Exercise 2: The Four Scoping Questions — Possible Solution
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THE FOUR QUESTIONS, PER THIS CHAPTER
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1. One user, or many?
2. One destination, or everywhere?
3. Total failure, or degraded?
4. Just started, or always broken?

QUESTION 1 — ONE USER, OR MANY?
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One user affected points toward that user's own machine, credentials,
or local network. Many users affected points toward a shared cause -
the server itself, a shared firewall rule, or DNS.

QUESTION 2 — ONE DESTINATION, OR EVERYWHERE?
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Can't reach one specific site/app but everything else works fine
narrows the search dramatically, compared to "the internet doesn't
work at all," which points much further upstream (their own
connection, gateway, or DNS) than a single-destination problem does.

QUESTION 3 — TOTAL FAILURE, OR DEGRADED?
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"Nothing loads at all" and "it loads, just very slowly" point at
different layers - per this chapter, a total failure often means
routing/DNS/firewall, while slowness often means something further up
the stack (e.g. a proxy, VPN, or NAT path adding latency, per Chapter 8).

QUESTION 4 — JUST STARTED, OR ALWAYS BROKEN?
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Something that worked yesterday and doesn't today means "something
changed" - a config push, an expired certificate, a new firewall rule -
which is a genuinely different search than something that has simply
never worked, which points toward a setup or configuration issue that
was never actually correct.

WHY THIS WORKS AS AN ANSWER
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It reproduces all four questions accurately and explains, for each one,
what a specific answer points the investigation toward - matching the
chapter's own stated reasoning for why each question narrows the
search rather than just listing the questions without their purpose.