A company needs to store infrequently used data for data archives and long-term backups.Which AWS service or storage class will meet these requirements MOST cost-effectively?Read More →
A SysOps Administrator must use a bastion host to administer a fleet of Amazon EC2 instances.All access to the bastion host is managed by the Security team.What is the MOST secure way for the Security team to provide the SysOps Administrator access to the bastion host?Read More →
A Data Scientist is developing a machine learning model to predict future patient outcomes based on information collected about each patient and their treatment plans.The model should output a continuous value as its prediction.The data available includes labeled outcomes for a set of 4,000 patients.The study was conducted on a group of individuals over the age of 65 who have a particular disease that is known to worsen with age.Initial models have performed poorly.While reviewing the underlying data, the Data Scientist notices that, out of 4,000 patient observations, there are 450 where the patient age has been input as 0.The other features for these observations appear normal compared to the rest of the sample populationHow should the Data Scientist correct this issue?Read More →
An online photo-sharing company stores its photos in an Amazon S3 bucket that exists in the us-west-1 Region.The company needs to store a copy of all existing and new photos in another geographical location.Which solution will meet this requirement with the LEAST operational effort?Read More →
A database specialist needs to reduce the cost of an application’s database.The database is running on a Multi-AZ deployment of an Amazon RDS for Microsoft SQL Server DB instance.The application requires the database to support stored procedures, SQL Server Wire Protocol (TDS), and T-SQL.The database must also be highly available.The database specialist is using AWS Database Migration Service (AWS DMS) to migrate the database to a new data store.Which solution will reduce the cost of the database with the LEAST effort?Read More →
A company has an Amazon S3 bucket that contains sensitive data.The data must be encrypted in transit and at rest.The company encrypts the data in the S3 bucket by using an AWS Key Management Service (AWS KMS) key.A developer needs to grant several other AWS accounts the permission to use the S3 GetObject operation to retrieve the data from the S3 bucket.How can the developer enforce that all requests to retrieve the data provide encryption in transit?Read More →
A company uses AWS Storage Gateway in file 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 files are available in the morning?Read More →
A DevOps engineer needs to configure a blue/green deployment for an existing three-tier application.The application runs on Amazon EC2 instances and uses an Amazon RDS database.The EC2 instances run behind an Application Load Balancer (ALB) and are in an Auto Scaling group.The DevOps engineer has created a launch template and an Auto Scaling group for the blue environment.The DevOps engineer also has created a launch template and an Auto Scaling group for the green environment.Each Auto Scaling group deploys to a matching blue or green target group.The target group also specifies which software, blue or green, gets loaded on the EC2 instances.The ALB can be configured to send traffic to the blue environment’s target group or the green environment’s target group.An Amazon Route 53 record for www.example.com points to the ALB.The deployment must move traffic all at once between the software on the blue environment’s EC2 instances to the newly deployed software on the green environment’s EC2 instances.What should the DevOps engineer do to meet these requirements?Read More →
A company has created an AWS CloudFormation template that consists of the AWS::EC2::Instance resource and a custom CloudFormation resource.The custom CloudFormation resource is an AWS Lambda function that attempts to run automation on the Amazon EC2 instance.During testing, the Lambda function fails because the Lambda function tries to run before the EC2 instance is launched.Which solution will resolve this issue?Read More →
A solutions architect works for a government agency that has strict disaster recovery requirements.All Amazon Elastic Block Store (Amazon EBS) snapshots are required to be saved in at least two additional AWS Regions.The agency also is required to maintain the lowest possible operational overhead.Which solution meets these requirements?Read More →
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