AI-900 Describe features of Natural Language Processing workloads on Azure — 15 Questions

Question 1

A customer support team receives emails in multiple languages. They want to automatically determine the language of each email and then extract key phrases to summarize the issue. Which two Azure AI Language features should they use in sequence?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Language detection and key phrase extraction. The scenario requires first identifying the language of each email (using Language Detection) to enable accurate processing of multilingual content. Then, to summarize the issue, Key Phrase Extraction directly extracts key phrases from the text. The stem explicitly asks for 'extract key phrases to summarize the issue,' so only Language Detection followed by Key Phrase Extraction (Option C) achieves this. Option B uses Entity Extraction, which identifies entities like names or dates but does not extract key phrases for summarization. Options A and D are incorrect because Sentiment Analysis is not used for summarization, and starting with Entity Extraction without language detection is less effective.

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Sentiment analysis and key phrase extraction

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Language detection and entity extraction

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Entity extraction and sentiment analysis

Question 2

A customer service team wants to analyze chat transcripts to understand customer sentiment and identify the most frequently discussed topics. Which two Azure AI Language features should they combine to achieve this?

Accepted Answer

Sentiment analysis and key phrase extraction. To understand customer sentiment and identify frequently discussed topics, the required features are sentiment analysis (to detect emotional tone) and key phrase extraction (to surface important terms/topics). Option A provides this pair. Option B (language detection and entity extraction) does not include sentiment analysis, so it cannot assess customer sentiment. Options C and D are also unsuitable because they lack sentiment analysis and do not directly address both requirements.

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Language detection and entity extraction

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Text summarization and question answering

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Named entity recognition and translation

Question 3

A customer support team wants to automatically analyze incoming emails to (1) determine the overall emotional tone (e.g., frustrated, satisfied) and (2) identify specific key phrases that indicate the reason for contact (e.g., 'return item', 'refund policy'). Which two Azure AI Language features should they use? (Choose two.)

Accepted Answer

Sentiment analysis. Sentiment analysis is correct because it evaluates text to determine the overall emotional tone, such as frustration or satisfaction, by assigning a sentiment score (positive, negative, neutral, or mixed) at the document and sentence level. Key phrase extraction is correct because it identifies the most relevant phrases in the text, such as 'return item' or 'refund policy', which directly map to the customer's reason for contact. Entity recognition identifies predefined entities like people or locations, and language detection determines the language, neither of which addresses the requirements.

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Entity recognition

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Language detection

Question 4

A customer support team wants to automatically analyze thousands of product reviews. Their goal is to extract the most frequently mentioned topics (e.g., 'battery life', 'customer service', 'screen quality') without manually reading each review. Which Azure AI Language feature should they use?

Accepted Answer

Key phrase extraction. Key phrase extraction is the correct Azure AI Language feature because it automatically identifies the main points or topics (e.g., 'battery life', 'customer service', 'screen quality') from unstructured text. This directly meets the requirement to extract frequently mentioned topics from thousands of product reviews without manual reading.

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Sentiment analysis

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Language detection

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Entity recognition

Question 5

A news agency publishes hundreds of articles daily. They want to automatically determine the main topics discussed in each article, such as 'politics', 'economy', or 'sports', without manually tagging them. The agency has no labeled training data. Which built-in Azure AI Language feature should they use?

Accepted Answer

Key phrase extraction. Key phrase extraction is the correct choice because it automatically identifies the main topics or themes in a document without requiring any labeled training data. The news agency can use this built-in Azure AI Language feature to extract key phrases like 'politics', 'economy', or 'sports' from each article, enabling automatic topic categorization without manual tagging.

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Sentiment analysis

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Named entity recognition

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Language detection

Question 6

What is 'custom text classification' in Azure AI Language?

Accepted Answer

Training a model on labelled examples to classify documents into custom business-specific categories. Custom text classification in Azure AI Language allows you to train a model using your own labeled data to classify documents into categories that are specific to your business needs, such as contract types, customer feedback themes, or support ticket priorities. This is a supervised learning capability where you provide examples of text and their corresponding categories, and the service learns to predict the category for new, unseen text. It is not a pre-built or universal classifier, but rather a tailored solution for domain-specific classification tasks.

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Automatically applying CSS classes to text displayed on a web page

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Classifying text files by their file type (PDF, Word, TXT)

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A pre-built classifier that categorises all text into 10 universal topics

Question 7

What is 'conversational language understanding' (CLU) in Azure AI Language?

Accepted Answer

A model that extracts user intent and entities from conversational text to drive chatbot logic. Conversational language understanding (CLU) is a feature of Azure AI Language that enables you to build custom models to extract user intents (e.g., 'BookFlight') and entities (e.g., 'destination city') from natural language utterances. This extracted information drives the logic of a chatbot or virtual assistant, allowing it to determine what action to take. Option B correctly describes this core purpose.

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A chatbot that understands multiple languages and auto-translates responses

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A service that generates conversation transcripts from audio recordings

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A tool for analysing the sentiment of customer conversations in real time

Question 8

What is 'semantic role labelling' (SRL) and why is it important for language understanding?

