Master the Microsoft Certified: Azure Cosmos DB Developer Specialty exam with our comprehensive Q&A collection. Review questions by topic, understand explanations, and build confidence for exam day.
Strategies to help you tackle Microsoft Certified: Azure Cosmos DB Developer Specialty exam questions effectively
Allocate roughly 1-2 minutes per question. Flag difficult questions and return to them later.
Pay attention to keywords like 'MOST', 'LEAST', 'NOT', and 'EXCEPT' in questions.
Use elimination to narrow down choices. Often 1-2 options can be quickly ruled out.
Focus on understanding why answers are correct, not just memorizing facts.
Practice with real exam-style questions for Microsoft Certified: Azure Cosmos DB Developer Specialty
Embedding line items and shipping details within the order document is correct because this data has a 1-to-many relationship that is always accessed together, making it an ideal candidate for embedding. This approach reduces the number of requests and provides atomic transactions. Option A is incorrect because Cosmos DB JOIN operations only work within a single document/container, not across containers. Option C is wasteful and doesn't scale properly. Option D adds unnecessary complexity when embedding provides better performance for this access pattern.
Changing to a composite partition key (like /deviceId and /timestamp) or creating a synthetic partition key is the best solution because it distributes the data from the hot device across multiple logical partitions, fundamentally solving the hot partition problem. Options A and C only add more throughput but don't solve the underlying issue that one logical partition is receiving disproportionate traffic (a logical partition has a maximum of 10GB storage and 10,000 RU/s). Option D addresses the symptom but not the data distribution problem and may not be feasible for legitimate high-volume devices.
Using the _etag system property with the If-Match header is the correct approach for optimistic concurrency control in Cosmos DB. The _etag changes with every modification, and including it in the If-Match header ensures the update only succeeds if the document hasn't changed since it was read. Option A (_ts) is a timestamp that could theoretically be used but _etag is the proper mechanism designed for this purpose. Option C adds unnecessary overhead when _etag is built-in. Option D describes pessimistic locking which is not the pattern requested and is more complex to implement correctly.
Azure Database Migration Service in online mode is the best choice for this scenario because it supports MongoDB to Cosmos DB for MongoDB migrations with minimal downtime by performing an initial full load followed by continuous replication of changes until cutover. Option A could work but DMS is specifically designed for database migrations with better change data capture capabilities. Option B (Data Migration Tool) doesn't support minimal downtime scenarios as it's for one-time migrations. Option D requires application downtime and is more manual, making it unsuitable for minimal downtime requirements.
Adding composite indexes for properties used together in filter conditions is the correct optimization. Composite indexes are specifically designed for queries that filter, sort, or group by multiple properties, significantly reducing RU consumption and improving performance. Option B (lazy indexing) is deprecated and doesn't solve the indexing coverage problem. Option C increases cost without addressing the root cause. Option D would dramatically worsen performance by requiring full scans and moving processing to the application layer.
Review Q&A organized by exam domains to focus your study
35% of exam • 3 questions
What is the primary purpose of Design and Implement Data Models in Cloud Computing?
Design and Implement Data Models serves as a fundamental component in Cloud Computing, providing essential capabilities for managing, configuring, and optimizing Microsoft Azure solutions. Understanding this domain is crucial for the Microsoft Certified: Azure Cosmos DB Developer Specialty certification.
Which best practice should be followed when implementing Design and Implement Data Models?
When implementing Design and Implement Data Models, follow the principle of least privilege, ensure proper documentation, implement monitoring and logging, and regularly review configurations. These practices help maintain security and operational excellence.
How does Design and Implement Data Models integrate with other Microsoft Azure services?
Design and Implement Data Models integrates seamlessly with other Microsoft Azure services through APIs, shared authentication, and native connectors. This integration enables comprehensive solutions that leverage multiple services for optimal results.
20% of exam • 3 questions
What is the primary purpose of Design and Implement Data Distribution in Cloud Computing?
Design and Implement Data Distribution serves as a fundamental component in Cloud Computing, providing essential capabilities for managing, configuring, and optimizing Microsoft Azure solutions. Understanding this domain is crucial for the Microsoft Certified: Azure Cosmos DB Developer Specialty certification.
Which best practice should be followed when implementing Design and Implement Data Distribution?
When implementing Design and Implement Data Distribution, follow the principle of least privilege, ensure proper documentation, implement monitoring and logging, and regularly review configurations. These practices help maintain security and operational excellence.
How does Design and Implement Data Distribution integrate with other Microsoft Azure services?
Design and Implement Data Distribution integrates seamlessly with other Microsoft Azure services through APIs, shared authentication, and native connectors. This integration enables comprehensive solutions that leverage multiple services for optimal results.
25% of exam • 3 questions
What is the primary purpose of Integrate Azure Cosmos DB Solutions in Cloud Computing?
Integrate Azure Cosmos DB Solutions serves as a fundamental component in Cloud Computing, providing essential capabilities for managing, configuring, and optimizing Microsoft Azure solutions. Understanding this domain is crucial for the Microsoft Certified: Azure Cosmos DB Developer Specialty certification.
Which best practice should be followed when implementing Integrate Azure Cosmos DB Solutions?
When implementing Integrate Azure Cosmos DB Solutions, follow the principle of least privilege, ensure proper documentation, implement monitoring and logging, and regularly review configurations. These practices help maintain security and operational excellence.
How does Integrate Azure Cosmos DB Solutions integrate with other Microsoft Azure services?
Integrate Azure Cosmos DB Solutions integrates seamlessly with other Microsoft Azure services through APIs, shared authentication, and native connectors. This integration enables comprehensive solutions that leverage multiple services for optimal results.
20% of exam • 3 questions
What is the primary purpose of Optimize Azure Cosmos DB Solutions in Cloud Computing?
Optimize Azure Cosmos DB Solutions serves as a fundamental component in Cloud Computing, providing essential capabilities for managing, configuring, and optimizing Microsoft Azure solutions. Understanding this domain is crucial for the Microsoft Certified: Azure Cosmos DB Developer Specialty certification.
Which best practice should be followed when implementing Optimize Azure Cosmos DB Solutions?
When implementing Optimize Azure Cosmos DB Solutions, follow the principle of least privilege, ensure proper documentation, implement monitoring and logging, and regularly review configurations. These practices help maintain security and operational excellence.
How does Optimize Azure Cosmos DB Solutions integrate with other Microsoft Azure services?
Optimize Azure Cosmos DB Solutions integrates seamlessly with other Microsoft Azure services through APIs, shared authentication, and native connectors. This integration enables comprehensive solutions that leverage multiple services for optimal results.
After reviewing these questions and answers, challenge yourself with our interactive practice exams. Track your progress and identify areas for improvement.
Common questions about the exam format and questions
The Microsoft Certified: Azure Cosmos DB Developer Specialty exam typically contains 50-65 questions. The exact number may vary, and not all questions may be scored as some are used for statistical purposes.
The exam includes multiple choice (single answer), multiple response (multiple correct answers), and scenario-based questions. Some questions may include diagrams or code snippets that you need to analyze.
Questions are weighted based on the exam domain weights. Topics with higher percentages have more questions. Focus your study time proportionally on domains with higher weights.
Yes, most certification exams allow you to flag questions for review and return to them before submitting. Use this feature strategically for difficult questions.
Practice questions are designed to match the style, difficulty, and topic coverage of the real exam. While exact questions won't appear, the concepts and question formats will be similar.
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