Which preprocessing step will meet these requirements?

2025-10-02
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In: MLS-C01
With: 1 Comment

A data scientist obtains a tabular dataset that contains 150 correlated features with different ranges to build a regression model.The data scientist needs to achieve more efficient model training by implementing a solution that minimizes impact on the model’s performance.The data scientist decides to perform a principal component analysis (PCA) preprocessing step to reduce the number of features to a smaller set of independent features before the data scientist uses the new features in the regression model.Which preprocessing step will meet these requirements?Read More →

Which combination of steps should the security engineer take to meet these requirements?

2025-10-02
By:
In: SCS-C01
With: 1 Comment

A company has a requirement that none of its Amazon RDS resources can be publicly accessible.A security engineer needs to set up monitoring for this requirement and must receive a near-real-time notification if any RDS resource is noncompliant.Which combination of steps should the security engineer take to meet these requirements? (Choose three.)Read More →

Which actions should a solutions architect take to increase the reliability of the application?

2025-10-02
By:
In: SAP-C01
With: 1 Comment

A company runs an application in the cloud that consists of a database and a website.Users can post data to the website, have the data processed, and have the data sent back to them in an email.Data is stored in a MySQL database running on an Amazon EC2 instance.The database is running in a VPC with two private subnets.The website is running on Apache Tomcat in a single EC2 instance in a different VPC with one public subnet.There is a single VPC peering connection between the database and website VPC.The website has suffered several outages during the last month due to high traffic.Which actions should a solutions architect take to increase the reliability of the application? (Choose three.)Read More →

Which combination of steps will meet the company’s requirements?

2025-10-02
By:
In: DOP-C01
With: 1 Comment

A company runs an application on Amazon EC2 instances.The company uses a series of AWS CloudFormation stacks to define the application resources.A developer performs updates by building and testing the application on a laptop and then uploading the build output and CloudFormation stack templates to Amazon S3.The developer’s peers review the changes before the developer performs the CloudFormation stack update and installs a new version of the application onto the EC2 instances.The deployment process is prone to errors and is time-consuming when the developer updates each EC2 instance with the new application.The company wants to automate as much of the application deployment process as possible while retaining a final manual approval step before the modification of the application or resources.The company already has moved the source code for the application and the CloudFormation templates to AWS CodeCommit.The company also has created an AWS CodeBuild project to build and test the application.Which combination of steps will meet the company’s requirements? (Choose two.)Read More →

Which solution will meet these requirements with the MOST operational efficiency?

2025-10-02
By:
In: DBS-C01
With: 1 Comment

A company recently created a snapshot of an Amazon RDS for PostgreSQL DB instance that hosts a production database.The company created a new DB instance from the snapshot to test a new application feature while providing isolation from the production database.During testing of the new application feature, the company noticed that read latency on the new database was higher than normal.A database specialist needs to resolve the latency issue.Which solution will meet these requirements with the MOST operational efficiency?Read More →

Which solution meets these requirements?

2025-10-02
By:
In: SAA-C02
With: 1 Comment

A company runs a public three-tier web application in a VPC.The application runs on Amazon EC2 instances across multiple Availability Zones.The EC2 instances that run in private subnets need to communicate with a license server over the internet.The company needs a managed solution that minimizes operational maintenance.Which solution meets these requirements?Read More →