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 undefined 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 have been explicitly set to represent no value?
A). Number
B). String
C). Undefined
D). Null
Which data type represents variables that have been explicitly set to have no value?
A). Number
B). Undefined
C). String
D). Null
What does the expression typeof Symbol() return in JavaScript?
A). number
B). string
C). symbol
D). boolean
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 does the Boolean data type represent in JavaScript?
A). Textual data
B). Numeric data
C). Logical values
D). Absence of value
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 primitive data type represents textual data?
A). Number
B). String
C). Boolean
D). Undefined