Crucial Exams

Microsoft DevOps Engineer Expert AZ-400 Practice Question

Your team accidentally committed an Azure service principal JSON file that contains client secrets to an Azure Repos Git repository. The secret appears in multiple branches and tags. You must permanently remove every instance of the secret from the repository history and ensure that new clones cannot retrieve it. The solution should complete quickly on a repository that is several gigabytes in size and preserve all other history. What should you do?

  • Add the JSON file to the repository's .gitignore, commit the change, and push it to all branches.

  • Run BFG Repo-Cleaner with a text-replacement or file-deletion rule against the bare repository mirror, then force-push the rewritten history to origin.

  • Delete the branch that first introduced the secret and push the deletion to origin.

  • Revert the commit that added the JSON file on every branch and push the new commits to origin.

Microsoft DevOps Engineer Expert AZ-400
Design and implement a source control strategy
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