Design high-performing architectures
31 free practice questions with explanations
PassNova has 31 free AWS Solutions Architect (SAA-C03) practice questions on Design high-performing architectures, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
Design high-performing architectures: example questions & answers
Here are 6 example questions from this topic. Practise the full set of 31 free in the browser.
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A global application needs to serve static content with the lowest possible latency to users worldwide. Which AWS service should be used?
- A Amazon S3 Transfer Acceleration
- B Amazon CloudFront ✓
- C AWS Global Accelerator
- D Elastic Load Balancing
Answer: Amazon CloudFront is a content delivery network that caches static content at edge locations close to users, reducing latency for global content delivery.
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A read-heavy application experiences high load on its RDS database due to repeated read queries. Which solution improves read performance MOST cost-effectively?
- A Enable Multi-AZ deployment
- B Add RDS read replicas ✓
- C Increase the instance storage size
- D Switch to a larger single instance only
Answer: RDS read replicas offload read traffic from the primary database, scaling read capacity horizontally and improving performance for read-heavy workloads.
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An application needs to route users to the nearest healthy regional endpoint and improve global TCP/UDP performance using the AWS backbone. Which service is MOST suitable?
- A Amazon CloudFront
- B AWS Global Accelerator ✓
- C Amazon Route 53 latency routing only
- D Elastic Load Balancing
Answer: AWS Global Accelerator uses the AWS global network and Anycast IPs to route traffic to the nearest healthy endpoint, improving performance and availability for TCP/UDP workloads.
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A company runs a stateless web application and wants it to automatically scale based on CPU utilization. Which combination of services achieves this?
- A A single large EC2 instance with CloudWatch
- B EC2 Auto Scaling group with a target tracking scaling policy ✓
- C An RDS instance with read replicas
- D An S3 bucket with versioning
Answer: An EC2 Auto Scaling group with a target tracking policy automatically adds or removes instances to maintain a target CPU utilization, scaling the stateless app with demand.
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A company wants to cache frequently accessed data in memory to reduce database load and improve application response times. Which service should be used?
- A Amazon RDS
- B Amazon ElastiCache ✓
- C Amazon S3
- D Amazon EFS
Answer: Amazon ElastiCache provides in-memory caching with Redis or Memcached, reducing read load on the database and improving application latency for frequently accessed data.
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A company processes streaming data from thousands of IoT devices in real time and needs to perform analytics on the stream. Which service is MOST appropriate?
- A Amazon SQS
- B Amazon Kinesis Data Streams ✓
- C Amazon SNS
- D AWS Batch
Answer: Amazon Kinesis Data Streams is designed to ingest and process large volumes of streaming data in real time, supporting analytics on high-throughput device data.