A company runs a content management system (CMS) that uses CloudFront to cache web pages. The CMS is updated frequently, and the operations team needs to ensure that updates are reflected quickly, but they also want to maintain a high cache hit ratio to reduce origin load. They are considering using cache invalidation. What is the best practice for this scenario?

Use versioned file names and update the references in the application

Invalidate the entire CloudFront distribution on every update

Use a short TTL for all content

Use a Lambda@Edge function to purge the cache on every update

A company runs a web application on EC2 instances in an Auto Scaling group behind an Application Load Balancer. The operations team notices that during scale-in events, the load balancer continues to send traffic to instances that are being terminated, causing connection errors for users. They need to ensure that instances are fully deregistered and stop receiving new connections before they are terminated. What should they configure?

Use a target tracking policy instead of a step scaling policy

An EC2 Auto Scaling lifecycle hook with a custom action to drain connections

Enable connection draining on the load balancer and set a sufficient timeout

Increase the Auto Scaling group's cooldown period

AWSCertified CloudOps Engineer - Associate

Domain 2Objective 1

Task 2.1: Implement Scalability and Elasticity. SOA-C03 Practice Questions (Page 4)

Part of the Content Domain 2: Reliability and Business Continuity domain, which makes up ~25% of our current practice bank. AWS does not publish an official question count, but from its 130-minute exam (~50–85 total, ~13–21 in this domain), expect 4–7 from this objective — we provide 32 practice questions to prepare you well beyond it. (estimate)

32questions here

7free pages

9concepts

Questions 16–20

16foundation · easy
Which component is responsible for distributing incoming traffic across the EC2 instances in an Auto Scaling group?
Select an answer first
17expert · hard
A company runs a content management system (CMS) that uses CloudFront to cache web pages. The CMS is updated frequently, and the operations team needs to ensure that updates are reflected quickly, but they also want to maintain a high cache hit ratio to reduce origin load. They are considering using cache invalidation. What is the best practice for this scenario?
Select an answer first
18application · medium
A company runs a web application on EC2 instances in an Auto Scaling group behind an Application Load Balancer. The operations team notices that during scale-in events, the load balancer continues to send traffic to instances that are being terminated, causing connection errors for users. They need to ensure that instances are fully deregistered and stop receiving new connections before they are terminated. What should they configure?
Select an answer first
19foundation · easy
Which Amazon RDS scaling option automatically increases the allocated storage when the database is running low on space?
Select an answer first
20foundation · easy
In DynamoDB provisioned mode, which feature can automatically adjust read and write capacity based on actual usage patterns?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to SOA-C03

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by AWS. “SOA-C03” is a trademark of its owner, used for identification only.

Task 2.1: Implement Scalability and Elasticity. SOA-C03 Practice Questions (Page 4)

Questions 16–20

Which component is responsible for distributing incoming traffic across the EC2 instances in an Auto Scaling group?

Which Amazon RDS scaling option automatically increases the allocated storage when the database is running low on space?

In DynamoDB provisioned mode, which feature can automatically adjust read and write capacity based on actual usage patterns?

Keep studying — Content Domain 2: Reliability and Business Continuity