Quick Answer
The answer is Amazon SNS and Amazon EventBridge (formerly CloudWatch Events). This combination is correct because EventBridge captures Auto Scaling lifecycle events, such as instance launch or termination, and routes them directly to an SNS topic, which then delivers notifications via email, SMS, or other endpoints. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this scenario tests your understanding of event-driven monitoring for Auto Scaling groups, often appearing as a trap where candidates mistakenly choose CloudTrail (which only logs API calls) or Lambda (which is unnecessary here since SNS alone suffices). A common pitfall is overcomplicating the solution with additional services when EventBridge and SNS provide a clean, real-time notification pipeline. To remember this, think: "Events bridge the gap to SNS for health alerts" — EventBridge captures the event, SNS sends the shout.
This DOP-C02 practice question tests your understanding of monitoring and logging. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A DevOps engineer wants to monitor the health of an Auto Scaling group and receive notifications when instances are launched or terminated. Which TWO AWS services can be used together to achieve this?
AWS CloudTrail.
Why wrong: CloudTrail logs events but does not send notifications.
AWS Config.
Why wrong: Config records resource changes but is not designed for real-time notifications.
Amazon EventBridge.
EventBridge can match Auto Scaling events and publish to SNS.
Amazon SNS.
SNS can send email/SMS notifications.
AWS Lambda.
Why wrong: Lambda could be used but is not necessary; EventBridge+SNS is simpler.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Amazon EventBridge.
Option A and Option C are correct. Amazon SNS can send notifications, and CloudWatch Events (now Amazon EventBridge) can capture Auto Scaling lifecycle events and trigger SNS. Option B (CloudTrail) logs API calls but does not directly trigger notifications. Option D (Lambda) can be used but is not required; SNS alone is sufficient. Option E (Config) records configuration changes but is not the primary choice for real-time notifications.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
AWS CloudTrail.
Why it's wrong here
CloudTrail logs events but does not send notifications.
AWS Config.
Why it's wrong here
Config records resource changes but is not designed for real-time notifications.
Amazon EventBridge.
Why this is correct
EventBridge can match Auto Scaling events and publish to SNS.
Related concept
Static NAT maps one inside address to one outside address.
Amazon SNS.
Why this is correct
SNS can send email/SMS notifications.
Related concept
Static NAT maps one inside address to one outside address.
AWS Lambda.
Why it's wrong here
Lambda could be used but is not necessary; EventBridge+SNS is simpler.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DOP-C02 NAT questions on configuration and troubleshooting.
Monitoring and Logging — study guide chapter
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FAQ
Monitoring and Logging — This question tests Monitoring and Logging — Static NAT maps one inside address to one outside address..
The correct answer is: Amazon EventBridge. — Option A and Option C are correct. Amazon SNS can send notifications, and CloudWatch Events (now Amazon EventBridge) can capture Auto Scaling lifecycle events and trigger SNS. Option B (CloudTrail) logs API calls but does not directly trigger notifications. Option D (Lambda) can be used but is not required; SNS alone is sufficient. Option E (Config) records configuration changes but is not the primary choice for real-time notifications.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DOP-C02 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
This DOP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DOP-C02 exam.
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