12 questions · pass bar 80% · retry as often as you like — your best score counts toward the gate.
1.What does LangGraph's checkpointer enable that a bare while-loop doesn't? (Pick the answer naming all three.)
2.What is the structural difference between orchestrator-workers and handoffs?
3.A pipeline has five sequential agent stages, each 90% reliable. Roughly what is end-to-end reliability, and what makes the practical situation even worse than that number?
4.Which of these is a legitimate technical justification for splitting into multiple agents?
5.What should a handoff payload contain, and why is passing the full conversation history usually wrong?
6.Mechanically, how does a human-in-the-loop interrupt work in a checkpointed LangGraph?
7.Your critic agent approves every draft, so the revision loop never fires. What's the most likely diagnosis and fix?
8.Why can a worker agent with a clean 5k-token context outperform a single agent carrying 100k tokens of accumulated history on the same subtask?
9.How would you detect that a multi-agent system should be collapsed to single-agent?
10.In a LangGraph state schema, two parallel searcher nodes both write to a findings: list[str] field. What must you do to avoid one update clobbering the other?
11.What is the correct way to route after a critic node in LangGraph, including loop safety?
12.For Lab 05's baseline comparison, why must the single-agent baseline get the same tools and model as the multi-agent system, and what's the most common way these comparisons lie?