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Everything needed to plan for the AWS Machine Learning Specialty (MLS-C01) exam: number of questions, time limit, passing score, and the official domain weightings. For the study checklist itself, see the MLS-C01 study guide.
AWS Machine Learning Specialty (MLS-C01) is a Professional level AWS certification exam with about 65 questions in 180 minutes, requiring a scaled score of 750 to pass. It covers 4 official domains: Modeling (36%); Exploratory Data Analysis (24%); Data Engineering (20%); ML Implementation and Operations (20%).
Exam code
MLS-C01
Questions
~65
Time limit
180 min
Passing score
750
Official domains
4
Level
Professional
Provider
AWS
Practice questions
300+ on CertStud
| Domain | Weight | What it covers |
|---|---|---|
| Modeling | 36% | Frame ML problems, train models, perform hyperparameter tuning |
| Exploratory Data Analysis | 24% | Sanitize and prepare data for modeling, perform feature engineering |
| Data Engineering | 20% | Create data repositories and ingest, transform data for ML |
| ML Implementation and Operations | 20% | Deploy and operationalize ML solutions, monitor performance |
Percentages reflect published official domain weightings. Prerequisite knowledge and current scoring rules are confirmed on the AWS exam page before booking.
The MLS-C01 exam has approximately 65 questions. Question counts can vary slightly between deliveries, so treat 65 as the planning figure rather than a fixed number.
Candidates get about 180 minutes to complete the MLS-C01 exam, which works out to roughly 3 minute(s) per question at 65 questions.
The MLS-C01 exam requires a scaled score of 750 to pass. Scores are reported on a scaled rather than a raw percentage basis, so a passing result does not correspond to a simple count of correct answers.
The MLS-C01 exam covers 4 official domains: Data Engineering (20%), Exploratory Data Analysis (24%), Modeling (36%), ML Implementation and Operations (20%).
Modeling carries the heaviest weighting on the MLS-C01 exam at 36% of the exam. Frame ML problems, train models, perform hyperparameter tuning
MLS-C01 is the exam code for AWS Machine Learning Specialty (AWS Certified Machine Learning - Specialty), a Professional level AWS certification exam covering 4 domains.
The MLS-C01 exam reports a scaled score of 750 on a scaled score. Plan for roughly 65 questions across 180 minutes, weighted by domain: 36% Modeling, 24% Exploratory Data Analysis, 20% Data Engineering, 20% ML Implementation and Operations.
CertStud offers free MLS-C01 practice questions with detailed explanations, plus full-length practice exams and flashcards at https://certstud.com/certifications/aws/ml-specialty. Start with 10 free questions at https://certstud.com/try-free.