DP-420問題トレーリング & DP-420関連復習問題集

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Microsoft DP-420 Exam Syllabus Topics:

Section	Weight	Objectives
Optimize an Azure Cosmos DB solution	15-20%	- Define and implement indexing strategy 1. Optimize index performance 2. Implement composite indexes 3. Choose read-heavy or write-heavy indexing 4. Choose appropriate index types 5. Configure custom indexing policies - Design and implement change feeds 1. Implement aggregation persistence 2. Develop Azure Functions triggers 3. Consume change feeds using SDK 4. Manage change feed instances - Optimize query performance 1. Adjust indexing policies 2. Calculate query cost 3. Implement integrated cache 4. Retrieve request unit cost
Design and implement data models	35-40%	- Plan and implement sizing and scaling 1. Evaluate global distribution costs 2. Design resource governance and scaling 3. Evaluate throughput and storage requirements 4. Configure throughput 5. Choose between serverless, provisioned, and free tier - Implement server-side programming 1. Implement triggers 2. Implement user-defined functions 3. Write and deploy stored procedures - Design and implement a non-relational data model for Azure Cosmos DB for NoSQL 1. Store multiple entity types in the same container 2. Store multiple related entities in the same document 3. Identify partition key, id, and unique keys 4. Identify data and associated access patterns 5. Reference between documents 6. Denormalize data across documents - Implement client connectivity options 1. Implement singleton client 2. Create database connections 3. Use Azure Cosmos DB emulator 4. Choose gateway or direct connectivity mode 5. Handle connection errors 6. Configure client-side threading and logging - Design a data partitioning strategy 1. Choose a partitioning strategy 2. Evaluate cross-partition query cost 3. Choose a partition key 4. Plan for transactions with partition keys 5. Evaluate throughput and data distribution 6. Implement synthetic partition keys - Implement data access 1. Implement patch operations 2. Implement optimistic concurrency control 3. Manage transactional batch operations 4. Implement SQL queries with arrays and aggregation 5. Use consistency and query request options 6. Use SDKs for CRUD operations
Integrate an Azure Cosmos DB solution	5-10%	- Enable analytical workloads 1. Query analytical store from Synapse 2. Enable analytical store 3. Write data back from Spark 4. Configure Azure Cosmos DB Mirroring - Implement solutions across services 1. Implement Azure AI Search integration 2. Integrate Azure Functions and Event Hubs 3. Aggregate and archive data 4. Enforce referential integrity 5. Use Change Feed for denormalization
Maintain an Azure Cosmos DB solution	25-30%	- Monitor and troubleshoot Azure Cosmos DB solutions 1. Troubleshoot throughput issues 2. Monitor metrics and logs 3. Monitor performance and availability 4. Implement backup and recovery strategies
Design and implement data distribution	5-10%	- Design and implement multi-region writes 1. Choose when to use multi-region writes 2. Implement conflict resolution policies 3. Implement multi-region writes - Design and implement replication strategy 1. Perform manual failovers 2. Evaluate consistency model impacts 3. Choose a consistency model 4. Choose when to distribute data 5. Define automatic failover policies

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Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB 認定 DP-420 試験問題 (Q118-Q123):

質問 # 118
Hotspot Question
You have an Azure Cosmos DB for NoSQL database that hosts a container named Container1.
Container1 stores order details, including the following properties:
- OrderNumber (a number)
- OrderDate (a date)
You need to write a query that returns the following for each order:
- OrderNumber
- PeriodDate (as the first day of the calendar year based on orderDate) How should you complete the query? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point

正解：

解説：

質問 # 119
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 a database in an Azure Cosmos DB for NoSQL account that is configured for multi- region writes.
You need to use the Azure Cosmos DB SDK to implement the conflict resolution policy for a container. The solution must ensure that any conflicts are sent to the conflicts feed.
Solution: You set ConflictResolutionMode to Custom. You set ResolutionProcedure to a custom stored procedure. You configure the custom stored procedure to use the isTombstone parameter to resolve conflicts.
Does this meet the goal?

A. Yes
B. No

正解：B

質問 # 120
You have an Azure Cosmos DB Core (SQL) API account named account1.
In account1, you run the following query in a container that contains 100GB of data.
SELECT *
FROM c
WHERE LOWER(c.categoryid) = " hockey "
You view the following metrics while performing the query.

For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.

正解：

解説：

Explanation:

Box 1: No
Each physical partition should have its own index, but since no index is used, the query is not cross-partition.
Box 2: No
Index utilization is 0% and Index Look up time is also zero.
Box 3: Yes
A partition key index will be created, and the query will perform across the partitions.
Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/sql/how-to-query-container

質問 # 121
You have an Azure Cosmos DB Core (SQL) API account named account1.
In account1, you run the following query in a container that contains 100GB of data.
SELECT *
FROM c
WHERE LOWER(c.categoryid) = "hockey"
You view the following metrics while performing the query.

For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.

正解：

解説：

質問 # 122
Vou have an Azure subscription. The subscription contains an Azure Cosmos DB for NoSQL account named account1 that hosts a container named Customers. Multi-region writes are allowed.
You execute the following C# code.

For each of the following statements, Select Yes if the statement is true, Otherwise, select No.
NOTE: Each correct selection is worth one point.

正解：

解説：

質問 # 123
......

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