Quiz: Graphs and Teams

This round covers LangGraph, teams of agents, and MCP. These come up often in interviews.

• LangGraph
• Teams of agents
• MCP

Question 1

Question 1. What are LangGraph's three core ideas? A, Prompts, tokens, models. B, State, nodes, edges. C, Tasks, crews, tools. D, Files, folders, links. Pause the video and choose. The answer is B. Everything else builds on those.

Question 2

Question 2. A node returns a value for a field with no reducer. What happens? A, It's added. B, It replaces the old value. C, It errors. D, It's ignored. Pause the video and choose. The answer is B. Reducers change that.

Question 3

Question 3. What does interrupt need in order to work? A, A checkpointer. B, A GPU. C, A web server. D, Streaming. Pause the video and choose. The answer is A. State must be saved.

Question 4

Question 4. On resume, where does a node restart? A, At the interrupt line. B, From its first line. C, At the next node. D, At the graph start. Pause the video and choose. The answer is B. So keep side effects after it.

Question 5

Question 5. What is a thread ID for? A, Parallel speed. B, Separating saved conversations. C, Billing. D, Logging only. Pause the video and choose. The answer is B. Like a save file.

Question 6

Question 6. What's the main risk of too many approval requests? A, High cost. B, People stop reading them. C, Slow models. D, Bad prompts. Pause the video and choose. The answer is B. That's approval fatigue.

Question 7

Question 7. When is a supervisor better than handoffs? A, One specialist is enough. B, Results from several must combine. C, There are no tools. D, Speed is everything. Pause the video and choose. The answer is B. It stays in charge.

Question 8

Question 8. What should agents share with each other? A, Everything. B, Conclusions, not working notes. C, Nothing. D, Only passwords. Pause the video and choose. The answer is B. Clean context.

Question 9

Question 9. MCP connects an agent to what? A, Other agents only. B, Tools and data. C, GPUs. D, Browsers only. Pause the video and choose. The answer is B. A two A connects agents.

Question 10

Question 10. In MCP, who controls when a resource is read? A, The model. B, The application. C, The server. D, Nobody. Pause the video and choose. The answer is B. Tools are model controlled, prompts are user controlled.

Summary