Which data type represents variables that have been explicitly set to have no value?

How is the Undefined data type different from the Null data type in JavaScript?

A). Undefined represents an intentional absence of value

B). Null represents variables not initialized

C). Undefined is used for object keys

D). Null is used for mathematical operations

What is the purpose of the Null data type in JavaScript?

A). To represent numeric values

B). To represent an intentional absence of value

C). To represent textual data

D). To represent logical values

Which of the following statements accurately describes the Boolean data type in JavaScript?

A). It represents textual data

B). It represents numeric data

C). It represents logical values

D). It represents an absence of value

What is the result of the expression typeof undefined in JavaScript?

A). number

B). string

C). undefined

D). boolean

What does the expression typeof null return in JavaScript?

A). number

B). string

C). object

D). boolean

What does the Boolean data type represent in JavaScript?

A). Textual data

B). Numeric data

C). Logical values

D). Absence of value

Which primitive data type represents unique identifiers introduced in ECMAScript 6?

A). Number

B). Symbol

C). Boolean

D). Undefined

What is the result of the expression typeof 'Hello' in JavaScript?

A). number

B). string

C). undefined

D). boolean

What does the expression typeof true return in JavaScript?

A). number

B). string

C). boolean

D). undefined

Which primitive data type represents variables that are declared but not initialized?

A). Number

B). String

C). Undefined

D). Null