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MLS-C01 Data Engineering Practice Question

Network Topology
aws glue get-job-runjob-name my-etl-jobrun-id jr_1234567Refer to the exhibit.```"JobRun": {"Id": "jr_1234567","Attempt": 0,"JobName": "my-etl-job","StartedOn": "2023-01-15T10:00:00Z","LastModifiedOn": "2023-01-15T10:05:00Z","CompletedOn": "2023-01-15T10:05:00Z","JobRunState": "FAILED","PredecessorRuns": [],"AllocatedCapacity": 5,"ExecutionTime": 300,"Timeout": 2880,"MaxCapacity": 5,"WorkerType": "Standard","NumberOfWorkers": 5,"LogGroupName": "/aws-glue/jobs/error"

An AWS Glue ETL job failed with the error 'Insufficient memory allocated for the job'. The job run details show AllocatedCapacity: 5, WorkerType: Standard, NumberOfWorkers: 5. Which change should be made to resolve the issue?

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

✓

Increase the number of workers to 10

The error indicates insufficient memory for the job. Both increasing the number of workers (Option C) and changing the worker type to G.2X (Option D) increase the total allocated memory. Option C scales out by adding more Standard workers, each with 16 GB memory and 1 DPU. Option D scales up by switching to G.2X workers, each with 32 GB memory and 2 DPUs, effectively doubling the DPU and total memory for the same number of workers. Either change can resolve the insufficient memory error. Option A is incorrect because deleting and recreating the job does not change resource allocation. Option B is incorrect because job timeout does not affect memory.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    Delete and recreate the job with a different name

    Why it's wrong here

    Deleting and recreating the job does not change the resource allocation; it will still have the same capacity.

  • ✗

    Increase the job timeout to 3600 minutes

    Why it's wrong here

    Job timeout does not affect memory allocation; it only controls the maximum run time.

  • ✓

    Increase the number of workers to 10

    Why this is correct

    Increasing the number of workers increases the total allocated memory and DPUs, resolving the insufficiency.

  • ✓

    Change the worker type to G.2X

    Why this is correct

    Changing the worker type to G.2X increases memory per worker but may not be necessary; the error is about total allocated capacity, which is increased by adding workers.

Visual reference

Client Recursive Resolver Root DNS (13 root servers) TLD DNS (.com, .org, …) Authoritative example.com query IP addr answer

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Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

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.