Which environment isolates untested code changes and experimentation from the production repository?

• A. Fuzzer
• B. Sandbox (Development Environment)
• C. Interactive Application Security Testing
• D. Standard Libraries

Answer: (B)

Isolating untested code changes from the production repository is achieved by using a sandbox or development environment. A sandbox provides a separate space where developers can safely experiment, build, and test new features without touching the production codebase or deployment. This separation lets you run realistic tests, try different configurations, and verify behavior before merging or releasing, reducing risk and making it easy to discard or revert experiments if something goes wrong. It’s different from a fuzzer, which automatically searches for input-based vulnerabilities; from Interactive Application Security Testing, which focuses on security testing within a live app; and from standard libraries, which are reusable code components and not an isolated testing environment.