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Exam Databricks-Generative-AI-Engineer-Associate Topic 1 Question 1 Discussion

Actual exam question for Databricks's Databricks-Generative-AI-Engineer-Associate exam
Question #: 1
Topic #: 1
A Generative AI Engineer is experimenting with using parameters to configure an agent in Mosaic Agent Framework. However, they are struggling to get the agent to respond with relevant information with this configuration:
config = {"prompt_template": "You are a trivia bot. Generate a question based on the user's input: {user_input}", "input_vars": ["user_input"], "parameters": {"temperature": 0.01, "max_tokens": 500}} Which error is causing the problem?

Suggested Answer: A Vote an answer

In the Mosaic AI Agent Framework and underlying LangChain-based configurations, the "input_vars" or "input_variables" must be correctly mapped and referenced within the template. If the configuration dictionary identifies user_input as the variable but the logic executing the chain does not correctly "inject" the runtime value into the {user_input} placeholder, the LLM will receive a literal string (or an empty value) rather than the user's actual question. This results in the model failing to provide relevant information because it essentially doesn't know what the user asked. Engineering standards require ensuring that the key used in the input_vars list matches the key in the JSON payload sent to the model serving endpoint. If there is a mismatch or a failure to parse, the prompt remains static, leading to generic or irrelevant responses.

by Roy at Mar 05, 2026, 01:25 AM

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