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DP-420 考古題 You configure multi-region writes for account1.
You need to ensure that App1 supports the new configuration for account1. The solution must meet the business requirements and the product catalog requirements.
What should you do?
A. Set the default consistency level of account1 to bounded staleness.
B. Create a private endpoint connection.
C. Modify the connection policy of App1.
D. Increase the number of request units per second (RU/s) allocated to the con-product and con-productVendor containers.
Correct Answer: D
App1 queries the con-product and con-productVendor containers. 
Note: Request unit is a performance currency abstracting the system 
resources such as CPU, IOPS, and memory that are required to perform the database operations supported by Azure Cosmos DB.
Scenario:
Develop an app named App1 that will run from all locations and query the data in account1.
Once multi-region writes are configured, maximize the performance of App1 queries against the data in account1.
Whenever there are multiple solutions for a requirement, select the 
solution that provides the best performance, as long as there are no additional costs associated.
Incorrect Answers:
A:Bounded staleness relates to writes. App1 only do reads.
Note: Bounded staleness is frequently chosen by globally distributed applications that expect low write latencies but require total global order guarantee. Bounded staleness is great for applications featuring group collaboration and sharing, stock ticker, publish-subscribe/queueing etc.

Reference:
https://docs.microsoft.com/en-us/azure/cosmos-db/consistency-levels

DP-420 考古題 You have an Azure Cosmos DB Core (SQL) API account that has multiple write regions.
You need to receive an alert when requests that target the database exceed the available request units per second (RU/s).
Which Azure Monitor signal should you use?
A. Data Usage
B. Metadata Requests
C. Region Removed
D. Region Added
Correct Answer: B
Metric Metadata Requests: Count of metadata requests. Azure Cosmos DB maintains system metadata container for each account, that allows you to enumerate collections, databases, etc., and their configurations, free of charge.
Used to monitor throttles due to metadata requests.
Incorrect:
Not A: Metric Data Usage: Total data usage reported at 5-minutes granularity per region. Used to monitor total data usage at container and region, minimum granularity should be 5 minutes.
Reference:
https://docs.microsoft.com/en-us/azure/cosmos-db/monitor-cosmos-db-reference#metrics

DP-420 考古題 You have a container named container1 in an Azure Cosmos DB Core (SQL) API account.
You need to provide a user named User1 with the ability to insert items into container1 by using role-based access control (RBAC). The solution must use the principle of least privilege.
Which roles should you assign to User1?
A. CosmosDB Operator only
B. DocumentDB Account Contributor and Cosmos DB Built-in Data Contributor
C. DocumentDB Account Contributor only
D. Cosmos DB Built-in Data Contributor only
Correct Answer: A
Cosmos DB Operator: Can provision Azure Cosmos accounts, databases, and containers. Cannot access any data or use Data
Explorer.
Incorrect Answers:
B: DocumentDB Account Contributor can manage Azure Cosmos DB accounts. Azure Cosmos DB is formerly known as DocumentDB.
C: DocumentDB Account Contributor: Can manage Azure Cosmos DB accounts.
Reference:
https://docs.microsoft.com/en-us/azure/cosmos-db/role-based-access-control