A gaming website gives users the ability to trade game items with each other on the platform. The platform requires both users' records to be updated and persisted in one transaction. If any update fails, the transaction must roll back.
Which AWS solution can provide the transactional capability that is required for this feature?
A.
Amazon DynamoDB with operations made with the Consistent Read parameter set to true
B.
Amazon ElastiCache for Memcached with operations made within a transaction block
C.
Amazon DynamoDB with reads and writes made by using Transact* operations
D.
Amazon Aurora MySQL with operations made within a transaction block
E.
Amazon Athena with operations made within a transaction block
A company hosts a three-tier web application on AWS behind an Amazon CloudFront distribution. A developer wants a dashboard to monitor error rates and anomalies of the CloudFront distribution with the shortest possible refresh interval.
Which combination of slops should the developer take to meet these requirements? (Choose two.)
A.
Activate real-time logs on the CloudFront distribution. Create a stream in Amazon Kinesis Data Streams.
B.
Export the CloudFront logs to an Amazon S3 bucket. Detect anomalies and error rates with Amazon QuickSight.
C.
Configure Amazon Kinesis Data Streams to deliver logs to Amazon OpenSearch Service (Amazon Elasticsearch Service). Create a dashboard in OpenSearch Dashboards (Kibana).
D.
Create Amazon CloudWatch alarms based on expected values of selected CloudWatch metrics to detect anomalies and errors.
E.
Design an Amazon CloudWatch dashboard of the selected CloudFront distribution metrics.
A company has an online order website that uses Amazon DynamoDB to store item inventory. A sample of the inventory object is as follows:
A developer needs to reduce all inventory prices by 100 as long as the resulting price would not be less than 500.
What should the developer do to make this change with the LEAST number of calls to DynamoDB?
A.
Perform a DynamoDB Query operation with the Id. If the price is >= 600, perform an UpdateItem operation to update the price.
B.
Perform a DynamoDB UpdateItem operation with a condition expression of "Price >= 600".
C.
Perform a DynamoDB UpdateItem operation with a condition expression of "ProductCategory IN ({"S": "Sporting Goods"}) and Price 600".
D.
Perform a DynamoDB UpdateItem operation with a condition expression of "MIN Price = 500".
A company is using an AWS Lambda function to process records from an Amazon Kinesis data stream. The company recently observed slow processing of the records. A developer notices that the iterator age metric for the function is increasing and that the Lambda run duration is constantly above normal.
Which actions should the developer take to increase the processing speed? (Choose two.)
A.
Increase the number of shards of the Kinesis data stream.
B.
Decrease the timeout of the Lambda function.
C.
Increase the memory that is allocated to the Lambda function.
D.
Decrease the number of shards of the Kinesis data stream.
E.
Increase the timeout of the Lambda function.
A developer is making changes to a custom application that uses AWS Elastic Beanstalk.
Which solutions will update the Elastic Beanstalk environment with the new application version after the developer completes the changes? (Choose two.)
A.
Package the application code into a .zip file. Use the AWS Management Console to upload the zip file and deploy the packaged application.
B.
Package the application code into a .tar file. Use the AWS Management Console to create a new application version from the .tar file. Update the environment by using the AWS CLI.
C.
Package the application code into a .tar file. Use the AWS Management Console to upload the .tar file and deploy the packaged application.
D.
Package the application code into a .zip file. Use the AWS CLI to create a new application version from the .zip file and to update the environment.
E.
Package the application code into a .zip file. Use the AWS Management Console to create a new application version from the .zip file. Rebuild the environment by using the AWS CLI.