Javascript

1. What keyword declares a globally-scoped variable in JavaScript?

• let

• const

• var

• static

What is the scope of a variable declared with let?

• Global
  

• Function

• Block

• Static

Which data type is not a primitive type in JavaScript?

• Boolean

• Array

• String

• Undefined

What will happen if you try to reassign a const variable?

• t gets reassigned

• Returns undefined

• Nothing happens

• Throws an error

Which operator is used for strict equality?

• ==

• ===

• =

• !=

What is the output of console.log(10 % 3);?

• 0
• 1

• 2
• 3

Which logical operator returns true if at least one operand is true?

• A) &&
  

• B) ||

• 
  C) !
  

• D) ==

What is the result of console.log(!false);?

• A) false
  

• B) 0
  

• C) true
  

• D) undefined

What does the following code return: if(score > 90) { ... } if score = 85?

• A) Executes if block
  

• B) Executes else block
  

• C) Executes else if block

• 
  D) Syntax error

Which loop type is best when the number of iterations is known?

• A) while
  

• B) if
  

• C) switch
  

• D) for