected normally. That made a total internet outage and a complete game-service outage less likely, since another workstation had just used both successfully. We shifted focus to PC-03's local connection and eventually identified its cable path as the likely problem.

That's troubleshooting: observe, test, compare, narrow — not observe, panic, restart everything.

Being wrong first isn't failure

If your first hypothesis turned out to be wrong, that's not a failure of the process. A hypothesis is allowed to be wrong. What matters is whether the evidence caused you to actually update it — that's the whole point of running a test in the first place.

Final sentence

Finish:

Troubleshooting without evidence is basically __________.

Use your own words. One reasonable answer: expensive guessing.

Week 16 closeout

Week 15 asked what parts make up the system. Week 16 asked how those parts connect, and how to find where a connection actually failed. You now have network paths, switches, routers, addressing, DHCP, DNS, services, failure scope, hypotheses, diagnostic tests, and evidence — enough networking to reason clearly about an esports lab, and still squarely appropriate for an introductory course.