DVC (Data Version Control) basics in MLOps - Practice Problems & Coding Challenges

Challenge - 5 Problems

💻 Command Output

intermediate

What is the output of dvc init command?

You run dvc init in a new project folder. What output message do you expect to see?

MLOps

dvc init

A

Initialized DVC repository.

You can now track data files with 'dvc add'.

B Error: dvc command not found

C fatal: not a git repository (or any of the parent directories): .git

D Warning: DVC is already initialized in this directory

💡 Hint

Think about what happens when you start DVC in a fresh folder.

The dvc init command sets up DVC in your project by creating necessary config files and folders. It confirms initialization with a success message.

🧠 Conceptual

intermediate

What does dvc add do in a project?

Choose the best description of what dvc add data.csv does.

A It deletes <code>data.csv</code> from the project and replaces it with a link.

B It uploads <code>data.csv</code> to a remote cloud storage automatically.

C It tracks the file <code>data.csv</code> by creating a .dvc file and adding the file to DVC cache.

D It converts <code>data.csv</code> into a Git commit.

💡 Hint

Think about how DVC tracks large files without storing them directly in Git.

dvc add tracks data files by creating a small pointer file (.dvc) and storing the actual data in DVC cache. It does not upload files automatically or delete them.

🔀 Workflow

advanced

Order the steps to track a new data file with DVC and push it to remote storage

Put these commands in the correct order to track a file dataset.csv and push it to remote storage.

A 2,1,3,4

B 1,2,3,4

C 1,3,2,4

D 3,2,1,4

💡 Hint

Remember to add the .dvc file to Git before committing, then push data with DVC.

First, dvc add tracks the file and creates a .dvc file. Then you add the .dvc file and .gitignore to Git, commit the changes, and finally push the data to remote storage with dvc push.

❓ Troubleshoot

advanced

What error occurs if you run dvc push without configuring remote storage?

You run dvc push but forgot to set up remote storage with dvc remote add. What error message do you get?

MLOps

dvc push

A Warning: No data files to push

B fatal: not a git repository (or any of the parent directories): .git

C SyntaxError: invalid syntax

D ERROR: failed to push data to remote storage: no remote storage configured

💡 Hint

Think about what DVC needs before pushing data.

If no remote storage is configured, dvc push cannot upload data and shows an error about missing remote storage.

✅ Best Practice

expert

Which practice is best for managing large datasets with DVC in a team?

Choose the best practice to ensure smooth collaboration when using DVC to manage large datasets.

A Use <code>dvc add</code> to track data files, commit .dvc files to Git, and push data to a shared remote storage.

B Store data files only locally and do not track them with DVC.

C Avoid using remote storage and share data files manually via email or USB drives.

D Commit large data files directly to Git to keep everything in one place.

💡 Hint

Think about how DVC separates data tracking and storage for collaboration.

The best practice is to track data files with DVC, commit the small .dvc pointer files to Git, and push the actual data to a shared remote storage. This keeps Git lightweight and enables team collaboration.