AI0-001 Implementing AI Solutions Practice Question
An AI developer is building an agent that can book flights and hotels by calling external APIs. The agent needs to decide which API to call and in what order based on user requests. Which pattern is BEST suited for this multi-step reasoning and tool use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Apply the ReAct pattern (Reasoning and Acting)
The ReAct pattern (Reasoning + Acting) combines chain-of-thought reasoning with tool use, allowing the agent to plan, call APIs, and incorporate results. Function calling alone doesn't provide multi-step reasoning. Simple RAG is for retrieval, not action. Fine-tuning doesn't give dynamic tool selection.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Implement a simple Retrieval-Augmented Generation (RAG) pipeline
Why it's wrong here
RAG is for retrieving information from a knowledge base, not for taking actions like calling APIs.
- ✗
Fine-tune a model to output API call sequences directly
Why it's wrong here
Fine-tuning would require labeled data for many scenarios and lacks the flexibility to handle novel user requests; the model would not be able to reason about new situations.
- ✗
Use function calling with a fixed sequence of API calls
Why it's wrong here
Function calling allows the model to invoke functions but without multi-step reasoning; a fixed sequence lacks flexibility.
- ✓
Apply the ReAct pattern (Reasoning and Acting)
Why this is correct
ReAct interleaves reasoning steps (thinking about what to do next) with actions (calling APIs), enabling dynamic multi-step workflows.
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This AI0-001 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AI0-001 exam.