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Solutions Architect Deployment & 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 Solutions Architect Deployment & Scalability flashcards as text

  1. An application experiences unpredictable traffic spikes. Which Auto Scaling policy responds fastest to sudden load increases?

    Answer: Target tracking scaling

    Target tracking scaling continuously adjusts capacity to maintain a specified metric (e.g., 50% CPU), reacting faster than simple or step policies.

  2. A company wants zero-downtime deployments on ECS Fargate. Which deployment strategy should they use?

    Answer: Blue/green via CodeDeploy

    ECS blue/green deployments via CodeDeploy shift traffic from the old (blue) task set to the new (green) task set with automatic rollback on failure.

  3. You need to deploy a stateful application across multiple AZs with persistent storage per instance. Which service is best suited?

    Answer: Amazon EC2 Auto Scaling with EBS

    EC2 Auto Scaling with EBS volumes provides per-instance persistent block storage, essential for stateful applications across multiple AZs.

  4. Which CloudFormation feature allows you to deploy the same template across multiple accounts and regions simultaneously?

    Answer: CloudFormation StackSets

    CloudFormation StackSets extend stack deployment across multiple AWS accounts and regions with a single operation.

  5. An ALB target group has instances in two AZs. One AZ has 2 instances and the other has 8. What feature ensures equal traffic distribution across AZs?

    Answer: Cross-zone load balancing

    Cross-zone load balancing distributes requests evenly across all registered targets in all enabled AZs, regardless of instance count per AZ.

  6. A company wants to decouple application tiers so that the front end can scale independently during traffic bursts. Which service best achieves this?

    Answer: Amazon SQS

    Amazon SQS acts as a buffer between application tiers, allowing each tier to scale independently without blocking the other.

  7. Which EC2 Auto Scaling feature prevents scale-in from terminating instances that are still processing long-running jobs?

    Answer: Lifecycle hooks

    Lifecycle hooks pause scale-in termination, allowing instances to complete in-flight work (e.g., drain a queue) before being terminated.