Asked to do a Codility test involving two coding questions (in a choice of several different languages), one of which had an upper complexity bound.

This was followed by a phone screen with two managers.

Then, there was an on-site at their offices in Aylesbury (Intel Security).

Fairly standard stuff:

• A non-technical interview with the managers I'd spoken to on the phone.
• An on-site coding test.
• A QA test (look at this piece of software and identify deficiencies in it based on this functional specification).

If you walked up to a computer and found the networking wasn't working, what would you do to diagnose the issue?