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In Java, which keyword is used to prevent inheritance?
A. final
B. sealed
C. prevent
D. static
Answer: final
In JavaScript, how can you create an array?
A. var arr = [];
B. var arr = new Array();
C. Both a and b
D. None of the above
Answer: Both a and b
In Python, what is the output of `len(‘hello’)`?
A. 4
B. 5
C. 6
D. None
Answer: 5
In C++, how do you declare a reference variable?
A. int& ref = var;
B. int ref = &var;
C. int ref var = &var;
D. ref var = ∫
Answer: int& ref = var;
Which keyword is used to terminate a loop in C?
A. exit
B. stop
C. break
D. terminate
Answer: break
In Java, how is a new object created?
A. new Object()
B. Object obj = new Object();
C. Object obj = Object();
D. create Object()
Answer: Object obj = new Object();
What is the extension of a Python file?
A. .py
B. .java
C. .js
D. .cpp
Answer: .py
Which language is primarily used for styling web pages?
A. HTML
B. CSS
C. JavaScript
D. PHP
Answer: CSS
In C++, which keyword is used to define a constant variable?
A. const
B. constant
C. immutable
D. static
Answer: const