Your question is SQL Server Performance Triage. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You receive a call that an SQL Server is slow and appears to be locked up with 5,000+ connections. How do you locate the connection that is causing the issue within 5 to 10 seconds?