MLA-C01 Practice Question: ML Solution Monitoring, Maintenance and Security
This MLA-C01 practice question tests your understanding of ml solution monitoring, maintenance and security. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 company uses Amazon Rekognition to moderate user-generated images. They want to set up a monitoring system that alerts the team if the number of inappropriate images flagged by the model exceeds a threshold. Which combination of AWS services should they use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon CloudWatch to publish custom metrics and create an alarm, and AWS Lambda to process images and publish metrics.
Option A is correct because Amazon CloudWatch can publish custom metrics (number of flagged images) and trigger alarms. AWS Lambda can process the images and publish the metric. Option B is incomplete because CloudWatch Logs alone cannot trigger alarms on custom metrics. Option C is incorrect because SNS alone does not monitor metrics. Option D is incorrect because AWS Config is for configuration tracking.
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.
✗
Amazon CloudWatch Logs to store inference logs and create a metric filter.
Why it's wrong here
Metric filters on logs can create alarms, but the scenario requires custom metrics, not logs.
✓
Amazon CloudWatch to publish custom metrics and create an alarm, and AWS Lambda to process images and publish metrics.
Why this is correct
Lambda can publish custom metrics to CloudWatch, which can trigger alarms.
Related concept
Static NAT maps one inside address to one outside address.
✗
AWS Config to track resource changes and trigger an SNS notification.
Why it's wrong here
Config is for resource configuration changes.
✗
Amazon Simple Notification Service (SNS) to send alerts when threshold is exceeded.
Why it's wrong here
SNS is a notification service, not a monitoring service.
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.
Trap categories for this question
Scenario analysis trap
Metric filters on logs can create alarms, but the scenario requires custom metrics, not logs.
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 MLA-C01 NAT questions on configuration and troubleshooting.
ML Solution Monitoring, Maintenance and Security — This question tests ML Solution Monitoring, Maintenance and Security — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Amazon CloudWatch to publish custom metrics and create an alarm, and AWS Lambda to process images and publish metrics. — Option A is correct because Amazon CloudWatch can publish custom metrics (number of flagged images) and trigger alarms. AWS Lambda can process the images and publish the metric. Option B is incomplete because CloudWatch Logs alone cannot trigger alarms on custom metrics. Option C is incorrect because SNS alone does not monitor metrics. Option D is incorrect because AWS Config is for configuration tracking.
What should I do if I get this MLA-C01 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 MLA-C01 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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