#1
Which keyword is used to declare a constant in JavaScript?
#2
What is the purpose of the 'this' keyword in JavaScript?
To refer to the current class instance
To refer to the parent class instance
To refer to the global object
To refer to a specific DOM element
#3
Which of the following is a valid way to comment out multiple lines in Python?
// This is a comment
# This is a comment
/* This is a comment */
#4
In JavaScript, what is the purpose of the 'setTimeout' function?
To define a timeout period for a function
To delay the execution of a function
To repeat a function at regular intervals
To set a timer for the entire script
#5
What is the purpose of the '===' operator in JavaScript?
Value equality without type coercion
Value equality with type coercion
Reference equality
Logical equality
#6
What does the '==='' operator check for in JavaScript?
Value equality without type coercion
Value equality with type coercion
Reference equality
Logical equality
#7
In Python, what is the purpose of the 'pass' statement?
To exit the loop
To skip the current iteration in a loop
To indicate an empty block of code
To break out of a function
#8
In Python, what does the 'yield' keyword do?
Terminates the current loop iteration
Returns a value from a function and saves its state
Defines a new variable
Imports a module
#9
What is the purpose of the 'extends' keyword in Java?
To implement an interface
To create a subclass
To override a method
To define a constant
#10
What is the purpose of the 'NaN' (Not a Number) value in JavaScript?
To represent an undefined variable
To indicate a numerical error or undefined result
To check for a null value
To represent infinity
#11
What is the purpose of the 'super()' function in Python?
To call a method from the superclass
To initialize the superclass
To create an instance of the superclass
To access the superclass attributes
#12
In Java, what is the 'volatile' keyword used for?
To declare a variable constant
To indicate that a variable may be changed by multiple threads
To specify the visibility of a variable
To create a synchronized block
#13
Which of the following is not a valid variable name in Python?
_variable_name
123variable
VarName
my-variable
#14
What does the acronym SQL stand for?
Structured Query Language
Sequential Query Logic
Standardized Question Language
Systematic Query Log
#15
What is the purpose of the 'self' keyword in Python?
To refer to the current instance of a class
To create a new instance of a class
To access a class attribute
To define a class method