Accepted Answer

Identifying who did what to whom, when, and where by assigning roles to sentence participants. Semantic role labeling (SRL) is a natural language processing technique that identifies the predicate-argument structure in a sentence, assigning roles such as agent, patient, instrument, location, and time to sentence constituents. It is important for language understanding because it enables a machine to answer 'who did what to whom, when, and where,' which is foundational for tasks like information extraction, question answering, and event detection. Note that Azure AI services do not expose SRL as a primary API capability; it is a more specialized NLP technique.

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Labelling training data with semantic tags for custom NLP model training

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Classifying the semantic category (positive, negative, neutral) of each sentence role

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Assigning roles and responsibilities to team members in an AI project

Question 9

What is 'abstractive question answering' vs 'extractive question answering' in Azure AI Language?

Accepted Answer

Extractive returns a quoted text span; abstractive generates a new synthesised answer. Extractive question answering (QA) identifies and returns a verbatim text span from the source document as the answer, while abstractive QA generates a new, synthesized answer in natural language that may not appear verbatim in the source. Azure AI Language's custom question answering is extractive; abstractive QA is typically performed by generative AI models.

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Extractive works on short texts; abstractive handles long documents

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Abstractive QA is faster because it doesn't need to search the full document

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Extractive is pre-built; abstractive always requires custom model training

Question 10

What is 'Azure AI Bot Service' and how does it relate to Azure AI Language?

Accepted Answer

The conversation infrastructure platform that uses Azure AI Language for NLP understanding. Azure AI Bot Service is a comprehensive platform for building, deploying, and managing conversational bots. It relies on Azure AI Language (specifically the Language Understanding (LUIS) service) to perform natural language processing (NLP) — interpreting user intents and extracting entities from utterances. This integration allows the bot to understand and respond to natural language input, making option B correct.

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A hosting service for training NLP models on conversational data

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A monitoring service that tracks bot conversation quality metrics

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Azure's billing service for tracking bot API call usage and costs

Question 11

A healthcare organization needs to extract specific data elements (such as patient names, medication dosages, and dates) from unstructured doctors' notes. Which Azure Cognitive Service is best suited for this task?

Accepted Answer

Text Analytics. Text Analytics (now part of Azure AI Language) is the correct service because it provides pre-built entity extraction capabilities specifically designed to identify and extract named entities like people (patient names), quantities (medication dosages), and dates from unstructured text. This aligns directly with the requirement to extract specific data elements from doctors' notes without needing custom model training.

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Language Understanding (LUIS)

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Translator Text

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Speech

Question 12

A hospital wants to create a system that can transcribe doctor-patient conversations in real time and also extract medical conditions, medications, and dosages from the transcribed text. Which combination of Azure AI services should they use?

Accepted Answer

Speech to Text and Text Analytics for Health. The scenario requires real-time transcription of doctor-patient conversations, which is handled by Azure Speech to Text, and then extraction of medical entities like conditions, medications, and dosages from the transcribed text, which is specifically provided by Azure Text Analytics for Health. Text Analytics for Health is a specialized container or API within Azure Cognitive Services that uses medical ontologies (e.g., UMLS, SNOMED CT) to extract clinical entities, unlike the standard Text Analytics API which only extracts general entities like names or locations.

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Speech to Text and Text Analytics API (standard)

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Translator Text and Language Understanding (LUIS)

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Speaker Recognition and Question Answering

Question 13

A customer service team wants to build an Azure AI-powered bot that can understand the intent behind customer messages. For example, the bot should recognize that 'I want to return my shoes' maps to a 'ReturnItem' intent, and 'Where is my order?' maps to 'TrackOrder'. Which Azure service provides pre-built models specifically for intent recognition?

Accepted Answer

Language Understanding (LUIS). Language Understanding (LUIS) is the correct Azure service because it provides pre-built models and custom capabilities specifically designed for intent recognition and entity extraction from natural language utterances. The scenario requires mapping customer messages like 'I want to return my shoes' to a 'ReturnItem' intent, which is exactly the core function of LUIS—it analyzes user input to identify the user's goal (intent) and any relevant details (entities).

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Text Analytics

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Translator Text

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Speech-to-text

Question 14

An online news platform receives thousands of articles daily. The editors want to automatically identify the most important topics discussed in each article to help with content categorization. Which Azure Text Analytics capability should they use?

Accepted Answer

Key Phrase Extraction. Key Phrase Extraction (B) is the correct Azure Text Analytics capability because it identifies the most important topics and main points discussed in a document by returning a list of key phrases that summarize the core content. For an online news platform needing to automatically detect topics for categorization, this directly extracts the salient subjects from each article, unlike other capabilities that focus on sentiment, named entities, or language identification.

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Sentiment Analysis

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Named Entity Recognition

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Language Detection

Question 15

A company's HR department wants to create a self-service bot that can answer employee questions about company policies. They have a collection of policy documents in PDF format. Which Azure AI Language feature should they use to ingest these documents and enable the bot to provide answers based on them?

Accepted Answer

Custom Question Answering. Custom Question Answering (CQA) is the correct choice because it is specifically designed to ingest documents (including PDFs) and build a knowledge base of question-answer pairs. The bot can then query this knowledge base to provide answers based on the policy documents, using the underlying Azure Cognitive Search and language models to match user questions to the most relevant content.

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Sentiment Analysis

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Key Phrase Extraction

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Language Detection