QUESTION: 53

A company is running an application on Amazon EC2 instances in an Auto Scaling group. Recently, an issue occurred that prevented EC2 instances from launching successfully, and it took several hours for the Support team to discover the issue. The Support team wants to be noti ed by email whenever an EC2 instance does not start successfully.
Which action will accomplish this?

Add a health check to the Auto Scaling group to invoke an AWS Lambda function whenever an instance status is impaired.
Con gure the Auto Scaling group to send a noti cation to an Amazon SNS topic whenever a failed instance launch occurs.
Create an Amazon CloudWatch alarm that invokes an AWS Lambda function when a failed AttachInstances Auto Scaling API call is made.
Create a status check alarm on Amazon EC2 to send a noti cation to an Amazon SNS topic whenever a status check fail occurs.

Answer(s): B

Reference:

https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-sns-noti cations.html#auto-scaling-sns-noti cations Topic 1

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QUESTION: 54

A company uses AWS Storage Gateway in le gateway mode in front of an Amazon S3 bucket that is used by multiple resources. In the morning when business begins, users do not see the objects processed by a third party the previous evening. When a DevOps engineer looks directly at the S3 bucket, the data is there, but it is missing in Storage Gateway.
Which solution ensures that all the updated third-party les are available in the morning?

Con gure a nightly Amazon EventBridge (Amazon CloudWatch Events) event to trigger an AWS Lambda function to run the RefreshCache command for Storage Gateway.
Instruct the third party to put data into the S3 bucket using AWS Transfer for SFTP.
Modify Storage Gateway to run in volume gateway mode.
Use S3 same-Region replication to replicate any changes made directly in the S3 bucket to Storage Gateway.

Answer(s): A

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QUESTION: 55

A DevOps engineer sets up two Amazon S3 event noti cations for an S3 bucket from the S3 console. Both event noti cations will be invoked when an object PUT action occurs. One event noti cation will invoke an AWS Lambda function if the le su x is .csv. Another event noti cation will invoke an Amazon Simple
Noti cation Service (Amazon SNS) topic if the le su x is .xlsx
The DevOps engineer notices that les with the .csv su x can invoke the Lambda function successfully. However, les with the .xlsx su x cannot invoke the SNS topic.
Which reason explains why the SNS topic is not invoked when .xlsx les are added to the S3 bucket?

Only one event noti cation is allowed from the S3 console.
Amazon S3 needs proper permissions to publish an event noti cation to Amazon SNS.
Lambda has precedence over Amazon SNS in handling the event noti cation.
Amazon SNS is not a valid destination for some S3 event noti cations, including object PUT.

Answer(s): B

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QUESTION: 56

A rapidly growing company wants to scale for Developer demand for AWS development environments. Development environments are created manually in the
AWS Management Console. The Networking team uses AWS CloudFormation to manage the networking infrastructure, exporting stack output values for the
Amazon VPC and all subnets. The development environments have common standards, such as Application Load Balancers, Amazon EC2 Auto Scaling groups, security groups, and Amazon DynamoDB tables.
To keep up with the demand, the DevOps Engineer wants to automate the creation of development environments. Because the infrastructure required to support the application is expected to grow, there must be a way to easily update the deployed infrastructure. CloudFormation will be used to create a template for the development environments.
Which approach will meet these requirements and quickly provide consistent AWS environments for Developers?

Use Fn::ImportValue intrinsic functions in the Resources section of the template to retrieve Virtual Private Cloud (VPC) and subnet values.
Use CloudFormation StackSets for the development environments, using the Count input parameter to indicate the number of environments needed. use the UpdateStackSet command to update existing development environments.
Use nested stacks to de ne common infrastructure components. To access the exported values, use TemplateURL to reference the Networking team's template. To retrieve Virtual Private Cloud (VPC) and subnet values, use Fn::ImportValue intrinsic functions in the Parameters section of the master template. Use the CreateChangeSet and ExecuteChangeSet commands to update existing development environments.
Use nested stacks to de ne common infrastructure components. Use Fn::ImportValue intrinsic functions with the resources of the nested stack to retrieve Virtual Private Cloud (VPC) and subnet values. Use the CreateChangeSet and ExecuteChangeSet commands to update existing development environments.
Use Fn::ImportValue intrinsic functions in the Parameters section of the master template to retrieve Virtual Private Cloud (VPC) and subnet values. De ne the development resources in the order they need to be created in the CloudFormation nested stacks. Use the CreateChangeSet and ExecuteChangeSet commands to update existing development environments.

Answer(s): C

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QUESTION: 53

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QUESTION: 56