Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A global IoT platform ingests telemetry data from millions of devices. The application requires multi-region writes to support low-latency ingestion from any location. The schema uses JSON documents and fields often vary. The team needs automatic conflict resolution when the same document is updated concurrently from different regions. Additionally, read operations for device commands must use strong consistency, while user-facing dashboard queries can use eventual consistency. Which Azure Cosmos DB configuration 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
Distractor review
Azure Cosmos DB with single-master and multiple read regions
Single-master allows writes only in one region, so multi-region writes are not possible. This does not meet the low-latency ingestion requirement from all regions.
B
Distractor review
Azure Cosmos DB with multi-master and default strong consistency
While multi-master supports multi-region writes, default strong consistency would cause higher write latency due to synchronous replication across regions, which may not be optimal for all operations.
C
Best answer
Azure Cosmos DB with multi-master and per-request consistency override
Multi-master allows writes in any region and automatic conflict resolution. Per-request consistency override enables the application to use strong consistency for critical device command reads and eventual consistency for other reads, meeting all requirements.
D
Distractor review
Azure Cosmos DB with multi-master and eventual consistency only
Eventual consistency only cannot guarantee strong consistency for device command reads, which is required.
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 AZ-305 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
SAA-C03 VPC practice questions
Practise AZ-305 questions linked to SAA-C03 VPC.
SAA-C03 S3 lifecycle policy questions
Practise AZ-305 questions linked to SAA-C03 S3 lifecycle policy questions.
SAA-C03 RDS Multi-AZ questions
Practise AZ-305 questions linked to SAA-C03 RDS Multi-AZ questions.
SAA-C03 IAM policy practice questions
Practise AZ-305 questions linked to SAA-C03 IAM policy.
SAA-C03 Route 53 failover questions
Practise AZ-305 questions linked to SAA-C03 Route 53 failover questions.
SAA-C03 CloudFront practice questions
Practise AZ-305 questions linked to SAA-C03 CloudFront.
SAA-C03 NAT gateway questions
Practise AZ-305 questions linked to SAA-C03 NAT gateway questions.
SAA-C03 VPC endpoint questions
Practise AZ-305 questions linked to SAA-C03 VPC endpoint questions.
SAA-C03 Auto Scaling practice questions
Practise AZ-305 questions linked to SAA-C03 Auto Scaling.
SAA-C03 disaster recovery questions
Practise AZ-305 questions linked to SAA-C03 disaster recovery questions.
SAA-C03 high availability questions
Practise AZ-305 questions linked to SAA-C03 high availability questions.
SAA-C03 cost optimization questions
Practise AZ-305 questions linked to SAA-C03 cost optimization questions.
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.
Question 1
A company is designing hub-and-spoke networking. Spoke VNets must use a central Azure Firewall for outbound internet traffic. Which two configurations are required?
Question 2
A company is designing private access to a PaaS database from workloads in a VNet. The database should not be reachable over its public endpoint. What should be recommended?
Question 3
A data platform must support analytical queries over petabytes of files in a data lake, while preserving hierarchical namespaces and fine-grained ACLs. Which storage service should you design around?
Question 4
A database workload has an RPO of 15 minutes and an RTO of 4 hours. Cost is more important than near-zero data loss. Which design is usually more appropriate than synchronous multi-region replication?
Question 5
A hub-and-spoke Azure network must centralize outbound inspection and still allow spokes to resolve private endpoint DNS names. Which two components are commonly required? (Choose 2.)
Question 6
A multinational company uses Microsoft Entra ID and several Azure subscriptions. Security administrators need to review privileged role assignments every month and require justification for continued access. Which design should be recommended?
FAQ
Questions learners often ask
What does this AZ-305 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Azure Cosmos DB with multi-master and per-request consistency override — Azure Cosmos DB with multi-region writes (multi-master) enables writes in multiple regions with automatic conflict resolution. It supports multiple consistency levels, including strong and eventual. By setting the consistency at the request level using a programming model like the Azure Cosmos DB SDK, the application can enforce strong consistency for critical reads (device commands) and eventual consistency for others. Single-master configurations do not allow multi-region writes. Multi-master with only eventual consistency would not support strong consistency for device commands. Multi-master with default strong consistency would impose high latency globally. Per-request consistency override is the correct approach.
What should I do if I get this AZ-305 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
Discussion
Loading comments…
Sign in to join the discussion.