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In Langchain, what is typically used to decide which node to route to next in a graph?

easy📝 Conceptual Q2 of 15
LangChain - LangGraph for Stateful Agents
In Langchain, what is typically used to decide which node to route to next in a graph?
AA random number generator
BA condition function returning True or False
CA fixed node index without conditions
DA user input prompt at runtime
Step-by-Step Solution
Solution:
  1. Step 1: Identify routing mechanism

    Routing decisions depend on condition functions that return True or False based on context.
  2. Step 2: Evaluate options

    Only the condition function returning True or False matches; others are unrelated or manual inputs.
  3. Final Answer:

    A condition function returning True or False -> Option B
  4. Quick Check:

    Routing decision = Condition function [OK]
Quick Trick: Routing uses condition functions returning True/False [OK]
Common Mistakes:
MISTAKES
  • Assuming routing is random
  • Thinking routing is fixed without conditions
  • Confusing user input with routing logic

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