An ecommerce company wants to launch a one-deal-a-day website on AWS. Each day will feature exactly one product on sale for a period of 24 hours. The company wants to be able to handle millions of requests each hour with millisecond latency during peak hours.Which solution will meet these requirements with the LEAST operational overhead?
Answer(s): D
A concise justification:D) Uses S3 for static content with CloudFront, plus API Gateway and Lambda for backend, and DynamoDB for scalable, low-latency data storage. This serverless approach minimizes operational overhead, scales to millions of requests per hour with millisecond latency, and avoids provisioning/manage servers or clusters.A) S3 with CloudFront alone handles static content and low-latency delivery but lacks a scalable, serverless backend and suitable data store for dynamic order data.B) EC2 Auto Scaling with ALB incurs more operational effort and management; scaling the backend and database is heavier.C) EKS with Cluster Autoscaler adds Kubernetes management complexity; still requires relational DB and more maintenance.
A solutions architect is using Amazon S3 to design the storage architecture of a new digital media application. The media files must be resilient to the loss of an Availability Zone. Some files are accessed frequently while other files are rarely accessed in an unpredictable pattern. The solutions architect must minimize the costs of storing and retrieving the media files.Which storage option meets these requirements?
Answer(s): B
S3 Intelligent-Tiering automatically moves objects between frequent and infrequent access tiers based on usage, minimizing cost while providing the same-namespace resilience and durability as S3, including across AZs. A) S3 Standard is durable and highly available but not cost-optimized for unpredictable access patterns. C) S3 Standard-IA lowers storage cost but incurs retrieval fees and does not optimize for unpredictable access automatically. D) S3 One Zone-IA stores data in a single AZ, reducing durability resilience to AZ loss, which contradicts the requirement. B) correctly balances cost across access patterns and preserves data across AZs without manual tiering.
A company is storing backup files by using Amazon S3 Standard storage. The files are accessed frequently for 1 month. However, the files are not accessed after 1 month. The company must keep the files indefinitely.Which storage solution will meet these requirements MOST cost-effectively?
S3 Glacier Deep Archive is the lowest-cost storage for long-term data that is rarely accessed, making B cost-optimal for keeping backups indefinitely after an initial month of frequent access.A) S3 Intelligent-Tiering adds monitoring costs and may still tier to frequent access tiers; not as cost-effective for long-term retention with no access. B) Correct: transitions after 1 month to Glacier Deep Archive minimizes storage cost while preserving access if needed in future. C) S3 Standard-IA incurs retrieval costs and higher per-GB price than Glacier Deep Archive for long-term, infrequently accessed data. D) One Zone-IA stores data in a single AZ and has higher risk of data loss and higher retrieval costs relative to Glacier Deep Archive for immutable backups.
A company observes an increase in Amazon EC2 costs in its most recent bill. The billing team notices unwanted vertical scaling of instance types for a couple of EC2 instances. A solutions architect needs to create a graph comparing the last 2 months of EC2 costs and perform an in-depth analysis to identify the root cause of the vertical scaling.How should the solutions architect generate the information with the LEAST operational overhead?
The correct answer is B. Cost Explorer’s granular filtering allows you to drill down EC2 costs by instance type, over a two-month window, enabling fast, insight-driven root-cause analysis with minimal setup and operational overhead.A) AWS Budgets focuses on cost thresholds and alerts, not in-depth per-instance-type cost analysis.C) Billing dashboard graphs offer basic visuals but lack the granular, customizable filters needed for root-cause analysis by instance type and time range.D) Cost and Usage Reports with QuickSight provides full analytics but involves additional data processing and setup, increasing overhead.
A company is designing an application. The application uses an AWS Lambda function to receive information through Amazon API Gateway and to store the information in an Amazon Aurora PostgreSQL database.During the proof-of-concept stage, the company has to increase the Lambda quotas significantly to handle the high volumes of data that the company needs to load into the database. A solutions architect must recommend a new design to improve scalability and minimize the configuration effort.Which solution will meet these requirements?
A) Using EC2 with Tomcat increases management overhead and does not leverage Lambda scaling; JDBC on EC2 breaks the serverless pattern and adds provisioning complexity. B) DynamoDB/DAX changes database type; adds unnecessary complexity and does not address Lambda quota limitations or seamless scaling into Aurora PostgreSQL. C) SNS coupling is a pub/sub pattern but without guaranteed ordering or durable backpressure between ingestion and load, risking data loss or throttling. D) SQS decouples ingestion from processing, provides backpressure, and allows Lambda to poll batches, reducing concurrent execution pressure and scaling smoothly into Aurora PostgreSQL.
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