- A
A bot channel registration or web app to interact with users
A client interface is needed for users to submit questions.
- B
An Azure AI Language Service resource
The Language Service hosts the Custom Question Answering feature.
- C
A set of FAQ documents or web pages as the knowledge source
Knowledge sources provide the content for Q&A.
- D
An Azure AI Search index
Why wrong: Custom Question Answering uses its own built-in index.
- E
An Azure Functions app for serverless compute
Why wrong: Azure Functions is not required for the core Q&A functionality.
Question 977 of 993
AI-102 Practice Question: Implement natural language processing solutions
This AI-102 practice question tests your understanding of implement natural language processing solutions. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE components are required to build a custom question-answering solution using Azure AI Language Service?
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
✓
A bot channel registration or web app to interact with users
Option A is correct because a bot channel registration or web app is the front-end interface that allows users to submit questions and receive answers from the custom QnA solution. Without this interaction layer, the knowledge base cannot be queried by end users, making it an essential component for a complete solution.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A bot channel registration or web app to interact with users
Why this is correct
A client interface is needed for users to submit questions.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
An Azure AI Language Service resource
Why this is correct
The Language Service hosts the Custom Question Answering feature.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
A set of FAQ documents or web pages as the knowledge source
Why this is correct
Knowledge sources provide the content for Q&A.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
An Azure AI Search index
Why it's wrong here
Custom Question Answering uses its own built-in index.
- ✗
An Azure Functions app for serverless compute
Why it's wrong here
Azure Functions is not required for the core Q&A functionality.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume Azure AI Search is mandatory because it is used in other Azure AI services like Cognitive Search, but for custom question answering the search index is automatically provisioned and managed by the Language Service itself.
Detailed technical explanation
How to think about this question
The Azure AI Language Service's custom question answering feature uses a dedicated QnA Maker runtime that stores question-answer pairs in an Azure Search index managed internally by the service. When a user submits a query via the bot or web app, the service applies semantic ranking and confidence scoring to return the most relevant answer, all without requiring the user to provision or manage an external Azure AI Search resource.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
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FAQ
Questions learners often ask
What does this AI-102 question test?
Implement natural language processing solutions — This question tests Implement natural language processing solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A bot channel registration or web app to interact with users — Option A is correct because a bot channel registration or web app is the front-end interface that allows users to submit questions and receive answers from the custom QnA solution. Without this interaction layer, the knowledge base cannot be queried by end users, making it an essential component for a complete solution.
What should I do if I get this AI-102 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jul 4, 2026
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