Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A social networking application stores user profiles as JSON documents in Azure Cosmos DB. Each profile includes fields such as 'userName', 'email', 'followersCount', and optional 'interests'. The application needs to perform fast point reads by 'userName' (under 10 ms) and also run queries to find all users with a 'followersCount' greater than a certain value. The development team prefers to use a query syntax similar to SQL. Which Azure Cosmos DB API should they choose?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
Azure Cosmos DB for NoSQL (SQL API)
Correct. The SQL API provides a SQL-like query interface for JSON documents, supporting point reads by partition key and flexible queries on any field.
B
Distractor review
Azure Cosmos DB for MongoDB
While MongoDB API also works with JSON, it uses MongoDB's query syntax and is not as tightly integrated with Azure SQL-like tools. For a SQL-like query preference, the SQL API is more appropriate.
C
Distractor review
Azure Cosmos DB for Table
The Table API is a key-value store that supports simple queries on partition and row keys, but does not support complex filtering on arbitrary fields like 'followersCount'.
D
Distractor review
Azure Cosmos DB for Apache Cassandra
The Cassandra API uses a wide-column data model and CQL query language. It is not optimized for JSON document queries and would require data modeling changes.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Related practice questions
Related DP-900 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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FAQ
Questions learners often ask
What does this DP-900 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Azure Cosmos DB for NoSQL (SQL API) — Azure Cosmos DB for NoSQL (formerly SQL API) natively supports JSON documents and provides a SQL-like query language that can filter on any field, including nested properties. It is ideal for this scenario because it combines low-latency point reads with flexible querying. The MongoDB API also supports JSON but uses a different query syntax and may require additional drivers. The Table API is a simple key-value store that does not support complex queries on arbitrary fields. The Cassandra API uses a wide-column model not well-suited for JSON documents.
What should I do if I get this DP-900 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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