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What is the main difference between a `list` and a `tuple` in Python?
A. Tuples are immutable
B. Lists cannot contain duplicate values
C. Tuples use less memory
D. Lists are faster than tuples
Answer: Tuples are immutable
What is the default access modifier for a class in Java?
A. public
B. private
C. protected
D. package-private
Answer: package-private
In JavaScript, how do you create a function?
A. function myFunction() {}
B. def myFunction() {}
C. create function myFunction() {}
D. function:myFunction()
Answer: function myFunction() {}
In Python, what does the `pass` statement do?
A. Exits a loop
B. Does nothing
C. Returns a value
D. Breaks out of a function
Answer: Does nothing
What is the correct syntax for writing a comment in C?
A. // This is a comment
B. /* This is a comment */
C. # This is a comment
D. Both a and b
Answer: Both a and b
In C++, what does `virtual` keyword specify in a class?
A. A method that can be overridden
B. A method that is final
C. A class that is immutable
D. A reference to another object
Answer: A method that can be overridden
Which method is used to find the length of a string in JavaScript?
A. size()
B. getLength()
C. length()
D. strlen()
Answer: length()
What is the purpose of the `super` keyword in Java?
A. To call a parent class constructor
B. To access private methods
C. To create a new class
D. To declare a static method
Answer: To call a parent class constructor
Which operator is used to assign a value to a variable in Java?
A. =
B. :=
C. ==
D. ++
Answer: =