Practice Test GeeksAWS Practice Test
← All AWS Flashcard Decks

Certified Solutions Architect High Availability and Scalability 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 Certified Solutions Architect High Availability and Scalability flashcards as text

  1. A company uses S3 to host static assets globally. Which combination provides the lowest latency content delivery with high availability?

    Answer: CloudFront distribution with S3 origin + Route 53 failover routing

    CloudFront caches content at edge locations globally and Route 53 failover routing provides origin redundancy for maximum availability.

  2. An Aurora Serverless v2 cluster needs to scale instantly under unpredictable workloads. What unit does Aurora Serverless v2 use to define scaling boundaries?

    Answer: Aurora Capacity Units (ACUs)

    Aurora Serverless v2 scales in fine-grained increments of Aurora Capacity Units (ACUs), with each ACU representing approximately 2 GB of memory.

  3. A Network Load Balancer is configured for a TCP application that requires client IP preservation. Which NLB feature achieves this?

    Answer: Proxy Protocol v2

    Proxy Protocol v2 prepends a header to TCP connections carrying the original client IP, since NLB operates at Layer 4 without HTTP headers.

  4. A company wants EC2 Spot Instances in their Auto Scaling group but needs to minimize interruptions. Which strategy maintains availability when Spot capacity is reclaimed?

    Answer: Configure a mixed instances policy with multiple instance types and purchase options

    A mixed instances policy across multiple instance types and On-Demand/Spot mix ensures the ASG replaces interrupted Spot capacity with available alternatives.

  5. Which ElastiCache feature allows read traffic to be distributed across multiple nodes in a Redis cluster for horizontal read scaling?

    Answer: ElastiCache Redis read replicas within a replication group

    A Redis replication group includes a primary node for writes and up to 5 read replicas, allowing clients to distribute reads across replicas.

  6. A company needs a fully managed message queue that automatically scales to handle millions of messages per second without pre-provisioning. Which AWS service is best suited?

    Answer: Amazon SQS Standard queue

    SQS Standard queues scale automatically to any throughput level without capacity planning, making them ideal for decoupled, massively scalable architectures.

  7. An application uses EC2 instances behind an ALB. During deployment, the team needs to remove instances from load balancing without dropping active connections. Which feature enables this?

    Answer: Target group deregistration delay (connection draining)

    Deregistration delay keeps a deregistering target in service for a configurable period (default 300s) to complete in-flight requests before termination.