Which solution will meet these requirements with the LEAST operational overhead?

2026-03-26
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In: MLS-C01
With: 2 Comments

A real-estate company is launching a new product that predicts the prices of new houses.The historical data for the properties and prices is stored in .csv format in an Amazon S3 bucket.The data has a header, some categorical fields, and some missing values.The company’s data scientists have used Python with a common open-source library to fill the missing values with zeros.The data scientists have dropped all of the categorical fields and have trained a model by using the open-source linear regression algorithm with the default parameters.The accuracy of the predictions with the current model is below 50%.The company wants to improve the model performance and launch the new product as soon as possible.Which solution will meet these requirements with the LEAST operational overhead?Read More →

Which database solution meets these requirements at the LOWEST cost?

2026-03-25
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In: DBS-C01
With: 2 Comments

A company wants to build a new invoicing service for its cloud-native application on AWS.The company has a small development team and wants to focus on service feature development and minimize operations and maintenance as much as possible.The company expects the service to handle billions of requests and millions of new records every day.The service feature requirements, including data access patterns are well-defined.The service has an availability target of99.99% with a milliseconds latency requirement.The database for the service will be the system of record for invoicing data.Which database solution meets these requirements at the LOWEST cost?Read More →

Which solution will meet these requirements?

2026-03-25
By:
In: DOP-C02
With: 2 Comments

A company uses an organization in AWS Organizations to manage its AWS accounts.The company’s DevOps team has developed an AWS Lambda function that calls the Organizations API to create new AWS accounts.The Lambda function runs in the organization’s management account.The DevOps team needs to move the Lambda function from the management account to a dedicated AWS account.The DevOps team must ensure that the Lambda function has the ability to create new AWS accounts only in Organizations before the team deploys the Lambda function to the new account.Which solution will meet these requirements?Read More →

Which combination of actions will meet these requirements?

2026-03-25
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In: SOA-C02
With: 2 Comments

A company hosts a web application on Amazon EC2 instances behind an Application Load Balancer (ALB).The company uses Amazon Route 53 to route traffic.The company also has a static website that is configured in an Amazon S3 bucket.A SysOps administrator must use the static website as a backup to the web application.The failover to the static website must be fully automated.Which combination of actions will meet these requirements? (Choose two.)Read More →

Which of the design patterns below should they use?

2026-03-25
By:
In: SAP-C01
With: 2 Comments

A company is building a voting system for a popular TV show, viewers win watch the performances then visit the show’s website to vote for their favorite performer.It is expected that in a short period of time after the show has finished the site will receive millions of visitors.The visitors will first login to the site using their Amazon.com credentials and then submit their vote.After the voting is completed the page will display the vote totals.The company needs to build the site such that can handle the rapid influx of traffic while maintaining good performance but also wants to keep costs to a minimum.Which of the design patterns below should they use?Read More →