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NEW QUESTION 51

You have a development team that is continuously spending a lot of time rolling back updates for an

application. They work on changes, and if the change fails, they spend more than 5-6h in rolling back the

update. Which of the below options can help reduce the time for rolling back application versions.

  • A. Use Elastic Beanstalk and re-deploy using Application Versions
  • B. Use OpsWorks and re-deploy using rollback feature.
  • C. Use S3 to store each version and then re-deploy with Elastic Beanstalk
  • D. Use CloudFormation and update the stack with the previous template

Answer: A

Explanation:

Explanation

Option B is invalid because Clastic Beanstalk already has the facility to manage various versions and you don't

need to use S3 separately for this.

Option C is invalid because in Cloudformation you will need to maintain the versions. Clastic Beanstalk can

so that automatically for you.

Option D is good for production scenarios and Clastic Beanstalk is great for development scenarios.

AWS beanstalk is the perfect solution for developers to maintain application versions.

With AWS Clastic Beanstalk, you can quickly deploy and manage applications in the AWS Cloud without

worrying about the infrastructure that runs those

applications. AWS Clastic Beanstalk reduces management complexity without restricting choice or control.

You simply upload your application, and AWS Clastic

Beanstalk automatically handles the details of capacity provisioning, load balancing, scaling, and application

health monitoring.

For more information on AWS Beanstalk please refer to the below link:

* https://aws.amazon.com/documentation/elastic-beanstalk/

NEW QUESTION 52

After conducting a disaster recovery exercise, an Enterprise Architect discovers that a large team of Database and Storage Administrators need more than seven hours of manual effort to make a flagship application's database functional in a different AWS Region. The Architect also discovers that the recovered database is often missing as much as two hours of data transactions.

Which solution provides improved RTO and RPO in a cross-region failover scenario?

  • A. Use Amazon SNS topics to receive published messages from Amazon RDS availability and backup events.

    Use AWS Lambda for three separate functions with calls to Amazon RDS to snapshot a database instance, create a cross-region snapshot copy, and restore an instance from a snapshot. Use a scheduled Amazon CloudWatch Events rule at a frequency matching the RPO to trigger the Lambda function to snapshot a database instance. Trigger the Lambda function to create a cross-region snapshot copy when the SNS topic for backup events receives a new message. Configure the Lambda function to restore an instance from a snapshot to trigger sending new messages published to the availability SNS topic.
  • B. Deploy an Amazon RDS Multi-AZ instance backed by a multi-region Amazon EFS. Configure the RDS option group to enable multi-region availability for native automation of cross-region recovery and continuous data replication. Create an Amazon SNS topic subscribed to RDS-impacted events to send emails to the Database Administration team when significant query Latency is detected in a single Availability Zone.
  • C. Use Amazon RDS scheduled instance lifecycle events to create a snapshot and specify a frequency to match the RPO. Use Amazon RDS scheduled instance lifecycle event configuration to perform a cross- region snapshot copy into the failover region upon SnapshotCreateComplete events. Configure Amazon CloudWatch to alert when the CloudWatch RDS namespace CPUUtilization metric for the database instance falls to 0% and make a call to Amazon RDS to restore the database snapshot in the failover region.
  • D. Create a scheduled Amazon CloudWatch Events rule to make a call to Amazon RDS to create a snapshot from a database instance and specify a frequency to match the RPO. Create an AWS Step Functions task to call Amazon RDS to perform a cross-region snapshot copy into the failover region, and configure the state machine to execute the task when the RDS snapshot create state is complete. Create an SNS topic subscribed to RDS availability events, and push these messages to an Amazon SQS queue located in the failover region. Configure an Auto Scaling group of worker nodes to poll the queue for new messages and make a call to Amazon RDS to restore a database from a snapshot after a checksum on the cross-region copied snapshot returns valid.

Answer: A

NEW QUESTION 53

You need to deploy a multi-container Docker environment on to Elastic beanstalk. Which of the following

files can be used to deploy a set of Docker containers to Elastic beanstalk

  • A. Dockerrun.aws.json
  • B. DockerMultifile
  • C. Dockerfile
  • D. Dockerrun

Answer: A

Explanation:

Explanation

The AWS Documentation specifies

A Dockerrun.aws.json file is an Clastic Beanstalk-specific JSON file that describes how to deploy a set of

Docker containers as an Clastic Beanstalk application. You

can use aDockerrun.aws.json file for a multicontainer Docker environment.

Dockerrun.aws.json describes the containers to deploy to each container instance in the environment as well as

the data volumes to create on the host instance for

the containers to mount.

For more information on this, please visit the below URL:

* http://docs.aws.a

mazon.com/elasticbeanstalk/latest/dg/create_deploy_docker_v2config. html

NEW QUESTION 54

You need to grant a vendor access to your AWS account. They need to be able to read protected messages in a private S3 bucket at their leisure. They also use AWS.

What is the best way to accomplish this?

  • A. Create an IAM User with API Access Keys. Grant the User permissions to access the bucket. Give the vendor the AWS Access Key ID and AWS Secret Access Key for the User.
  • B. Create a cross-account IAM Role with permission to access the bucket, and grant permission to use the Role to the vendor AWS account.
  • C. Generate a signed S3 PUT URL and a signed S3 PUT URL, both with wildcard values and 2 year durations. Pass the URLs to the vendor.
  • D. Create an EC2 Instance Profile on your account. Grant the associated IAM role full access to the bucket.

    Start an EC2 instance with this Profile and give SSH access to the instance to the vendor.

Answer: B

Explanation:

When third parties require access to your organization's AWS resources, you can use roles to delegate access to them. For example, a third party might provide a service for managing your AWS resources. With IAM roles, you can grant these third parties access to your AWS resources without sharing your AWS security credentials.

Instead, the third party can access your AWS resources by assuming a role that you create in your AWS account.

Reference:

http://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_common-scenarios_third-party.html

NEW QUESTION 55

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