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

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

How can you access a global variable inside a function if it has the same name as a local variable?

A). By using the window object

B). By using the global object

C). By using a different name for the global variable

D). By using the this keyword

What is the purpose of the global object in JavaScript?

A). To store local variables

B). To provide a namespace for global variables and functions

C). To define constants

D). To execute code in strict mode

Which of the following can create a global variable?

A). var

B). let

C). const

D). All of the above

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 happens if you declare a variable without var, let, or const inside a function?

A). It becomes a global variable

B). It becomes a local variable

C). It throws an error

D). It becomes a constant

Which of the following methods can help in avoiding global variables?

A). Using functions to encapsulate code

B). Using objects to namespace code

C). Using ES6 modules

D). All of the above

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

Which keyword is used to declare a variable in the global scope?

A). let

B). var

C). const

D). function

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