Practice Version Control in CS Thinking

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

A system that records changes to files over time so you can recall specific versions, compare changes, and collaborate without overwriting each other's work.

Version control is an unlimited undo button for your entire project โ€” plus the ability for multiple people to work on the same files simultaneously.

Example 1

easy
What is version control and why is it important? Describe what happens without it.

Example 2

medium
Explain these Git operations and their purpose: commit, branch, merge. How do they support team collaboration?

Example 3

medium
Two developers both edit the same line of the same file on different branches. What happens when they try to merge? How should this be resolved?

Example 4

hard
Explain how version control supports the maintenance stage of the SDLC. Describe a scenario where the ability to revert to a previous version saves a project.