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

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

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 →

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

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

A developer is creating an application that will give users the ability to store photos from their cellphones in the cloud.The application needs to support tens of thousands of users.The application uses an Amazon API Gateway REST API that is integrated with AWS Lambda functions to process the photos.The application stores details about the photos in Amazon DynamoDB.Users need to create an account to access the application.In the application, users must be able to upload photos and retrieve previously uploaded photos.The photos will range in size from 300 KB to 5 MB.Which solution will meet these requirements with the LEAST operational overhead?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 developer has created an AWS Lambda function in a company’s development account.The Lambda function requires the use of an AWS Key Management Service (AWS KMS) customer managed key that exists in a security account that the company’s security team controls.The developer obtains the ARN of the KMS key from a previous Lambda function in the development account.The previous Lambda function had been working properly with the KMS key.When the developer uses the ARN and tests the new Lambda function, an error message states that access is denied to the KMS key in the security account.The developer tests the previous Lambda function that uses the same KMS key and discovers that the previous Lambda function still can encrypt data as expected.A security engineer must resolve the problem so that the new Lambda function in the development account can use the KMS key from the security account.Which combination of steps should the security engineer take to meet these requirements? (Choose two.)Read More →

Which combination of steps will ensure optimal performance as the data grows?

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

A company wants to analyze log data using date ranges with a custom application running on AWS.The application generates about 10 GB of data every day, which is expected to grow.A Solutions Architect is tasked with storing the data in Amazon S3 and using Amazon Athena to analyze the data.Which combination of steps will ensure optimal performance as the data grows? (Choose two.)Read More →

Which solution should a SysOps administrator choose to meet these requirements?

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

A SysOps administrator is designing a solution for an Amazon RDS for PostgreSQL DB instance.Database credentials must be stored and rotated monthly.The applications that connect to the DB instance send write-intensive traffic with variable client connections that sometimes increase significantly in a short period of time.Which solution should a SysOps administrator choose to meet these requirements?Read More →

Which solution will meet this requirement?

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

A company conducted a security audit of its AWS infrastructure. The audit identified that data was not encrypted in transit between application servers and aMySQL database that is hosted in Amazon RDS.After the audit, the company updated the application to use an encrypted connection. To prevent this problem from occurring again, the company’s database team needs to configure the database to require in-transit encryption for all connections.Which solution will meet this requirement?Read More →