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Question 207

A developer has an application container, an AWS Lambda function, and an Amazon Simple Queue Sen/ice (Amazon SOS) queue. The Lambda function uses the SOS queue as an event source. The Lambda function makes a call to a third-party machine learning API when the function is invoked. The response from the third-party API can take up to 60 seconds to return.
the Lambda function's timeout value is currently 65 seconds. The developer has noticed that the Lambda function sometimes processes duplicate messages from the SOS queue.
What should the developer do to ensure that the Lambda function does not process duplicate messages?

A.Configure an increase in the Lambda function's timeout value.
B.Configure the Lambda function with a larger amount of memory.
C.Configure the SOS queue's visibility timeout value to be greater than the maximum time it takes to call the third-party API.
D.Configure the SOS queue's delivery delay value to be greater than the maximum time it takes to call the third-party API.

Question 208

A company is using AWS Elastic Beanstalk to deploy a three-tier application. The application uses an Amazon RDS DB instance as the database tier. The com wants to decouple the DB instance from the Elastic Beanstalk environment.
Which combination of steps should a developer take to meet this requirement? (Select TWO.)

A.Create a new Elastic Beanstalk environment that connects to the DB instance.
B.Use the Elastic Beanstalk CLI to decouple the DB instance.
C.Use the AWS CLI to decouple the DB instance.
D.Modify the current Elastic Beanstalk environment to connect to the DB instance.
E.Create a new DB instance from a snapshot of the previous DB instance.

Question 209

A developer is working on an ecommerce website. The developer wants to review server logs without logging in to each of the application servers individually. The website runs on multiple Amazon EC2 instances, is written in Python, and needs to be highly available.
How can the developer update the application to meet these requirements with MINIMUM changes?

A.Set up centralized logging by using Amazon Elasticsearch Service (Amazon ES), Logstash, and Kibana
B.Install the unified Amazon CloudWatch agent on the EC2 instances. Configure the agent to push the application logs to CloudWatch.
C.Scale down the application to one larger EC2 instance where only one instance is recording logs.
D.Rewrite the application to be cloud native and to run on AWS Lambda where the logs can be reviewed in Amazon CloudWatch.

Question 210

A Developer created configuration specifications for an AWS Elastic Beanstalk application in a file named healthcheckurl.yaml in the .ebextensions/directory of their application source bundle. The file contains the following:

After the application launches, the health check is not being run on the correct path, event though it is valid.
What can be done to correct this configuration file?

A.Rename the file to a .config extension.
B.Convert the file to JSON format.
C.Change the configuration section from options_settings to resources.
D.Change the namespace of the option settings to a cusom namespace.

Question 211

A company maintains an application responsible for processing several thousand external callbacks each day.
The company's System administrators want to know how many callbacks are being received on a rolling basis, and they want this data available for 10 days. The company also wants the ability to issue automated alerts if the number of callbacks exceeds the defined thresholds.
What is the MOST cost-effective way to address the need to track and alert on these statistics?

A.Push callback data to AWS X-Ray and use AWS Lambda to query, display, and alert on exceeded thresholds.
B.Push callback data to an Amazon RDS database that can be queried to show historical data and to alert on exceeded thresholds.
C.Push callback data to Amazon CloudWatch as a custom metric and use the CloudWatch alerting mechanisms to alert System Administrators.
D.Push callback data to Amazon Kinesis Data Streams and invoke an AWS Lambda function that stores data in Amazon DynamoDB and sends the required alerts.