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MLS-C01 Modeling Practice Question

A team is using Amazon SageMaker to train a deep learning model for image classification. The training job is taking too long, and they want to reduce training time without sacrificing model accuracy. Which approach is most effective?

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

Use transfer learning with a pre-trained model and fine-tune on the target dataset

Transfer learning uses a pre-trained model that already has learned feature representations from a large dataset. Fine-tuning this model on the target dataset requires significantly less training time compared to training from scratch, while still achieving high accuracy. Option A is wrong because reducing batch size can slow down training and may cause convergence issues. Option B is wrong because reducing epochs can lead to underfitting and lower accuracy. Option C is wrong because reducing image resolution may remove important details, degrading model performance.

Answer analysis

Option-by-option breakdown

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

  • Reduce the batch size

    Why it's wrong here

    Smaller batch sizes can increase training time due to more updates and slower convergence.

  • Reduce the number of training epochs

    Why it's wrong here

    Reducing epochs may cause underfitting and reduce accuracy.

  • Reduce the image resolution

    Why it's wrong here

    Reducing resolution may lose important details, harming accuracy.

  • Use transfer learning with a pre-trained model and fine-tune on the target dataset

    Why this is correct

    Transfer learning uses features learned from a large dataset, allowing faster convergence and similar accuracy.

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Last reviewed: Jun 20, 2026

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