AWS Solutions Architect Deployment & Scalability 3

Question 1

A solutions architect needs to gradually shift 10% of production traffic to a new Lambda function version for testing. Which feature enables this?

Accepted Answer

Lambda aliases with weighted routing

Answer

Lambda aliases support weighted routing, allowing you to split traffic percentages between two function versions for canary or linear deployments.

Question 2

Your Auto Scaling group must launch replacement instances before terminating old ones during a rolling update. Which update policy achieves this?

Accepted Answer

AutoScalingRollingUpdate with MinInstancesInService

Answer

AutoScalingRollingUpdate with MinInstancesInService ensures a minimum number of healthy instances remain available throughout the update.

Question 3

Which AWS service provides managed container orchestration with the least operational overhead for deploying microservices?

Accepted Answer

Amazon ECS with Fargate

Answer

ECS with Fargate is serverless container orchestration — AWS manages the underlying infrastructure, minimizing operational overhead.

Question 4

An application on Elastic Beanstalk requires a configuration change that causes downtime. Which deployment policy minimizes user impact?

Accepted Answer

Immutable

Answer

Immutable deployments launch a fresh set of instances with the new version; traffic is only cut over after health checks pass, eliminating downtime.

Question 5

A startup needs to scale their database read capacity dynamically based on load without changing application code. What should they implement?

Accepted Answer

Aurora Auto Scaling with read replicas

Answer

Aurora Auto Scaling automatically adds or removes Aurora Replicas based on CloudWatch metrics, scaling read capacity without application changes.

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