Question 756 of 1,672
MLS-C01 Practice Question: Machine Learning Implementation and Operations
Exhibit
Refer to the exhibit.
{
"AlgorithmSpecification": {
"TrainingImage": "382416733822.dkr.ecr.us-west-2.amazonaws.com/sagemaker-xgboost:1.2-1",
"TrainingInputMode": "File"
},
"RoleArn": "arn:aws:iam::123456789012:role/SageMakerRole",
"InputDataConfig": [
{
"ChannelName": "train",
"DataSource": {
"S3DataSource": {
"S3DataType": "S3Prefix",
"S3Uri": "s3://my-bucket/train/"
}
},
"ContentType": "text/csv",
"CompressionType": "None"
}
],
"OutputDataConfig": {
"S3OutputPath": "s3://my-bucket/output/"
},
"ResourceConfig": {
"InstanceType": "ml.m5.large",
"InstanceCount": 1,
"VolumeSizeInGB": 10
},
"StoppingCondition": {
"MaxRuntimeInSeconds": 86400
}
}A data scientist submits a SageMaker training job with the provided configuration. The job fails immediately with the error 'Algorithm not found: 382416733822.dkr.ecr.us-west-2.amazonaws.com/sagemaker-xgboost:1.2-1'. What is the most likely cause?
⚠ Common exam trap
Many candidates confuse an 'Algorithm not found' error with a permissions issue (Option D) or a region mismatch (Option A), but the error message is specific to the image URI not existing in ECR, not to access or region problems.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The ECR repository URI is incorrect or the image does not exist.
The error 'Algorithm not found' indicates that the ECR repository URI specified in the training job configuration does not point to an existing image. The URI '382416733822.dkr.ecr.us-west-2.amazonaws.com/sagemaker-xgboost:1.2-1' is the standard SageMaker built-in XGBoost image for the us-west-2 region, but the version '1.2-1' may not exist or the URI is malformed. SageMaker training jobs require a valid ECR image URI to launch the container; if the image is not found in the registry, the job fails immediately with this error.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The training region is different from the image region.
Why it's wrong here
The URI includes us-west-2, and job is in same region.
- ✓
The ECR repository URI is incorrect or the image does not exist.
Why this is correct
The URI may have wrong account ID or tag.
- ✗
The input data format is incorrect.
Why it's wrong here
Error occurs before data is read.
- ✗
The IAM role does not have permission to pull the image.
Why it's wrong here
Would get access denied, not 'algorithm not found'.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.