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 5: Human-in-the-Loop & Persistence	Lec5	HITL	What is a primary use case for “Human-in-the-Loop” (HITL) mechanisms?	Easy	1	A	Approval of high-stakes actions (e.g., money transfers, data deletion).	Increasing the speed of the agent’s responses.	Reducing the number of tokens used by the LLM.	Replacing the LLM for simple tasks.
2	Unit 5: Human-in-the-Loop & Persistence	Lec5	Interrupts	In LangGraph, where can you set an “Interrupt” to pause execution?	Medium	1	B	Inside the LLM’s system prompt.	In the workflow.compile() method using interrupt_before or interrupt_after.	Only at the very beginning of the graph.	In the database configuration.
3	Unit 5: Human-in-the-Loop & Persistence	Lec5	Persistence	What is the role of a “Checkpointer” in a LangGraph application?	Easy	1	C	To check the code for syntax errors.	To maintain a list of active users.	To automatically persist and restore the graph state between executions.	To limit the rate of API calls.
4	Unit 5: Human-in-the-Loop & Persistence	Lec5	Isolation	How does LangGraph isolate different user conversations when using persistence?	Medium	1	B	By using different Python scripts for each user.	By using a unique thread_id in the configuration.	By creating a new database for every single turn.	By clearing the memory after every message.
5	Unit 5: Human-in-the-Loop & Persistence	Lec5	Resuming	How do you resume a graph execution after it has been paused for human approval?	Medium	1	C	Restarting the script from the beginning.	Calling a manual .resume() method on the graph object.	Invoking the graph again with the same thread_id and the human’s input (or None).	The graph resumes automatically after a timeout.
6	Unit 5: Human-in-the-Loop & Persistence	Lec5	State Updates	Which method allows an administrator to manually modify the state of a paused graph?	Hard	1	A	app.update_state(config, values)	app.set_state(values)	app.modify_history(config)	app.write_state(values)
7	Unit 5: Human-in-the-Loop & Persistence	Lec5	Time Travel	What does “Time Travel” refer to in LangGraph checkpointers?	Medium	1	B	Running the model with future data.	Inspecting or replaying the graph state from a specific past checkpoint ID.	Accelerating the LLM inference speed.	predicting the next 10 user messages.
8	Unit 5: Human-in-the-Loop & Persistence	Lec5	MemorySaver	What is the primary limitation of the MemorySaver checkpointer?	Easy	1	A	All state data is lost when the process or server is restarted.	It is too slow for use in development labs.	It requires a complex PostgreSQL setup.	It can only store one thread at a time.
9	Unit 5: Human-in-the-Loop & Persistence	Lec5	Savers	Which checkpointer is recommended for production environments requiring high availability and scalability?	Medium	1	D	MemorySaver	JsonSaver	FileSaver	PostgresSaver
10	Unit 5: Human-in-the-Loop & Persistence	Lec5	State Updates	What is the specific purpose of the as_node parameter in the update_state method?	Hard	1	B	To rename a node in the graph.	To simulate that the state update was generated by a specific node (e.g., for routing).	To delete a node from the workflow.	To create a temporary branch in the graph.
11	Unit 5: Human-in-the-Loop & Persistence	Lec5	HITL	Why is HITL required for financial transfers?	Easy	1	C	Grammar check.	System speed.	Oversight for irreversible actions.	Model training.
12	Unit 5: Human-in-the-Loop & Persistence	Lec5	Interrupts	interrupt_after pauses execution…	Medium	1	D	Before the first node.	After the LLM thinks.	When the API fails.	After a specific node finishes.
13	Unit 5: Human-in-the-Loop & Persistence	Lec5	Interrupts	What happens at an interrupt point?	Hard	1	A	Execution stops and returns to caller.	The program crashes.	Waits for keyboard input.	History is deleted.
14	Unit 5: Human-in-the-Loop & Persistence	Lec5	Savers	Benefit of SQLiteSaver over MemorySaver?	Medium	1	B	Distributed clusters.	Persistence via local file.	Native prompt execution.	Zero disk space.
15	Unit 5: Human-in-the-Loop & Persistence	Lec5	Isolation	Every thread in a checkpointer is unique by…	Medium	1	C	User IP.	System prompt.	thread_id.	Timestamp.
16	Unit 5: Human-in-the-Loop & Persistence	Lec5	State Updates	Manual state updates can…	Hard	1	D	Crash the graph.	Only be done by humans.	Change LLM weights.	Skip nodes or fix stuck workflows.
17	Unit 5: Human-in-the-Loop & Persistence	Lec5	Time Travel	To replay from a checkpoint, you need the…	Hard	1	A	thread_id and checkpoint_id.	Admin password.	Graph source code.	Python version.
18	Unit 5: Human-in-the-Loop & Persistence	Lec5	Persistence	A checkpoint contains state values and…	Hard	1	B	Prompt templates.	The next node to execute.	User emails.	API keys.
19	Unit 5: Human-in-the-Loop & Persistence	Lec5	Persistence	Long-term memory is often stored in…	Medium	1	C	The checkpointer.	System prompts.	External Vector Databases.	Python dictionaries.
20	Unit 5: Human-in-the-Loop & Persistence	Lec5	Savers	High availability systems use…	Easy	1	D	MemorySaver.	FileSaver.	thread_id only.	PostgresSaver with pooling.