CSE 3901 MIDTERM QUESTION SET WITH RATIONALES AND OBJECT-ORIENTED PROGRAMMING AND GIT OPERATIONS REVIEW 2026

CSE 3901 MIDTERM QUESTION SET WITH
RATIONALES AND OBJECT-ORIENTED
PROGRAMMING AND GIT OPERATIONS
REVIEW 2026

◉ Git Working Tree.
Answer: project itself


Ordinary directory with files & subdirectories


◉ Git Store.
Answer: history of project


◉ Git Index.
Answer: virtual snapshot


Gateway for moving changes in the working tree into the store


◉ Git History.
Answer: DAG of commits

,Each commit represents a complete snapshot of the entire project


◉ Git Revision.
Answer: Just the manual editing of the file


◉ Git Commit.
Answer: updates head and branch (permanent)


identified by a hash


◉ Git Branch.
Answer: a pointer to a commit


◉ how to add git branch.
Answer: git branch branchname
git checkout branchname


◉ how to change git branch.
Answer: git checkout branchname


◉ Git Head.
Answer: a pointer to a branch

,(where you're at)


◉ Git Add.
Answer: adds the submission


◉ how to add (all steps).
Answer: git add name.rb
git commit -m "comment"
git push remote_name branch_name


◉ Git Checkout.
Answer: moves head to look at another branch


◉ Git Merge.
Answer: brings two together, adds new commit


◉ Git Fast-Forward Merge.
Answer: bring old into new head


◉ Git Fetch.
Answer: bring in commits that given user lacks

, ◉ Git Push.
Answer: opposite to fetch. Give someone a change


◉ Git Pull.
Answer: combines fetch and merge


◉ Git No Conflict Merge.
Answer: Automatically commits


◉ Distributed version control.
Answer: Multiple people, distributed across network


- each person has their own repository
- units of data movement: changesets


◉ Number of repositories per team.
Answer: n+1.
1 shared, 1 local for each


◉ Discard Changes in Git : reset.
Answer: git reset --hard
git clean --dry-run