Knowledge Check

Next callback evidence

While reviewing express routing middleware, a middleware validates then stalls the request. Which action fixes it, and which check proves it worked?

What this task practices

Next callback evidence is a knowledge check interview exercise that trains prompt interpretation, explicit assumptions, a concrete response, and a clear explanation of tradeoffs. The catalog marks it as hard difficulty. It focuses on Express Routing Middleware, Next Callback. The signed-in workspace provides the tools for the round and evaluates the attempt against task-specific criteria. Reference solutions, hidden checks, evaluator instructions, and candidate work remain private.