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Version Control Week 01 Quiz Answers

Quiz 1: Module 1 Assessment

Q1. Which one of these statements about Git is true?

• Each version of the project is called a branch.
• Git helps manage the history of the project.
• A commit containing one small change to a project is not practical.

Q2. Which one of these statements about branches is true?

• The default branch is named “master”.
• A branch contains a small part of the project.
• By default, a commit does not belong to a branch.

Q3. What is a request to merge your branch into another branch called?

• Code review
• Automated test
• Pull request

Q4. If a remote repository is offline, which one of the following is true?

• You can continue to work, but only with the current version of the project.
• You must wait for the remote repository to become available.
• You can continue to work with the local repository.

Q5. Which one of the following is true?

• Git implements distributed version control.
• Git does not scale to large projects.
• Git is owned by a single company.

Q6. Which one of these statements about commits is true?

• A commit is a snapshot of the project.
• A commit contains only the changes to the project since the previous commit.
• Only the most recent commit is saved in the repository.

Q7. Which location contains the list of files that will be included in the next commit?

• Staging area
• Working tree
• Remote repository
• Branch

Q8. Which location contains the commit history of a project?

• Branch
• Staging area
• Remote repository
• Working tree

Q9. When a file is first placed in the working tree, what is its status?

• Modified
• Untracked
• Committed
• Staged

Q10. What must you do to add a new file to the next commit?

• Check out the file.
• Add the file to the staging area.
• Push the file.
• Tag the file.

Q11. If you create a local repository in a folder with existing files, what will be the status of the files?

• Untracked
• Staged
• Modified
• Committed

Q12. Immediately after you commit, where is the commit located?

• Neither repository
• Remote repository
• Local repository
• Local repository and remote repository

Q13. Which one of these statements about remote repositories is true?

• You must have one remote repository for each local repository.
• A remote repository usually has a staging area.
• By convention, remote repository names end in “.git”.
• A remote repository usually has a working tree.

Q14. What is a local copy of a remote repository called?

• Origin
• Branch
• Clone
• Master

Q15. After you clone a repository, which one of the following is true?

• The remote repository information is available in the local repository.
• New commits to the local repository will automatically be pushed to the remote repository.
• Only the most recent commit is available locally.
• New commits on the remote repository will automatically be added to the local repository.

Q16. What is origin?

• An alias for the remote repository’s URL.
• The default branch name.
• The first version of a file in the repository.
• The first commit of the repository.

Q17. What must you do to add a local commit to the remote repository?

• Push
• Pull
• Merge
• Stage

Version Control Week 02 Quiz Answers

Quiz 1: Module 2 Assessment

Q1. In Git, what is modeled as a directed acyclic graph?

• The working tree.
• The commit history.
• The staging area.

Q2. How are Git commits connected?

• A commit object contains the SHA-1 of its child or children.
• The staging area lists the connections.
• A commit references its parent(s).

Q3. What is a Git ID?

• The name of a Git object.
• The user’s name and email address.
• The ID of the local repository.

Q4. If a large file changes by one character, what would you expect to happen to its corresponding SHA-1 value?

• It would change drastically.
• It would slightly change.
• It would not change.

Q5. What do branch labels point to?

• The initial commit of a branch.
• Every commit of a branch.
• The most recent commit of a branch.

Q6. How many HEAD references are in a local repository?

• One.
• One for each branch label.
• One for each commit.

Q7. Which one of these statements is correct?

• A tag always points to a specific commit.
• The HEAD reference always points to a tag.
• A tag is another name for a branch label.

Q8. What happens when a branch is created?

• The HEAD reference changes.
• A branch label is created.
• Commits are copied.

Q9. Which one of these statements is correct?

• Checkout prevents others from changing a branch.
• Checkout retrieves content from the remote repository.
• Checkout updates the working tree and HEAD reference.

Q10. What does a detached HEAD mean?

• The HEAD reference points directly to a commit SHA-1.
• The HEAD reference points to a branch label.
• The HEAD reference does not point to anything.

Q11. What does “deleting a branch” immediately do?

• Deletes all of the commits of the branch.
• Deletes a branch label.
• Deletes only the commits that are unique to the branch.

Q12. Which one of the following statements is true?

• A merge always creates a new commit.
• A commit can only belong to one branch at a time.
• Merging combines the work of branches.

Q13. Which one of the following statements about fast-forward merges is true?

• The merge moves a branch label.
• The merge may change some commits.
• The merge may result in a merge conflict.

Q14. If Git informs you that a fast-forward merge is not possible, which one of these statements is most likely to be true?

• A commit was made on the base branch after the topic branch was created.
• The checked out commit has multiple parents.
• The merge has merge conflicts that must be resolved first.

Q15. Which one of these statements about a merge involving a merge commit is true?

• A merge commit results in a linear commit history.
• The merge is aborted if there are merge conflicts.
• Git places the result of the merge into a new commit.

Version Control Week 03 Quiz Answers

Quiz 1: Module 3 Assessment

Q1. Which one of the following statements about merge conflicts is true?

• Merge conflicts can not occur in Git.
• Merge conflicts can be fast-forward merged.
• Merge conflicts occur when a person needs to make a decision.

