Design and Implement a Replication Strategy for Azure Cosmos DB DP-420 Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   An application uses Azure Cosmos DB and is deployed in two regions. The team plans to add a third region to improve read latency for users in a new geographic area. When should the team add the new region to the Cosmos DB account to minimize the time before users in that area can read data?

   • AOnly after the new region is added to the Azure DNS records
   • BOnly when the first user request fails in the new area
   • CAfter the application is updated to reference the new region
   • DAs soon as the decision is made, before the application is updated to use the new region
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2. 12foundation · easy

   You have an Azure Cosmos DB account with multiple regions and automatic failover enabled. Which setting determines the order in which regions are promoted to write region during an automatic failover?

   • AThe consistency level of each region
   • BThe region's distance from the primary region
   • CThe failover priority list configured for the account
   • DThe order in which regions were added to the account
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4. 13expert · hard

   A financial trading platform uses Azure Cosmos DB for real-time market data. The application requires that all reads return the most recent committed write, but the team is concerned about the RU cost of Strong consistency. They are considering Bounded staleness with a 5-second lag. Which statement is true regarding this choice?

   • ABounded staleness is not supported with multiple read regions.
   • BBounded staleness provides the same guarantee as Strong consistency but at lower RU cost.
   • CBounded staleness would not meet the requirement because it allows reads to return stale data within the configured lag.
   • DBounded staleness would increase read latency compared to Strong consistency.
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5. 14foundation · easy

   You are designing an Azure Cosmos DB solution for an application that can tolerate some data staleness but requires that reads never see writes out of order. Which consistency level should you choose?

   • AConsistent prefix
   • BEventual
   • CBounded staleness
   • DStrong
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6. 15application · medium

   A media streaming company uses Azure Cosmos DB to store user preferences. The application is deployed in two regions and uses the default consistency level. The team notices that read latency is higher than expected for users in the secondary region. They want to reduce read latency without changing the consistency level. What should they do?

   • AAdd more read regions to the account.
   • BEnable the SDK's preferred region list so that reads are routed to the closest region.
   • CIncrease the provisioned throughput on the secondary region.
   • DChange the consistency level to Eventual to reduce read latency.
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