How should the company prepare the data for the model to improve the model’s accuracy?

2026-04-06
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In: MLS-C01
With: 2 Comments

A company is building a predictive maintenance model for its warehouse equipment.The model must predict the probability of failure of all machines in the warehouse.The company has collected 10,000 event samples within 3 months.The event samples include 100 failure cases that are evenly distributed across 50 different machine types.How should the company prepare the data for the model to improve the model’s accuracy?Read More →

What should the solutions architect do to reduce the overall data transfer costs?

2026-04-06
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In: SAA-C02
With: 2 Comments

A solutions architect is creating an application that will handle batch processing of large amounts of data.The input data will be held in Amazon S3 and the output data will be stored in a different S3 bucket.For processing, the application will transfer the data over the network between multiple Amazon EC2 instances.What should the solutions architect do to reduce the overall data transfer costs?Read More →

What should the database specialist do to enable encryption at rest for the Amazon DocumentDB cluster?

2026-04-06
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In: DBS-C01
With: 2 Comments

An ecommerce company migrates an on-premises MongoDB database to Amazon DocumentDB (with MongoDB compatibility).After the migration, a database specialist realizes that encryption at rest has not been turned on for the Amazon DocumentDB cluster.What should the database specialist do to enable encryption at rest for the Amazon DocumentDB cluster?Read More →

Which solution meets these requirements?

2026-04-06
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In: SAP-C01
With: 2 Comments

A company has five physical data centers in specific locations around the world.Each data center has hundreds of physical servers with a mix of Windows andLinux-based applications and database services.Each data center also has an AWS Direct Connect connection of 10 Gbps to AWS with a company-approvedVPN solution to ensure that data transfer is secure.The company needs to shut down the existing data centers as quickly as possible and migrate the servers and applications to AWS.Which solution meets these requirements?Read More →

What should the security engineer do so that the function can rotate the secret?

2026-04-06
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In: SCS-C01
With: 2 Comments

A company is running an Amazon RDS for MySQL DB instance in a VPC.The VPC must not send or receive network traffic through the internet.A security engineer wants to use AWS Secrets Manager to rotate the DB instance credentials automatically.Because of a security policy, the security engineer cannot use the standard AWS Lambda function that Secrets Manager provides to rotate the credentials.The security engineer deploys a custom Lambda function in the VPC.The custom Lambda function will be responsible for rotating the secret in Secrets Manager.The security engineer edits the DB instance’s security group to allow connections from this function.When the function is invoked, the function cannot communicate with Secrets Manager to rotate the secret properly.What should the security engineer do so that the function can rotate the secret?Read More →

Which solution meets these requirements?

2026-04-06
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In: MLS-C01
With: 2 Comments

A company wants to create a data repository in the AWS Cloud for machine learning (ML) projects.The company wants to use AWS to perform complete ML lifecycles and wants to use Amazon S3 for the data storage.All of the company’s data currently resides on premises and is 40 ื€ยขื€โ€™ in size.The company wants a solution that can transfer and automatically update data between the on-premises object storage and Amazon S3.The solution must support encryption, scheduling, monitoring, and data integrity validation.Which solution meets these requirements?Read More →

Which solution will meet these requirements?

2026-04-06
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In: SAA-C02
With: 2 Comments

A company has a web application with sporadic usage patterns.There is heavy usage at the beginning of each month, moderate usage at the start of each week, and unpredictable usage during the week.The application consists of a web server and a MySQL database server running inside the data center.The company would like to move the application to the AWS Cloud, and needs to select a cost-effective database platform that will not require database modifications.Which solution will meet these requirements?Read More →

Which combination of steps should the Database Specialist take to meet the logging and retention requirements?

2026-04-06
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In: DBS-C01
With: 2 Comments

A company is using Amazon RDS for PostgreSQL.The Security team wants all database connection requests to be logged and retained for 180 days.The RDS for PostgreSQL DB instance is currently using the default parameter group.A Database Specialist has identified that setting the log_connections parameter to 1 will enable connections logging.Which combination of steps should the Database Specialist take to meet the logging and retention requirements? (Choose two.)Read More →