Vibe codingHardvc-g058

Subject Ai verificationLevel Senior–Staff~20 minCommon in Networking & APIs interviewsIndustries Telecom, Software development

Question

An agent wrote a C++ parser for a binary network protocol from the RFC. It compiles, parses your captured sample packets, and looks faithful to the spec. You don't fully understand the wire format and the parser handles attacker-controlled bytes. How do you verify it before it touches untrusted network input?

What a strong answer looks like

Treat the AI’s output as a draft to verify, not an answer to trust. Name the specific flaw and the input that triggers it, say how you’d catch it — tests, edge cases, reading critically — and how you’d re-prompt or decompose to get it right.

Learn the concepts

Describe your solution

Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.

Run or narrate your approach, then ask the coach.