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Microsoft DP-420 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Design and implement data distribution5-10%- Manage data distribution and failover
  • 1. Define failover priorities
  • 2. Manage regional availability
- Design replication strategy
  • 1. Implement multi-region write
  • 2. Configure multi-region replication
Topic 2: Integrate an Azure Cosmos DB solution5-10%- Integrate with Azure services
  • 1. Connect to Azure Stream Analytics
  • 2. Use with Azure Functions, Logic Apps, Event Hubs
- Enable analytical workloads
  • 1. Use Synapse Link
  • 2. Configure analytical store
Topic 3: Design and implement data models35-40%- Design partitioning strategy
  • 1. Choose partition key based on workload
  • 2. Plan for distribution and throughput
- Plan sizing and scaling
  • 1. Provision throughput and storage
  • 2. Select consistency levels
- Design and implement non-relational data models
  • 1. Embed related entities in documents
  • 2. Configure time-to-live (TTL)
  • 3. Identify data and access patterns
  • 4. Store multiple entity types in one container
  • 5. Reference between documents
  • 6. Denormalize data across documents
  • 7. Define primary and unique keys
- Implement connectivity and data access
  • 1. Write efficient SQL queries
  • 2. Use SDKs to connect and operate
Topic 4: Maintain an Azure Cosmos DB solution25-30%- DevOps and automation
  • 1. Deploy via ARM, Bicep, CLI
  • 2. Automate operations
- Implement security
  • 1. Encrypt data at rest and in transit
  • 2. Manage authentication and authorization
- Monitor and troubleshoot
  • 1. Analyze metrics and logs
  • 2. Use Azure Monitor and Application Insights
- Implement backup and restore
  • 1. Perform point-in-time restore
  • 2. Configure periodic backup
- Manage data movement
  • 1. Migrate between APIs or regions
  • 2. Import/export data
Topic 5: Optimize an Azure Cosmos DB solution15-20%- Define and implement indexing strategy
  • 1. Select index types and paths
  • 2. Exclude or include properties
- Work with change feed
  • 1. Process changes incrementally
  • 2. Trigger downstream workflows
- Optimize query performance
  • 1. Optimize throughput allocation
  • 2. Tune query structure and syntax

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Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB 認定 DP-420 試験問題 (Q112-Q117):

質問 # 112
You have an Azure Cosmos DB database that contains a container named container1. The container1 container is configured with a maximum of 20,000 RU/s and currently contains 240 GB of data.
You need to estimate the costs of container1 based on the current usage.
How many RU/s will be charged?

正解：B


質問 # 113
The settings for a container in an Azure Cosmos DB Core (SQL) API account are configured as shown in the following exhibit.

Which statement describes the configuration of the container?

正解：D

解説：
When DefaultTimeToLive is -1 then your Time to Live setting is On (No default) Time to Live on a container, if present and the value is set to "-1", it is equal to infinity, and items don't expire by default.
Time to Live on an item:
This Property is applicable only if DefaultTimeToLive is present and it is not set to null for the parent container.
If present, it overrides the DefaultTimeToLive value of the parent container.
Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/sql/time-to-live


質問 # 114
You have an Azure Cosmos DB for NoSQL container. The container contains items that have the following properties.

You need to protect the data stored in the container by using Always Encrypted. For each property, you must use the strongest type of encryption and ensure that queries execute properly.
What is the strongest type of encryption that you can apply to each property? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

正解：

解説：

Explanation
Box 1 = Randomized
Box 2 = Deterministic
Always Encrypted for Azure Cosmos DB supports two types of encryption: deterministic and randomized1.
Deterministic encryption always produces the same encrypted value for any given plain text value.
Randomized encryption produces a different encrypted value for the same plain text value.
For dateOfBirth, randomized encryption is the strongest type of encryption because it provides better protection against statistical analysis and brute-force attacks. Deterministic encryption would not be suitable for dateOfBirth because it could reveal patterns or allow equality comparisons1.
For healthStatus, deterministic encryption is the strongest type of encryption because it allows queries to perform equality comparisons and filters on the encrypted property. Randomized encryption would not be suitable for healthStatus because it would prevent any queries on the encrypted property1.


質問 # 115
You have an Azure Cosmos DB for NoSQL account.
You need to implement Always Encrypted for all the data stored in the account. The solution must minimize administrative effort.
At which level should you define the encryption policy and set the data encryption key? To answer, drag the appropriate levels to the correct requirements. Each level may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.

正解：

解説：

Explanation:


質問 # 116
You plan to use a multi-region Azure Cosmos DB for NoSQL account to store data for a new application suite.
The suite contains the applications shown in the following table.

Each application should use the weakest consistency level possible.
Which consistency level should you configure for each application? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

正解：

解説：

Explanation


質問 # 117
......

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