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The DP-420 exam covers a wide range of topics related to Cosmos DB, including data modeling, partitioning, indexing, querying, and performance tuning. Candidates are expected to have a deep understanding of the underlying architecture of Cosmos DB and its various APIs, such as SQL, MongoDB, Cassandra, and Azure Table Storage. They should also be familiar with the best practices for designing and implementing cloud-native applications, such as microservices architecture, containerization, and serverless computing. Overall, the DP-420 certification exam is an excellent opportunity for professionals to showcase their expertise in cloud-native application development using Cosmos DB and advance their career in the field.
To prepare for the DP-420 exam, candidates should have experience with cloud-native application development and a strong understanding of Azure services. Microsoft offers a variety of training resources, including online courses, instructor-led training, and study guides. Candidates can also practice their skills using Azure Cosmos DB through the Azure portal or by using the Azure Cosmos DB Emulator.
Reference: https://docs.microsoft.com/en-us/learn/certifications/exams/dp-420?WT.mc_id=Azure_blog-wwl
To prepare for the DP-420 certification exam, candidates should have a solid understanding of cloud computing, distributed systems, and NoSQL databases. They should also be familiar with Microsoft Azure and have experience working with Azure Cosmos DB. Microsoft offers a range of training resources to help candidates prepare for the exam, including online courses, study guides, and practice exams.
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Microsoft DP-420 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Maintain an Azure Cosmos DB solution | 25-30% | - Monitor and troubleshoot Azure Cosmos DB solutions
|
| Design and implement data models | 35-40% | - Implement data access
|
| Integrate an Azure Cosmos DB solution | 5-10% | - Enable analytical workloads
|
| Design and implement data distribution | 5-10% | - Design and implement replication strategy
|
| Optimize an Azure Cosmos DB solution | 15-20% | - Optimize query performance
|
Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB Sample Questions:
You have an Azure subscription. The subscription contains an Azure Cosmos DB for NoSQL account named account1 that hosts a container named Container1. Container1 has a provisioned throughput of 100 request units per second (RU/s) and uses a single physical partition.
You are evaluating the available throughput for Container1.
What is the maximum burst capacity that Container1 can accumulate?
- A. 100,000 RU/s
- B. 300 RU/s
- C. 1,000 RU/s
- D. 30,000 RU/s
Correct Answer: B 🗳️
Explanation: Only visible for DumpExam members. You can sign-up / login (it's free).
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You have an Azure Cosmos DB for NoSQL account named account1 that uses autoscale throughput.
You need to run an Azure function when the normalized request units per second for a container in account1 exceeds a specific value.
Solution: You configure the function to have an Azure Cosmos DB trigger.
Does this meet the goal?
- A. Yes
- B. No
Correct Answer: B 🗳️
Explanation: Only visible for DumpExam members. You can sign-up / login (it's free).
Hotspot Question
You have a container that stores data about families.
The following is a sample document.
You run the following query against the container.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Correct Answer:
Explanation:
Box 1: Yes
The query return a value because "c" is represent the entire document and not only the parent's array.
Box 2: No
The cross join is not on the pets.
Box 3: Yes
The cross join is not on the pets.
Reference:
https://docs.microsoft.com/en-us/azure/cosmos-db/sql/sql-query-join
You have an Azure Cosmos DB for NoSQL account named account1 that supports an application named App1. App1 uses the consistent prefix consistency level.
You configure account1 to use a dedicated gateway and integrated cache.
You need to ensure that App1 can use the integrated cache.
Which two actions should you perform for App1? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
- A. Change the account endpoint to http://account1.documents.azure.com.
- B. Change the consistency level of requests to strong.
- C. Change the consistency level of requests to session.
- D. Change the account endpoint to http://account1.sqlx.cosmos.azure.com.
- E. Change the connection mode to direct.
Correct Answer: C,D 🗳️
Explanation: Only visible for DumpExam members. You can sign-up / login (it's free).
You have an Azure Cosmos DB for NoSQL account that uses a custom conflict resolution policy.
The account has a registered merge procedure that throws a runtime exception. The runtime exception prevents conflicts from being resolved.
You need to use an Azure function to resolve the conflicts.
What should you use?
- A. a function that pulls items from the conflicts feed and is triggered by a timer trigger
- B. a function that receives items pushed from the change feed and is triggered by an Azure Cosmos DB trigger
- C. a function that pulls items from the change feed and is triggered by a timer trigger
- D. a function that receives items pushed from the conflicts feed and is triggered by an Azure Cosmos DB trigger
Correct Answer: A 🗳️
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