Planner-Executor Agents Quiz

Answers and explanations appear as you take the quiz.

1. What is the core idea behind a planner-executor agent?
   • Separating the role of breaking a goal into steps from the role of carrying steps out
   • Running two copies of the same model to vote on answers
   • Using one model only for image generation
   • Removing the need for tools entirely
2. Why does 'replanning' matter in this pattern?
   • It deletes the original goal
   • It lets the planner adjust steps when execution fails or new information appears
   • It doubles the number of tools available
   • It prevents the executor from using APIs
3. What problem does separating planning from execution help avoid?
   • Running out of disk space
   • Slow internet connections
   • A single model losing track of the goal, skipping steps, or hallucinating progress
   • Needing a graphics card
4. How does the executor typically accomplish its assigned step?
   • By rewriting the planner's goal
   • By ignoring the plan
   • By generating only images
   • By calling tools, APIs, or other models
5. How is progress usually communicated back to the planner?
   • Through completed-step state passed via the context window or external memory
   • It is never communicated
   • Only by restarting the program
   • By emailing the user
6. What trade-off did LangChain note for its initial Plan-and-Execute approach?
   • It guaranteed one-call completion of every task
   • It made more language-model calls in exchange for handling longer-horizon planning
   • It removed all tool calls from the executor
   • It required every plan to be executed without feedback
7. Why should a planner-executor loop have a step or cost limit?
   • To make every plan succeed on the first attempt
   • To remove the need to inspect execution results
   • To prevent repeated planning and tool calls from continuing without useful progress
   • To guarantee the planner has no errors
8. What should an agent check before declaring a multi-step task complete?
   • Whether it produced a long plan
   • Whether every planned step was attempted regardless of outcome
   • Whether the executor used the most expensive tool
   • Whether the observed result satisfies the goal’s completion criteria