The correct answer involves using both AWS Config and AWS CloudFormation drift detection as valid approaches for managing configuration drift in an AWS environment. AWS Config continuously monitors your resource configurations against desired baselines and can trigger automatic remediation when drift is detected, while CloudFormation drift detection specifically identifies resources that have been modified outside of the CloudFormation stack, allowing you to compare the actual stack resources against the intended template. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this question tests your ability to distinguish between monitoring, logging, and drift detection services—a common trap is confusing CloudTrail’s API logging or Systems Manager Patch Manager with configuration drift detection. Remember that drift detection is about resource state deviation, not operational changes or patching. A useful memory tip: think of AWS Config as the “continuous watchdog” for all resources, and CloudFormation drift detection as the “stack-specific snapshot comparison.”
DOP-C02 Configuration Management and IaC Practice Question
This DOP-C02 practice question tests your understanding of configuration management and iac. 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.
Which TWO options are valid approaches for managing configuration drift in an AWS environment? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Config rules to evaluate resource configurations against desired policies.
Option A is correct because AWS Config can detect drift from desired configuration. Option D is correct because CloudFormation drift detection identifies changes to resources. Option B is wrong because Systems Manager Patch Manager is for patching, not drift detection. Option C is wrong because CloudTrail is for API logging. Option E is wrong because CodePipeline is for CI/CD.
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
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Use AWS Config rules to evaluate resource configurations against desired policies.
Why this is correct
AWS Config can evaluate compliance and detect drift.
Related concept
Static NAT maps one inside address to one outside address.
✗
Use AWS CodePipeline to automatically redeploy infrastructure when changes are detected.
Why it's wrong here
CodePipeline is for CI/CD, not drift detection.
✗
Use AWS Systems Manager Patch Manager to keep instances patched.
Why it's wrong here
Patch Manager does not detect configuration drift.
✗
Use AWS CloudTrail to monitor API calls that modify resources.
Why it's wrong here
CloudTrail logs changes but does not compare against a desired state.
✓
Use AWS CloudFormation drift detection to identify resources that have been modified outside of CloudFormation.
Why this is correct
CloudFormation drift detection compares actual resource state with template.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
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
How to think about this question
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.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
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
How this comes up in practice
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
Got this wrong? Here's your next step.
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.
Configuration Management and IaC — This question tests Configuration Management and IaC — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Use AWS Config rules to evaluate resource configurations against desired policies. — Option A is correct because AWS Config can detect drift from desired configuration. Option D is correct because CloudFormation drift detection identifies changes to resources. Option B is wrong because Systems Manager Patch Manager is for patching, not drift detection. Option C is wrong because CloudTrail is for API logging. Option E is wrong because CodePipeline is for CI/CD.
What should I do if I get this DOP-C02 question wrong?
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.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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