CSE 3901 Midterm 1 Exam fully solved & updated 2026 (latest version
verified for accuracy) | Latest!!
Git Repository - (ANSWER)working tree + store + index
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
,CSE 3901 Midterm 1 Exam fully solved & updated 2026 (latest version
verified for accuracy) | Latest!!
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
,CSE 3901 Midterm 1 Exam fully solved & updated 2026 (latest version
verified for accuracy) | Latest!!
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
git clean --force
Discard Commit in Git : reset - (ANSWER)git reset --hard HEAD~1
Strongly Typed Language - (ANSWER)Classes determine valid operations
Interpreted Program - (ANSWER)Run a program directly, without compiling
pro:
platform independence
read-eval-print loop (REPL)
reflection
con:
speed
later error detection
, CSE 3901 Midterm 1 Exam fully solved & updated 2026 (latest version
verified for accuracy) | Latest!!
Dynamically typed - (ANSWER)objects have types, variables don't
Objects in Ruby? - (ANSWER)Everything
Fixnum Numbers in Ruby - (ANSWER)83, 0123, 0x53, 0b1010011, 0b101_0011
Float Numbers in Ruby - (ANSWER)123.45, 1.2345e2, 12345E-2
Rational Numbers in Ruby - (ANSWER)2/3r
Complex Numbers in Ruby - (ANSWER)4+3i
Strings Delimeters - (ANSWER)" " and ' '
String Interpolations inside " " - (ANSWER)#{ ... } --> allows executions inside string
Range inclusive - (ANSWER)0..4
Range end exclusive - (ANSWER)0...4
Single Line comment - (ANSWER)# start with hashtag/pound/octothorpe
Multi-line comment - (ANSWER)=being
words
words word
verified for accuracy) | Latest!!
Git Repository - (ANSWER)working tree + store + index
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
,CSE 3901 Midterm 1 Exam fully solved & updated 2026 (latest version
verified for accuracy) | Latest!!
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
,CSE 3901 Midterm 1 Exam fully solved & updated 2026 (latest version
verified for accuracy) | Latest!!
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
git clean --force
Discard Commit in Git : reset - (ANSWER)git reset --hard HEAD~1
Strongly Typed Language - (ANSWER)Classes determine valid operations
Interpreted Program - (ANSWER)Run a program directly, without compiling
pro:
platform independence
read-eval-print loop (REPL)
reflection
con:
speed
later error detection
, CSE 3901 Midterm 1 Exam fully solved & updated 2026 (latest version
verified for accuracy) | Latest!!
Dynamically typed - (ANSWER)objects have types, variables don't
Objects in Ruby? - (ANSWER)Everything
Fixnum Numbers in Ruby - (ANSWER)83, 0123, 0x53, 0b1010011, 0b101_0011
Float Numbers in Ruby - (ANSWER)123.45, 1.2345e2, 12345E-2
Rational Numbers in Ruby - (ANSWER)2/3r
Complex Numbers in Ruby - (ANSWER)4+3i
Strings Delimeters - (ANSWER)" " and ' '
String Interpolations inside " " - (ANSWER)#{ ... } --> allows executions inside string
Range inclusive - (ANSWER)0..4
Range end exclusive - (ANSWER)0...4
Single Line comment - (ANSWER)# start with hashtag/pound/octothorpe
Multi-line comment - (ANSWER)=being
words
words word
