Microsoft Azure

Azure Cosmos DB Developer Specialty

DP-420

Specialize in Azure Cosmos DB with the DP-420 exam designed for developers.

147 questions 0 views Free
Start Mock Test Timed · Full-length · Scored

Questions 81–90 of 147

Q81

What happens when you configure a Cosmos DB container with a unique key policy?

  • A Enforces uniqueness of specified fields
  • B Increases read throughput automatically
  • C Reduces storage costs by 50%
  • D Disables multi-region writes
Explanation A unique key policy enforces the uniqueness of the specified fields in documents within the container.
Q82

Which service in Azure Cosmos DB enables automatic scaling of throughput?

  • A Autoscale provisioned throughput
  • B Manual throughput settings
  • C Fixed resource model
  • D Azure Functions provisioning
Explanation Autoscale provisioned throughput adjusts automatically based on load, while others do not provide dynamic scaling.
Q83

You are configuring a multi-region Cosmos DB account. What is the key benefit of enabling region writes?

  • A Reduced latency for users
  • B Decrease in global consistency
  • C Increased instance costs
  • D Loss of read capacity
Explanation Enabling region writes minimizes latency for users by allowing them to write closest to their geographical location.
Q84

A company needs real-time analytics on their transactions stored in Cosmos DB. What feature should they use?

  • A Change feed
  • B Stored procedures
  • C Triggers
  • D Manual querying
Explanation The change feed allows real-time processing of transactions, while others do not provide the same real-time capabilities.
Q85

Which consistency level provides the strongest guarantee in Cosmos DB?

  • A Strong
  • B Bounded Staleness
  • C Eventual
  • D Session
Explanation Strong consistency guarantees reads reflect all writes immediately; others do not.
Q86

A company needs to optimize their Cosmos DB performance for queries that involve a range of documents. What should they implement?

  • A Partitioning Strategy
  • B Change Feed
  • C Stored Procedures
  • D Throughput Scaling
Explanation Partitioning Strategy ensures efficient access to relevant documents during range queries; others don't enhance query performance directly.
Q87

You are configuring a Cosmos DB for a multi-region write scenario. What must you consider for latency?

  • A Use Strong Consistency
  • B Use Multi-Region Writes
  • C Avoid Partitioning
  • D Use Serverless Mode
Explanation Multi-Region Writes enable reduced latency across regions; others either increase latency or are irrelevant for the scenario.
Q88

Which service in Azure Cosmos DB provides multi-region writes?

  • A Multi-Region Write
  • B Shared Throughput
  • C Single Region Mode
  • D Global Database
Explanation Multi-Region Write allows writes in any region, unlike other options.
Q89

A company needs to handle massive traffic with low latency and global distribution. What should they choose?

  • A Azure SQL Database
  • B Azure Blob Storage
  • C Azure Cosmos DB
  • D Azure Table Storage
Explanation Azure Cosmos DB is designed for high throughput and global distribution.
Q90

What happens when you exceed the provisioned throughput in Azure Cosmos DB?

  • A Requests are aborted
  • B Requests are queued
  • C You are billed for the overflow
  • D Throttling occurs
Explanation Throttling occurs when the requests exceed provisioned throughput limits.