Can a global variable be accessed inside a function?

What keyword is used to ensure a variable is block-scoped?

A). var

B). global

C). let

D). window

What is the output of typeof window in a browser environment?

A). object

B). undefined

C). function

D). global

In Node.js, what is the global object called?

A). window

B). global

C). document

D). process

How do you declare a global variable inside a function?

A). Using var

B). Using let

C). Using const

D). Assigning to window

Can global variables lead to name collisions in large codebases?

A). Yes

B). No

C). Only if not managed properly

D). Only in strict mode

What is the output of console.log(window.globalLet); if let globalLet = 'Hello'; is declared in the global scope?

A). Hello

B). undefined

C). error

D). null

How can you avoid global scope pollution?

A). By using local variables

B). By using IIFE (Immediately Invoked Function Expressions)

C). By using modules

D). All of the above

Which of the following can be used to prevent accidental modification of global variables?

A). Encapsulation

B). Namespace

C). Strict mode

D). Block scoping

What is the output of console.log(globalThis === window); in a browser environment?

A). 1

B). 0

C). undefined

D). null

Which statement is true about global variables in JavaScript?

A). They are not accessible inside functions

B). They can be accessed and modified from any part of the code

C). They are constants

D). They can only be read, not modified