A company runs a Cosmos DB account with a single write region in East US and a read region in West US. The company is planning a maintenance window for East US and wants to temporarily make West US the write region. The company wants to avoid any downtime and ensure that the application continues to work during the maintenance. What should the company do?

Update the application's connection string to point to West US during the maintenance window.

Enable automatic failover and wait for the system to detect the maintenance.

Perform a manual failover to West US before the maintenance window, then perform a manual failover back to East US after maintenance.

Enable multi-region writes and let the SDK route writes to West US.

A company runs a real-time chat application on Azure Cosmos DB with multiple write regions. The application requires low write latency and tolerates occasional stale reads. The team is considering changing from Eventual to Bounded staleness to reduce the maximum staleness. What is the primary trade-off they should consider?

Bounded staleness will have no impact on write latency or RU costs.

Bounded staleness will increase write latency and RU costs compared to Eventual consistency.

Bounded staleness will decrease write latency and RU costs compared to Eventual consistency.

Bounded staleness is not supported with multiple write regions.

Microsoft Certified:Azure Cosmos DB Developer Specialty

Domain 2Objective 1

Design and Implement a Replication Strategy for Azure Cosmos DB DP-420 Practice Questions (Page 2)

Part of the Design and implement data distribution domain, which makes up ~11% of our current practice bank. Microsoft does not publish an official question count, but from its 100-minute exam (~40–65 total, ~4–7 in this domain), expect 2–4 from this objective — we provide 26 practice questions to prepare you well beyond it. (estimate)

26questions here

6free pages

8concepts

Questions 6–10

6foundation · easy
You are choosing a consistency level for an Azure Cosmos DB account that is globally distributed. Which consistency level generally provides the lowest write latency?
Select an answer first
7foundation · easy
An application requires that all read operations return the most recent write, even if the read is performed in a different region than the write. Which consistency level should you choose for the Azure Cosmos DB account?
Select an answer first
8application · medium
A company runs a Cosmos DB account with a single write region in East US and a read region in West US. The company is planning a maintenance window for East US and wants to temporarily make West US the write region. The company wants to avoid any downtime and ensure that the application continues to work during the maintenance. What should the company do?
Select an answer first
9expert · hard
A company runs a real-time chat application on Azure Cosmos DB with multiple write regions. The application requires low write latency and tolerates occasional stale reads. The team is considering changing from Eventual to Bounded staleness to reduce the maximum staleness. What is the primary trade-off they should consider?
Select an answer first
10foundation · easy
A financial application requires that a user's account balance read from any region is always the most recent committed value. Which consistency model should be used for this Azure Cosmos DB scenario?
Select an answer first

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Design and Implement a Replication Strategy for Azure Cosmos DB DP-420 Practice Questions (Page 2)

Questions 6–10

You are choosing a consistency level for an Azure Cosmos DB account that is globally distributed. Which consistency level generally provides the lowest write latency?

An application requires that all read operations return the most recent write, even if the read is performed in a different region than the write. Which consistency level should you choose for the Azure Cosmos DB account?

A financial application requires that a user's account balance read from any region is always the most recent committed value. Which consistency model should be used for this Azure Cosmos DB scenario?

Keep studying — Design and implement data distribution