A machine learning (ML) specialist is training a linear regression model.The specialist notices that the model is overfitting.The specialist applies an L1 regularization parameter and runs the model again.This change results in all features having zero weights.What should the ML specialist do to improve the model results?Read More →
An organization has hired an external firm to audit unauthorized changes on the company’s AWS environment, the external auditor needs appropriate access.How can this be accomplished?Read More →
What is the MOST secure way to store passwords on AWS?Read More →
A developer is creating a new application for a pet store.The application will manage customer rewards points.The developer will use Amazon DynamoDB to store the data for the application.The developer needs to optimize query performance and limit partition overload before actual performance analysis.Which option should the developer use for a partition key to meet these requirements?Read More →
A Security Engineer has been asked to create an automated process to disable IAM user access keys that are more than three months old.Which of the following options should the Security Engineer use?Read More →
A solutions architect needs to define a reference architecture for a solution for three-tier applications with web, application, and NoSQL data layers.The reference architecture must meet the following requirements:✑ High availability within an AWS Region✑ Able to fail over in 1 minute to another AWS Region for disaster recovery✑ Provide the most efficient solution while minimizing the impact on the user experienceWhich combination of steps will meet these requirements? (Choose three.)Read More →
A SysOps administrator is trying to set up an Amazon Route 53 domain name to route traffic to a website hosted on Amazon S3.The domain name of the website is www.example.com and the S3 bucket name DOC-EXAMPLE-BUCKET.After the record set is set up in Route 53, the domain name www.anycompany.com does not seem to work, and the static website is not displayed in the browser.Which of the following is a cause of this?Read More →
A mobile application running on eight Amazon EC2 instances is relying on a third-party API endpoint.The third-party service has a high failure rate because of limited capacity which is expected to be resolved in a few weeks.In the meantime, the mobile application developers have added a retry mechanism and are logging failed API requests.A DevOps engineer must automate the monitoring of application logs and count the specific error messages, if there are more than 10 errors within a 1-minute window the system must issue an alert.How can the requirements be met with MINIMAL management overhead?Read More →
A company is running its line of business application on AWS, which uses Amazon RDS for MySQL at the persistent data store.The company wants to minimize downtime when it migrates the database to Amazon Aurora.Which migration method should a Database Specialist use?Read More →
An online gaming company is designing a game that is expected to be popular all over the world.A solutions architect needs to define an AWS Cloud architecture that supports near-real-time recording and displaying of current game statistics for each player, along with the names of the top 25 players in the world, at any given time.Which AWS database solution and configuration should the solutions architect use to meet these requirements?Read More →
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