Q2. Assume that you have a topic branch merging into a base branch. Which one of the following is involved in resolving a merge conflict?

• Checking out the topic branch.
• Adding file(s) to the staging area.
• Pushing to the remote repository.

Q3. Assume that you have a topic branch merging into a base branch. Which one of these situations is most likely to create a merge conflict?

• In README.md, the topic branch modifies the header and the base branch modifies the footer.
• Both branches update the header in README.md.
• The topic branch modifies fileA.txt. The base branch modifies README.md.

Q4. Which one of the following statements is true?

• A tracking branch label sometimes points to the same SHA-1 as the remote branch label.
• A tracking branch label always points to the same SHA-1 as the remote branch label.
• A tracking branch label never points to the same SHA-1 as the remote branch label.

Q5. Which one of the following is most likely to have tracking branches?

• A remote repository.
• The staging area.
• A local repository.

Q6. Immediately after you clone a repository, which one of these statements is most likely to be true?

• The tracking branch label and local branch label point to the same commit.
• There are no tracking branches.
• The local branch tip will be ahead of the tracking branch tip.

Q7. If you perform a fetch and new objects are retrieved, which one of these is most likely to be true?

• The local branch and tracking branch will contain the exact same commits.
• The tracking branch label will point to a new commit.
• The local branch label and tracking branch label will point to the same commit.

Q8. Which one of these statements is true?

• Pull does not update the local branch tip.
• Fetch does not update the local branch tip.
• Fetch may result in a merge conflict.

Q9. Which one of these statements is true?

• Pull combines fetch and push.
• Pull combines fetch and merge.
• Push combines fetch and merge.

Q10. A pull may result in which one of the following?

• A merge commit on the remote repository.
• A fast-forward merge.
• A new checked-out branch.

Q11. When should you avoid rebasing a branch?

• If you have shared the branch.
• If a merge conflict occurs.
• Always.

Q12. Which one of the following statements is true?

• A rebase never results in a merge conflict.
• A rebase may result in a merge conflict.
• A rebase always results in a merge conflict.

Q13. Which one of the following statements is true?

• A rebase may rewrite the commit history.
• A rebase always rewrites the commit history.
• A rebase never rewrites the commit history.

Q14. Which one of the following statements is true?

• Rebasing a topic branch involves checking out the base branch.
• A rebase always creates a merge commit.
• A rebase may result in a merge conflict.

Q15. Which one of the following statements is true?

• An interactive rebase may involve a single branch.
• An interactive rebase must involve two or more branches.
• An interactive rebase never removes existing commits.

Version Control Week 04 Quiz Answers

Quiz 1: Module 4 Assessment

Q1. Which one of these is the main goal of a pull request?

• Obtain a clone of a repository.
• Create a branch.
• Merge a branch into a project.

Q2. Which one of these statements is true?

• A pull request can be made only when a branch is being merged.
• A pull request can act as a form of review and approval.
• A pull request must be made from a forked repository.

Q3. Which one of these statements is true?

• A pull request merge can not be fast-forwarded.
• Merging a pull request may result in a merge conflict.
• Merging a pull request always creates a merge commit.

Q4. Which one of these statements is true?

• A pull request must include a forked repository.
• Pull requests can not be modified.
• Pull requests can facilitate team discussion.

Q5. When can you open a pull request?

• When you want feedback on your work.
• Only when the branch is ready to be merged.
• Only when the branch is created.

Q6. Which one of these is true about squash merges?

• A squash merge creates a merge commit.
• A squash merge can result in deleted commits.
• A squash merge can not be done when merging a pull request.

Q7. Which one of these statements is true?

• A fork is a remote repository.
• A fork is an upstream repository.
• A fork is considered the source of truth.

Q8. Which one of the statements about forks is true?

• The upstream repository may have access to the fork.
• The upstream repository never has access to the fork.
• The upstream repository always has access to the fork.

Q9. After forking a repository, which one of these statements is true?

• The commit histories of the two repositories may begin to differ.
• The two repositories will automatically remain synchronized.
• The two repositories can not be synchronized.

Q10. Which one of these statements is true?

• Cloning a forked repository creates a local repository.
• There is no reason to clone a forked repository.
• A fork and a clone are the same thing.

Q11. Assume that you have a forked repository and an upstream repository. Who selects the merge strategy if a pull request is merged?

• The person merging the pull request.
• The requester.
• The creator of the topic branch.

Q12. Which one of these statements about centralized workflows is true?

• Using a centralized workflow is discouraged.
• There is usually a single branch on the remote repository.
• Pull requests are common in centralized workflows.

Q13. Which one of these statements about feature branch workflows is true?

• Pull requests are not possible in feature branch workflows.
• Most work is done on a feature branch.
• Using a feature branch workflow is discouraged.

Q14. Which one of these statements about forking workflows is true?

• A forking workflow involves multiple remote repositories.
• The forked repository must have write access to the upstream repository.
• Using a forking workflow is discouraged.

Q15. Which one of these statements about Gitflow workflows is true?

• Gitflow workflows can accommodate hotfixes.
• Gitflow workflows contain no long-running branches.
• Gitflow workflows work best with small projects.

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