A data scientist wants to improve the fit of a machine learning (ML) model that predicts house prices.The data scientist makes a first attempt to fit the model, but the fitted model has poor accuracy on both the training dataset and the test dataset.Which steps must the data scientist take to improve model accuracy? (Choose three.)Read More →
A company receives 10 TB of instrumentation data each day from several machines located at a single factory.The data consists of JSON files stored on a storage area network (SAN) in an on-premises data center located within the factory.The company wants to send this data to Amazon S3 where it can be accessed by several additional systems that provide critical near-real-lime analytics.A secure transfer is important because the data is considered sensitive.Which solution offers the MOST reliable data transfer?Read More →
A database specialist needs to configure an Amazon RDS for MySQL DB instance to close non-interactive connections that are inactive after 900 seconds.What should the database specialist do to accomplish this task?Read More →
A company is running an application on Amazon EC2 instances in an Auto Scaling group.Recently, an issue occurred that prevented EC2 instances from launching successfully, and it took several hours for the Support team to discover the issue.The Support team wants to be notified by email whenever an EC2 instance does not start successfully.Which action will accomplish this?Read More →
A company needs to enforce tagging requirements for Amazon DynamoDB tables in its AWS accounts.A SysOps administrator must implement a solution to identify and remediate all DynamoDB tables that do not have the appropriate tags.Which solution will meet these requirements with the LEAST operational overhead?Read More →
A user is planning to host a Highly Available system on the AWS VPC.Which of the below mentioned statements is helpful in this scenario?Read More →
While securing the connection between a company’s VPC and its on-premises data center, a Security Engineer sent a ping command from an on-premises host(IP address 203.0.113.12) to an Amazon EC2 instance (IP address 172.31.16.139).The ping command did not return a response.The flow log in the VPC showed the following:2 123456789010 eni-1235b8ca 203.0.113.12 172.31.16.139 0 0 1 4 336 1432917027 1432917142 ACCEPT OK2 123456789010 eni-1235b8ca 172.31.16.139 203.0.113.12 0 0 1 4 336 1432917094 1432917142 REJECT OKWhat action should be performed to allow the ping to work?Read More →
A company is developing a serverless ecommerce web application.The application needs to make coordinated, all-or-nothing changes to multiple items in the company’s inventory table in Amazon DynamoDB.Which solution will meet these requirements?Read More →
Which AWS services offer gateway VPC endpoints that can be used to avoid sending traffic over the internet? (Choose two.)Read More →
Recently several critical files were mistakenly deleted from a shared Amazon S3 bucket.A SysOps Administrator needs to prevent accidental deletions from occurring in the future by enabling MFA Delete.Once enabled, which bucket activities will require MFA authentication? (Choose two.)Read More →
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