A user has created a VPC with CIDR 20.0.0.0/16 using the wizard.The user has created public and VPN only subnets along with hardware VPN access to connect to the user’s data center.The user has not yet launched any instance as well as modified or deleted any setup.He wants to delete this VPC from the console.Will the console allow the user to delete the VPC?Read More →
A financial company is trying to detect credit card fraud.The company observed that, on average, 2% of credit card transactions were fraudulent.A data scientist trained a classifier on a year’s worth of credit card transactions data.The model needs to identify the fraudulent transactions (positives) from the regular ones(negatives).The company’s goal is to accurately capture as many positives as possible.Which metrics should the data scientist use to optimize the model? (Choose two.)Read More →
A company wants to move a multi-tiered application from on premises to the AWS Cloud to improve the application’s performance.The application consists of application tiers that communicate with each other by way of RESTful services.Transactions are dropped when one tier becomes overloaded.A solutions architect must design a solution that resolves these issues and modernizes the application.Which solution meets these requirements and is the MOST operationally efficient?Read More →
A database specialist needs to review and optimize an Amazon DynamoDB table that is experiencing performance issues.A thorough investigation by the database specialist reveals that the partition key is causing hot partitions, so a new partition key is created.The database specialist must effectively apply this new partition key to all existing and new data.How can this solution be implemented?Read More →
A company is deploying a new application that uses Amazon EC2 instances.The company needs a solution to query application logs and AWS account API activity.Which solution will meet these requirements?Read More →
A company has a multi-account environment.Account A has a production application that is hosted on an Amazon EC2 instance.The application needs to query data in an Amazon DynamoDB table that is hosted in Account B.A SysOps administrator needs to provide the EC2 instance in Account A with access to the DynamoDB table in Account B.What is the MOST secure solution that will meet these requirements?Read More →
A company is creating a REST API to share information with six of its partners based in the United States.The company has created an Amazon API GatewayRegional endpoint.Each of the six partners will access the API once per day to post daily sales figures.After initial deployment, the company observes 1,000 requests per second originating from 500 different IP addresses around the world.The company believes this traffic is originating from a botnet and wants to secure its API while minimizing cost.Which approach should the company take to secure its API?Read More →
A Security Engineer discovered a vulnerability in an application running on Amazon ECS.The vulnerability allowed attackers to install malicious code.Analysis of the code shows it exfiltrates data on port 5353 in batches at random time intervals.While the code of the containers is being patched, how can Engineers quickly identify all compromised hosts and stop the egress of data on port 5353?Read More →
A development team uses AWS CodeDeploy to deploy software changes to Amazon EC2 instances.The deployments begin to fail.The team traces the problem to a specific EC2 instance.The CodeDeploy agent’s log file contains the following error message:InvalidSignatureException Signature expired: |time| is now earlier than |time|What is the underlying cause of this issue?Read More →
A developer needs to use a standardized template to create copies of a company’s AWS architecture for development, test, and production environments.Which AWS service should the developer use to meet this requirement?Read More →
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