Quiz for LangGraph and Agentic AI module

No.	Training Unit	Lecture	Training content	Question	Level	Mark	Answer	Answer Option A	Answer Option B	Answer Option C	Answer Option D
1	Unit 1: LangGraph Foundations & State Management	Lec1	LangGraph vs LangChain	What is the primary structural difference between LangChain chains and LangGraph?	Easy	1	B	LangGraph only supports linear flows.	LangGraph supports cyclic flows and loops, while chains are typically linear.	LangGraph removes the need for LLMs.	LangChain supports state persistence, while LangGraph does not.
2	Unit 1: LangGraph Foundations & State Management	Lec1	State Management	What is the recommended pattern for State management in LangGraph?	Easy	1	A	Messages-centric pattern (using messages list).	Context-only pattern (using distinct string fields).	Stateless execution.	Database-only pattern.
3	Unit 1: LangGraph Foundations & State Management	Lec1	State Reducers	What is the specific function of add_messages in a TypedDict state?	Medium	1	C	It deletes old messages to save memory.	It converts messages to JSON strings.	It appends new messages to the list and handles deduplication/merging.	It sends messages directly to the LLM without storing them.
4	Unit 1: LangGraph Foundations & State Management	Lec1	Message Types	Which message type represents a response generated by the Large Language Model in LangChain?	Easy	1	B	HumanMessage	AIMessage	SystemMessage	ToolMessage
5	Unit 1: LangGraph Foundations & State Management	Lec1	Nodes	In a LangGraph node function, what is the standard return value format?	Medium	1	D	A string containing the answer content.	A boolean indicating if the node succeeded.	The full State object with all fields updated.	A dictionary representing State updates (deltas).
6	Unit 1: LangGraph Foundations & State Management	Lec1	Edges	What is the primary purpose of “Conditional Edges” in LangGraph?	Medium	1	A	To route execution dynamically based on the current state (e.g., router logic).	To connect nodes that always run in a fixed sequence.	To visualize the graph structure in a user interface.	To provide metadata about the connection type.
7	Unit 1: LangGraph Foundations & State Management	Lec1	Context	Which of the following is typically considered “Context” (metadata) rather than part of the “Messages” list in the State?	Easy	1	C	The latest query from the user.	The LLM’s suggested response.	user_id or max_iterations counter.	The result returned from a tool execution.
8	Unit 1: LangGraph Foundations & State Management	Lec1	Graph API	Which class is used to initialize a stateful graph workflow with a specific schema?	Easy	1	B	GraphWorkflow	StateGraph	LangChainGraph	MessageGraph
9	Unit 1: LangGraph Foundations & State Management	Lec1	Nodes	What does a Node typically do in a LangGraph execution step?	Easy	1	A	Reads the current state, processes it (LLM/tools), and returns an update.	Only routes traffic between other nodes without processing.	Permanently saves all session data to a physical database.	Renders the final output for the user.
10	Unit 1: LangGraph Foundations & State Management	Lec1	Graph API	What does the workflow.compile() method return?	Medium	1	C	A static JSON representation of the graph.	A standard Python dictionary.	A CompiledGraph (app) that can be invoked or streamed.	A direct connection to the underlying database.
11	Unit 1: LangGraph Foundations & State Management	Lec1	State	What is the core role of the messages field in a LangGraph State?	Easy	1	A	It is the core communication channel for I/O.	It stores API keys.	It defines the database schema.	It acts as a hardcoded counter.
12	Unit 1: LangGraph Foundations & State Management	Lec1	State	When should you use context fields instead of the messages list?	Medium	1	C	To track conversation history.	To store the compiled graph.	For configuration, metadata, and tracking.	To entirely replace the LLM.
13	Unit 1: LangGraph Foundations & State Management	Lec1	State	What is a primary characteristic of the built-in MemorySaver checkpointer?	Easy	1	B	It encrypts data to the cloud.	It stores data in-memory; lost on restart.	It requires PostgreSQL.	It is the standard for production.
14	Unit 1: LangGraph Foundations & State Management	Lec1	State	What attribute of the last message is checked to trigger tools?	Medium	1	D	status_code	system_prompt	error_log	tool_calls
15	Unit 1: LangGraph Foundations & State Management	Lec1	State	What are the standard sequential steps a node function follows?	Medium	1	A	Read messages, process, return deltas.	Render UI and capture clicks.	Connect to DB and drop tables.	Initialize checkpointer.
16	Unit 1: LangGraph Foundations & State Management	Lec1	State	How can agents identify their outputs in a shared messages list?	Hard	1	B	Appending their name to content.	Tagging the AIMessage with a name attribute.	Using separate state dicts.	Converting messages to numbers.
17	Unit 1: LangGraph Foundations & State Management	Lec1	State	Why is a checkpointer essential for a stateful LangGraph application?	Medium	1	C	It prevents hallucinations.	It translates output.	It allows state persistence and resumption.	It converts Python to JSON.
18	Unit 1: LangGraph Foundations & State Management	Lec1	State	What behavior does add_messages provide?	Hard	1	D	Deletes all old messages.	Translates messages.	Limits the array to 10 messages.	Appends new messages and handles deduplication.
19	Unit 1: LangGraph Foundations & State Management	Lec1	State	How can a developer visually inspect the structure of a compiled LangGraph app?	Easy	1	A	Using the draw_mermaid_png() method.	Printing the raw compile() output.	Reading system log files.	Checking the SQLite database.
20	Unit 1: LangGraph Foundations & State Management	Lec1	State	Which method determines the first node that executes in a StateGraph?	Easy	1	C	start_node()	init_graph()	set_entry_point()	add_first_edge()