AI-200 Data Management Services And Vector Search Practice Question
You are evaluating data layer architectures for an enterprise AI application that requires both vector search and structured transactional data management. Which THREE criteria favor choosing Azure Cosmos DB over Azure AI Search as the primary database? (Choose three)
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
✓
Need for sub-10 millisecond point reads and writes on operational business records
Azure Cosmos DB is preferred when you need ACID transactions, low-latency point reads/writes on transactional records, and native NoSQL document storage alongside vector search.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Need for sub-10 millisecond point reads and writes on operational business records
Why this is correct
Cosmos DB is designed for low-latency operational CRUD workloads.
- ✓
Requirement to store and query arbitrary JSON operational documents alongside vectors
Why this is correct
Cosmos DB is a fully-fledged NoSQL document database.
- ✗
Requirement for advanced BM25 keyword search and neural semantic re-ranking
Why it's wrong here
Advanced BM25 and semantic re-ranking are strengths of Azure AI Search, not Cosmos DB.
- ✓
Requirement for multi-document ACID transactions within a transactional boundary
Why this is correct
Cosmos DB supports stored procedures and transactional batches, whereas Azure AI Search is a search engine, not a transactional database.
- ✗
Requirement to generate automatic PDF text extraction and document chunking via indexers
Why it's wrong here
Document chunking and parsing via indexers are native features of Azure AI Search.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Microsoft exam blueprint
This AI-200 practice question is part of Courseiva's free Microsoft 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 AI-200 exam.