Implement Client Connectivity Options in the Azure Cosmos DB SDK DP-420 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   In Azure Cosmos DB SDK, what is the primary difference between gateway and direct connectivity modes?

   • AGateway mode is only available in the .NET SDK, while direct mode is only available in the Java SDK.
   • BGateway mode routes all requests through a regional gateway endpoint, while direct mode uses the database account's public endpoint for all operations.
   • CGateway mode uses HTTPS to a gateway service that forwards requests to replicas, while direct mode uses direct TCP connections to replicas, bypassing the gateway.
   • DGateway mode is used for write operations only, while direct mode is used for read operations only.
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2. 7foundation · easy

   Which interface in the Azure Cosmos DB .NET SDK allows you to capture diagnostics for logging and troubleshooting?

   • ACosmosException
   • BCosmosDiagnostics
   • CCosmosResponseMessage
   • DCosmosClientOptions
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4. 8foundation · easy

   Which exception type in the Azure Cosmos DB .NET SDK is commonly thrown for transient failures that can be retried?

   • ACosmosException with StatusCode 401 (Unauthorized)
   • BCosmosException with StatusCode 429 (Too Many Requests)
   • CCosmosException with StatusCode 404 (Not Found)
   • DCosmosException with StatusCode 400 (Bad Request)
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5. 9application · medium

   A .NET application performs bulk inserts into a Cosmos DB container. The team wants to maximize throughput by using the SDK's bulk support. They are using a singleton client. What should they configure?

   • AEnable the 'AllowBulkExecution' option on the CosmosClient.
   • BIncrease the 'MaxRetryAttemptsOnThrottledRequests' setting.
   • CSet 'ConnectionMode' to 'Gateway'.
   • DCreate a new client for each bulk operation.
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6. 10application · medium

   A team is building a batch processing job that reads from Azure Cosmos DB and writes results to a data lake. The job runs on Azure Batch and uses the .NET SDK. They want to handle transient connection errors gracefully and log the retry attempts for auditing. The job currently uses a singleton client. What should they implement?

   • AUse a custom RetryHandler that retries on 429 and 503 with exponential backoff and logs each attempt.
   • BCreate a new CosmosClient for each retry attempt to ensure a fresh connection.
   • CCatch the CosmosException and retry immediately without logging.
   • DUse the default retry policy and enable SDK logging at the Information level.
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