Which step should a machine learning specialist take to remove features that are irrelevant for the analysis and reduce the model’s complexity?

2026-04-04
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In: MLS-C01
With: 2 Comments

A company wants to predict the sale prices of houses based on available historical sales data.The target variable in the company’s dataset is the sale price.The features include parameters such as the lot size, living area measurements, non-living area measurements, number of bedrooms, number of bathrooms, year built, and postal code.The company wants to use multi-variable linear regression to predict house sale prices.Which step should a machine learning specialist take to remove features that are irrelevant for the analysis and reduce the model’s complexity?Read More →

What should a solutions architect recommend as a solution?

2026-04-04
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In: SAA-C02
With: 2 Comments

A company has recently updated its internal security standards.The company must now ensure all Amazon S3 buckets and Amazon Elastic Block Store (AmazonEBS) volumes are encrypted with keys created and periodically rotated by internal security specialists.The company is looking for a native, software-based AWS service to accomplish this goal.What should a solutions architect recommend as a solution?Read More →

Which approach meets these requirements with MINIMAL effort?

2026-04-04
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In: DBS-C01
With: 2 Comments

A vehicle insurance company needs to choose a highly available database to track vehicle owners and their insurance details.The persisted data should be immutable in the database, including the complete and sequenced history of changes over time with all the owners and insurance transfer details for a vehicle.The data should be easily verifiable for the data lineage of an insurance claim.Which approach meets these requirements with MINIMAL effort?Read More →

What change should be made to avoid causing disruptions in device operations?

2026-04-04
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In: SAP-C01
With: 2 Comments

While debugging a backend application for an IoT system that supports globally distributed devices, a Solutions Architect notices that stale data is occasionally being sent to user devices.Devices often share data, and stale data does not cause issues in most cases.However, device operations are disrupted when a device reads the stale data after an update.The global system has multiple identical application stacks deployed in different AWS Regions.If a user device travels out of its home geographic region, it will always connect to the geographically closest AWS Region to write or read data.The same data is available in all supported AWS Regions using an AmazonDynamoDB global table.What change should be made to avoid causing disruptions in device operations?Read More →

Which of the following is the MOST efficient way to meet these requirements?

2026-04-04
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In: SCS-C01
With: 2 Comments

The Security Engineer is given the following requirements for an application that is running on Amazon EC2 and managed by using AWS CloudFormation templates with EC2 Auto Scaling groups:-Have the EC2 instances bootstrapped to connect to a backend database.-Ensure that the database credentials are handled securely.-Ensure that retrievals of database credentials are logged.Which of the following is the MOST efficient way to meet these requirements?Read More →

Which solution will enable the search and retrieval of each employee’s individual details and high-resolution photos using AWS APIs?

2026-04-04
By:
In: DVA-C01
With: 2 Comments

A company is migrating legacy internal applications to AWS. Leadership wants to rewrite the internal employee directory to use native AWS services A developer needs to create a solution for storing employee contact details and high-resolution photos for use with the new application.Which solution will enable the search and retrieval of each employee’s individual details and high-resolution photos using AWS APIs?Read More →