An ecommerce site is using Amazon ElastiCache with Memcached to store session state for a web application and to cache frequently used data.For the last month, users have been complaining about performance.The metric data for the Amazon EC2 instances and the Amazon RDS instance appear normal, but the eviction count metrics are high.What should be done to address this issue and improve performance?Read More →
A company has an application hosted in an Amazon EC2 instance and wants the application to access secure strings stored in AWS Systems Manager ParameterStore.When the application tries to access the secure string key value, it fails.Which factors could be the cause of this failure? (Choose two.)Read More →
A read only news reporting site with a combined web and application tier and a database tier that receives large and unpredictable traffic demands must be able to respond to these traffic fluctuations automatically.What AWS services should be used meet these requirements?Read More →
A developer creates a web application that runs on Amazon EC2 instances behind an Application Load Balancer (ALB).The instances are in an Auto Scaling group.The developer reviews the deployment and notices some suspicious traffic to the application.The traffic is malicious and is coming from a single public IP address.A SysOps administrator must block the public IP address.Which solution will meet this requirement?Read More →
A company has an application that uses an Amazon DynamoDB table to store user data.Every morning, a single-threaded process calls the DynamoDB API Scan operation to scan the entire table and generate a critical start-of-day report for management.A successful marketing campaign recently doubled the number of items in the table, and now the process takes too long to run and the report is not generated in time.A database specialist needs to improve the performance of the process.The database specialist notes that, when the process is running, 15% of the table’s provisioned read capacity units (RCUs) are being used.What should the database specialist do?Read More →
A company has an application that serves clients that are deployed in more than 20,000 retail storefront locations around the world.The application consists of backend web services that are exposed over HTTPS on port 443.The application is hosted on Amazon EC2 instances behind an Application Load Balancer(ALB).The retail locations communicate with the web application over the public internet.The company allows each retail location to register the IP address that the retail location has been allocated by its local ISP.The company’s security team recommends to increase the security of the application endpoint by restricting access to only the IP addresses registered by the retail locations.What should a solutions architect do to meet these requirements?Read More →
A machine learning (ML) specialist needs to solve a binary classification problem for a marketing dataset.The ML specialist must maximize the Area Under the ROC Curve (AUC) of the algorithm by training an XGBoost algorithm.The ML specialist must find values for the eta, alpha, min_child_weight, and max_depth hyperparameters that will generate the most accurate model.Which approach will meet these requirements with the LEAST operational overhead?Read More →
A company needs to have real-time access to image data while seamlessly maintaining a copy of the images in an offsite location for disaster recovery purposes.Which solution meets the requirement?Read More →
Your startup wants to implement an order fulfillment process for selling a personalized gadget that needs an average of 3-4 days to produce with some orders taking up to 6 months you expect 10 orders per day on your first day. 1000 orders per day after 6 months and 10,000 orders after 12 months.Orders coming in are checked for consistency men dispatched to your manufacturing plant for production quality control packaging shipment and payment processing If the product does not meet the quality standards at any stage of the process employees may force the process to repeat a step Customers are notified via email about order status and any critical issues with their orders such as payment failure.Your base architecture includes AWS Elastic Beanstalk for your website with an RDS MySQL instance for customer data and orders.How can you implement the order fulfillment process while making sure that the emails are delivered reliably?Read More →
A SysOps administrator is creating resources from an AWS.CloudFbrmation template that defines an Auto Scaling group of Amazon EC2 instances.The Auto Scaling group launch template provisions each EC2 instance by using a user data script.The creation of the Auto Scaling group resource is failing because of an error.The wait condition is not receiving the required number of signals.How should the SysOps administrator resolve this error?Read More →
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