Solutions Architect Cost Optimization & Performance Flashcards
7 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Solutions Architect Cost Optimization & Performance flashcards as text
A company needs to cache database query results to improve performance. Which managed service reduces database load and latency for ElastiCache Redis?
Answer: Amazon ElastiCache for Redis
ElastiCache for Redis provides sub-millisecond in-memory caching that reduces database load and dramatically improves read latency.
Which S3 feature reduces costs when the same data is stored in multiple buckets across accounts?
Answer: S3 Storage Lens
S3 Storage Lens provides organization-wide visibility into storage usage and activity trends, helping identify redundant data and optimization opportunities.
An architect is designing a batch processing system that runs nightly for 2 hours. Which combination maximizes cost efficiency?
Answer: Spot Instances with SQS for fault tolerance
Spot Instances with SQS queuing handle interruptions gracefully while providing up to 90% cost savings for batch workloads.
Which pricing model for AWS Lambda reduces costs for functions that run consistently throughout the month?
Answer: Compute Savings Plans
Compute Savings Plans apply to Lambda usage and provide up to 17% savings in exchange for a 1 or 3-year commitment to consistent compute spend.
A web application has unpredictable traffic spikes. Which architecture pattern improves performance and reduces costs during low-traffic periods?
Answer: EC2 Auto Scaling with Target Tracking policy
Auto Scaling with Target Tracking automatically adds capacity during spikes and removes it during quiet periods, optimizing both performance and cost.
Which data transfer scenario in AWS incurs NO charges?
Answer: Data transferred from EC2 to S3 in the same region
Data transferred between EC2 and S3 within the same AWS region is free of charge.
An application running on EC2 needs to query DynamoDB millions of times per day. What reduces both latency and cost?
Answer: Use Amazon DAX as a caching layer
Amazon DAX (DynamoDB Accelerator) provides microsecond read latency and reduces DynamoDB read capacity unit consumption by caching responses.