Mastering Fundamentals

Shree is learning JavaScript and wants to know the correct way to declare a variable in her code.

• let variableName; or const variableName; or var variableName;

• declare variableName as variable;

• variableName = new Variable();

• int variableName;

Aarush wants to check if his score in the exam is equal to the passing score. How does he use an if statement to check this?

• if (score = passingScore) { // code }

• if (passingScore == score) { // code }

• if (score != passingScore) { // code }

• Use 'if (score == passingScore) { // code }' to check equality.

Sanya is starting a new project and wants to keep track of her code changes. What is the purpose of the 'git init' command?

• To initialize a new Git repository.

• To delete an existing Git repository.

• To stage changes for commit.

• To clone a remote Git repository.

Sanya is working on a project and has made several changes to her files. How does she stage these changes in Git before committing?

• Run 'git push' to stage changes.

• Execute 'git merge ' to stage changes.

• Use 'git add ' or 'git add .' to stage changes.

• Use 'git commit ' to stage changes.

Sanya is working on a project using Git and wants to check the current status of her repository. What command should she use?

• git view

• git info

• git status

• git check

During a group project, Kabir made several changes to the codebase. What is the function of 'git commit' in this context?

• To save changes to the local repository with a message.

• To create a new branch in the repository.

• To delete files from the local repository.

• To merge changes from a remote repository.

Tara is learning Git for her software development class. She wants to see the history of all the commits she has made in her project. How can she view the commit history in Git?

• Run 'git show' to display commit details.

• Execute 'git status' to check commit changes.

• Use 'git log' to view the commit history in Git.

• Use 'git history' to see past commits.

Aarav wants to work on a project that his friend Shreya has been developing. To get started, he needs to download the entire project repository from Shreya's remote Git repository to his local machine. What command should he use?

• It updates a remote Git repository.

• It initializes a new Git repository.

• It copies a remote Git repository to your local machine.

• It deletes a local Git repository.

Alisha is learning JavaScript and wants to define a function to calculate the area of a rectangle. How does she define a function?

• function: myFunction() { // function body }

• myFunction() { // function body }

• define myFunction() => { // function body }

• function myFunction() { // function body }

What is the difference between 'let' and 'var' in JavaScript?

• 'let' is block-scoped; 'var' is function/global-scoped.

• 'let' is used for constants; 'var' is used for variables.

• 'let' can be redeclared; 'var' cannot.

• 'let' is function-scoped; 'var' is block-scoped.