Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A global gaming company develops a multiplayer game. Player profile data (username, email, preferences) is stored as simple key-value pairs and must be accessible with single-digit millisecond latency from any region. Game session logs are stored as JSON documents with varying fields (session ID, player actions, timestamps) and must be queryable by player ID and timestamp range using SQL-like syntax. The company wants to use a single Azure database service for both workloads. Which combination of Azure Cosmos DB APIs 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
Table API for profiles and SQL API for logs
The Table API provides key-value storage with single-digit millisecond latencies, ideal for player profiles. The SQL API supports JSON documents and full SQL query syntax, perfect for querying session logs by player ID and timestamp.
B
Distractor review
SQL API for both profiles and logs
While the SQL API can store both, it is not optimized for simple key-value lookups with the same performance as the Table API. Using the SQL API for profiles would still work but would be less efficient and more costly for simple reads.
C
Distractor review
MongoDB API for profiles and Cassandra API for logs
The MongoDB API is document-based and can handle JSON, but it is not as simple as the Table API for key-value. The Cassandra API is column-family and does not natively support SQL-like querying on JSON documents; it is designed for wide-column workloads.
D
Distractor review
Table API for both profiles and logs
The Table API only supports simple key-value lookups and does not support querying nested JSON properties or SQL-like syntax. It cannot handle the querying requirements for session logs.
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: Table API for profiles and SQL API for logs — Azure Cosmos DB supports multiple APIs for different data models. For key-value pairs with low-latency global access, the Table API is ideal. For JSON documents with SQL querying capability, the SQL (Core) API is best. They can use two Azure Cosmos DB accounts, one with Table API for profiles and one with SQL API for logs. The other options either mismatch capabilities or introduce unnecessary complexity.
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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