This MLS-C01 practice question tests your understanding of modeling. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 retail company uses Amazon SageMaker to train a model for product demand forecasting. The dataset contains daily sales data for 10,000 products over 3 years. The data includes features like price, promotions, holidays, and seasonality. The data scientist uses a linear regression model and gets an RMSE of 50 units. However, the business requires more accurate forecasts, especially for products with high variability. The scientist notices that the residuals show a pattern: the model underestimates demand during promotional periods. Which approach should the scientist take to improve the model?
Add interaction features between promotion and other variables.
Interaction terms capture combined effects.
Collect more historical data for training.
Why wrong: Does not address the systematic bias during promotions.
Use a deep learning model like LSTM.
Why wrong: May not be necessary and could overfit.
Remove promotion features to simplify the model.
Why wrong: Removes valuable signal.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Add interaction features between promotion and other variables.
Option D is correct because adding interaction terms between promotion and other features can capture the promotional effect. Option A is wrong because more data may not fix the bias. Option B is wrong because moving to deep learning may be overkill. Option C is wrong because excluding promotions removes important information.
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.
Add interaction features between promotion and other variables.
Why this is correct
Interaction terms capture combined effects.
Related concept
Static NAT maps one inside address to one outside address.
Collect more historical data for training.
Why it's wrong here
Does not address the systematic bias during promotions.
Use a deep learning model like LSTM.
Why it's wrong here
May not be necessary and could overfit.
Remove promotion features to simplify the model.
Why it's wrong here
Removes valuable signal.
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 MLS-C01 NAT questions on configuration and troubleshooting.
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FAQ
Modeling — This question tests Modeling — Static NAT maps one inside address to one outside address..
The correct answer is: Add interaction features between promotion and other variables. — Option D is correct because adding interaction terms between promotion and other features can capture the promotional effect. Option A is wrong because more data may not fix the bias. Option B is wrong because moving to deep learning may be overkill. Option C is wrong because excluding promotions removes important information.
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 MLS-C01 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 MLS-C01 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 MLS-C01 exam.
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