DVA-C01 試験問題を無料オンラインアクセス

A developer has written an application that writes data to Amazon DynamoDB- The DynamoDB table has been configured to use conditional writes During peak usage times, writes are failing due to a CondittonatCheckFailedException error How can the developer increase the application's reliability when multiple clients are attempting to write to the same record?

• A.Increase the amount of write capacity for the table to anticipate short-term spikes or bursts m write operations
• B.Implement error retries and exponential backoff with jitter.
• C.Write the data to an Amazon SNS topic.
• D.Implement a caching solution, such as DynamoDB Accelerator or Amazon ElastiCache.

A Developer is going to deploy an AWS Lambda function that requires significant CPU utilization. Which approach will MINIMIZE the average runtime of the function?

• A.Deploy the function into multiple Availability Zones
• B.Deploy the function with its memory allocation set to the maximum amount
• C.Deploy the function into multiple AWS Regions
• D.Deploy the function using Lambda layers

What are the MINIMUM properties required in the resources section of the AppSpace file for CodeDeploy to deploy the ECS service successfully?

• A.name, alias, currentversion, and targetversion
• B.TaskDefinitionContainerName, ContainerPort
• C.TaskDefinition, ContainerName, and PlartformVersion
• D.name, Currentversion, NetworkConfiguration, and Platform Version

A developer is building a new application that uses an Amazon DynamoDB table. The specification states that all items that are older than 48 hours must be removed Which solution will meet this requirement?

• A.Create a new attribute that has the Number data type Enable TTL on the DynamoDB table for this attribute in the application code set the value of this attribute to the current timestamp plus 48 hours for each new item that is being inserted
• B.Create a new attribute that has the String data type Enable TTL on the DynamoDB table for this attribute In the application code set the value of this attribute to the current timestamp plus 48 hours for each new item that is being inserted
• C.Create a new attribute that has the String data type Add a local secondary index (LSI) for this attribute and enable TTL with an expiration of 48 hours In the application code, set the value of this attribute to the current timestamp for each new item that is being inserted.
• D.Create a new attribute that has the Number data type Add a local secondary index (LSI) for this attribute and enable TTL with an expiration of 48 hours In the application code, set the value of this attribute to the current timestamp for each new item that is being inserted.

A developer is changing the configuration for a CPU-intensive AWS Lambda function that runs once an hour. The function usually takes 45 seconds to run, but sometimes the run time is up to 1 minute. The timeout parameter is set to 3 minutes, and all other parameters are set to default.
The developer needs to optimize the run time of this function.
Which solution will meet this requirement?

• A.Redeploy the function by using Lambda layers
• B.Increase the function's reserved concurrency
• C.Increase the function's memory.
• D.Redeploy the function within the default VPC