Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A social media application uses Azure Cosmos DB to store user posts. When a user publishes a new post, they immediately refresh their feed and expect to see their own post right away. However, the application can tolerate temporary staleness for posts from other users. Which Azure Cosmos DB consistency level should the app use for the read operations that display the feed?
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
Distractor review
Strong
Strong consistency provides linearizability for all reads, but it comes with higher latency and availability trade-offs. It is overkill for this scenario because the application only needs immediate consistency for the user's own posts.
B
Distractor review
Bounded staleness
Bounded staleness allows reads to lag behind writes by a defined time interval or number of versions. While it can be tuned, it does not guarantee immediate visibility of the user's own writes within the same session without additional session context.
C
Best answer
Session
Session consistency guarantees that within the same client session, reads will see the latest writes. This means the user will always see their own post immediately, while reads of other users' posts may be stale. This is the most cost-effective and correct choice.
D
Distractor review
Eventual
Eventual consistency provides no ordering guarantee. A user might not see their own latest post immediately after a refresh, which violates the requirement.
Common exam trap
Common exam trap: answer the scenario, not the keyword
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.
Technical deep dive
How to think about this question
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.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
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?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Session — Session consistency ensures that within the same client session, monotonic reads and monotonic writes are guaranteed. This means that a user will always read their own latest writes (because the read and write happen in the same session). For writes from other sessions, Session consistency allows eventual consistency. This perfectly matches the requirement: the user sees their own post immediately but can tolerate stale data from others. Strong consistency would guarantee linearizability for all reads, but it is more expensive and may not be needed. Bounded staleness allows a configurable lag, but it does not guarantee that the user sees their own writes immediately within the same session without additional logic. Eventual consistency does not guarantee that the user sees their own write immediately.
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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