An ML team is using Amazon SageMaker to train a model on a dataset stored in Amazon S3. The training job is failing with `S3DownloadFailed` errors. The team has verified that the S3 bucket exists and the IAM role has `s3:GetObject` permissions. The dataset is 1 TB and consists of many small files. Which of the following is the most likely cause and solution?

The S3 bucket has a lifecycle policy that deletes objects during training. Remove the lifecycle policy.

The training job is exceeding the S3 request rate limit due to the large number of small files. Consolidate the files into larger files.

The S3 bucket is in a different Region than the SageMaker training job, causing network latency. Move the bucket to the same Region.

The IAM role does not have `s3:ListBucket` permission. Add the permission to the role.

AWSCertified Machine Learning Engineer - Associate

Domain 1Objective 1

Task 1.1: Ingest and Store Data MLA-C01 Practice Questions (Page 3)

Part of the Content Domain 1: Data Preparation for Machine Learning (ML) domain, which accounts for 28% of the MLA-C01 exam. AWS does not publish an official question count, but from its 130-minute exam (~50–85 total, ~14–24 in this domain), expect 5–8 from this objective — we provide 27 practice questions to prepare you well beyond it. (estimate)

27questions here

6free pages

10concepts

28%of the exam

Questions 11–15

11foundation · easy
Which AWS storage service is best suited for a relational database that requires transactional consistency and is accessed via SQL queries?
Select an answer first
12foundation · easy
Which AWS storage service provides a fully managed, POSIX-compliant file system that can be mounted on multiple Amazon EC2 instances simultaneously for shared access to ML training data?
Select an answer first
13expert · hard
An ML team is using Amazon SageMaker to train a model on a dataset stored in Amazon S3. The training job is failing with `S3DownloadFailed` errors. The team has verified that the S3 bucket exists and the IAM role has `s3:GetObject` permissions. The dataset is 1 TB and consists of many small files. Which of the following is the most likely cause and solution?
Select an answer first
14foundation · easy
For an ML workload that requires low-latency access to a small dataset (e.g., a few GB) that is frequently read and updated by a single EC2 instance, which storage option is the most cost-effective and performant choice?
Select an answer first
15foundation · easy
Which data format is columnar, optimized for analytical queries, and commonly used with AWS analytics services like Amazon Athena and Amazon Redshift Spectrum?
Select an answer first

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Task 1.1: Ingest and Store Data MLA-C01 Practice Questions (Page 3)

Questions 11–15

Which AWS storage service is best suited for a relational database that requires transactional consistency and is accessed via SQL queries?

Which AWS storage service provides a fully managed, POSIX-compliant file system that can be mounted on multiple Amazon EC2 instances simultaneously for shared access to ML training data?

For an ML workload that requires low-latency access to a small dataset (e.g., a few GB) that is frequently read and updated by a single EC2 instance, which storage option is the most cost-effective and performant choice?

Which data format is columnar, optimized for analytical queries, and commonly used with AWS analytics services like Amazon Athena and Amazon Redshift Spectrum?

Keep studying — Content Domain 1: Data Preparation for Machine Learning (ML)