Solutions Architect Deployment & Scalability Flashcards
7 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning โ missed cards come back until you master them.
Read the first 7 Solutions Architect Deployment & Scalability flashcards as text
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.
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.
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.
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.
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.
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.
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.