This DP-900 practice question tests your understanding of describe considerations for working with non-relational data on azure. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
A retail company wants to store product catalog data in a non-relational format. The data includes product ID, name, description, price, and an array of tags. The data is frequently updated and must support low-latency reads and writes at global scale. Which Azure service should they use?
Azure Cosmos DB
Globally distributed NoSQL database with low-latency and JSON support.
Azure Table Storage
Why wrong: Limited query capabilities and no global distribution.
Azure Blob Storage
Why wrong: Not designed for frequent transactional updates.
Azure Cache for Redis
Why wrong: In-memory cache, not a durable data store.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure Cosmos DB
Option B is correct because Azure Cosmos DB is a globally distributed NoSQL database that supports low-latency reads/writes and can store JSON documents with arrays. Option A is wrong because Azure Blob Storage is for unstructured blob data, not transactional updates. Option C is wrong because Azure Table Storage is a key-value store but does not support complex queries or global distribution as well as Cosmos DB. Option D is wrong because Azure Cache for Redis is an in-memory cache, not a durable data store.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure Cosmos DB
Why this is correct
Globally distributed NoSQL database with low-latency and JSON support.
Related concept
Read the scenario before looking for a memorised answer.
Azure Table Storage
Why it's wrong here
Limited query capabilities and no global distribution.
Azure Blob Storage
Why it's wrong here
Not designed for frequent transactional updates.
Azure Cache for Redis
Why it's wrong here
In-memory cache, not a durable data store.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Identify which DP-900 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Describe considerations for working with non-relational data on Azure — This question tests Describe considerations for working with non-relational data on Azure — Read the scenario before looking for a memorised answer..
The correct answer is: Azure Cosmos DB — Option B is correct because Azure Cosmos DB is a globally distributed NoSQL database that supports low-latency reads/writes and can store JSON documents with arrays. Option A is wrong because Azure Blob Storage is for unstructured blob data, not transactional updates. Option C is wrong because Azure Table Storage is a key-value store but does not support complex queries or global distribution as well as Cosmos DB. Option D is wrong because Azure Cache for Redis is an in-memory cache, not a durable data store.
Identify which DP-900 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 2026
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