Question 26

Question

Question 26

BlackTom AI · Accepted Answer

Version control systems (VCS) record and manage changes to source code over time, so they are used primarily to track revisions and support team collaboration.

1) Relevant knowledge points and concepts
- A VCS (e.g., Git, Subversion) stores a history of changes (commits), authorship metadata, timestamps, and diffs.
- Branching and merging let multiple developers work concurrently and integrate work.
- Reverting and checking out previous revisions enable undoing mistakes and auditing.
- Access controls and remote repositories support distributed collaboration.

2) Step‑by‑step reasoning
- When a developer saves work to a VCS, the system creates a commit representing a snapshot of the code at that moment.
- Each commit includes who made the change and why (commit message). This builds a timeline of changes.
- Branches allow independent lines of development; merges combine them, with conflict resolution when needed.
- Remote repositories let team members push and pull changes, keeping everyone synchronized.
- The history and metadata make it possible to identify when a bug was introduced, revert to known-good states, and review contributions—core collaboration features.

3) Calculations / intermediate steps
- No numeric calculations are required; the logical steps above show how commits → history → collaboration function.

4) Why the correct answer is correct
- Option c, "To track changes to code over time and support collaboration," directly states the primary purpose and capabilities of version control systems: historical tracking and enabling multiple people to work together safely.

5) Why the other options are incorrect
- a. Improving visual appearance of the UI is a design/development goal, not a function of VCS.
- b. Automatically finding and fixing bugs describes static analysis or automated bug-fix tools, not version control.
- d. Converting design documents directly into working software refers to code-generation or model-driven engineering, not VCS functionality.

Conclusion: The correct answer is c. To track changes to code over time and support collaboration. This matches the provided answer.

Question 26单项选择题

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