A company is designing a new application that runs in a VPC on Amazon EC2 instances.The application stores data in Amazon S3 and uses Amazon DynamoDB as its database.For compliance reasons, the company prohibits all traffic between the EC2 instances and other AWS services from passing over the public internet.What can a solutions architect do to meet this requirement?Read More →
A data scientist is implementing a deep learning neural network model for an object detection task on images.The data scientist wants to experiment with a large number of parallel hyperparameter tuning jobs to find hyperparameters that optimize compute time.The data scientist must ensure that jobs that underperform are stopped.The data scientist must allocate computational resources to well-performing hyperparameter configurations.The data scientist is using the hyperparameter tuning job to tune the stochastic gradient descent (SGD) learning rate, momentum, epoch, and mini-batch size.Which technique will meet these requirements with LEAST computational time?Read More →
A user has setup an Auto Scaling group.The group has failed to launch a single instance for more than 24 hours.What will happen to Auto Scaling in this condition?Read More →
A company implements an Amazon EC2 Auto Scaling policy along with an Application Load Balancer to automatically recover unhealthy applications that run on Amazon EC2 instances.Which pillar of the AWS Well-Architected Framework does this action cover?Read More →
A Development team wants to instrument their code to provide more detailed information to AWS X-Ray than simple outgoing and incoming requests.This will generate large amounts of data, so the Development team wants to implement indexing so they can filter the data.What should the Development team do to achieve this?Read More →
A company’s security officer is concerned about the risk of AWS account root user logins and has assigned a security engineer to implement a notification solution for near-real-time alerts upon account root user logins.How should the security engineer meet these requirements?Read More →
A company has a standard three-tier architecture using two Availability Zones.During the company’s off season, users report that the website is not working.TheSolutions Architect finds that no changes have been made to the environment recently, the website is reachable, and it is possible to log in.However, when theSolutions Architect selects the `find a store near you` function, the maps provided on the site by a third-party RESTful API call do not work about 50% of the time after refreshing the page.The outbound API calls are made through Amazon EC2 NAT instances.What is the MOST likely reason for this failure and how can it be mitigated in the future?Read More →
A company needs to track spending in its AWS account.The company must receive a notification when current costs and forecasted costs exceed specific thresholds.Which solution will meet these requirements with the LEAST operational overhead?Read More →
A DevOps Engineer administers an application that manages video files for a video production company.The application runs on Amazon EC2 instances behind an ELB Application Load Balancer.The instances run in an Auto Scaling group across multiple Availability Zones.Data is stored in an Amazon RDS PostgreSQLMulti-AZ DB instance, and the video files are stored in an Amazon S3 bucket.On a typical day, 50 GB of new video are added to the S3 bucket.The Engineer must implement a multi-region disaster recovery plan with the least data loss and the lowest recovery times.The current application infrastructure is already described using AWS CloudFormation.Which deployment option should the Engineer choose to meet the uptime and recovery objectives for the system?Read More →
A database specialist has a fleet of Amazon RDS DB instances that use the default DB parameter group.The database specialist needs to associate a custom parameter group with some of the DB instances.After the database specialist makes this change, when will the instances be assigned to this new parameter group?Read More →
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