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In Java, what does the keyword ‘super’ refer to?
A. The superclass
B. The subclass
C. The current object
D. The package
Answer: The superclass
Which operator is used to raise a number to a power in Python?
A. ^
B. **
C. pow
D. &
Answer: **
Which of the following is the correct way to declare a constant variable in JavaScript?
A. const PI = 3.14;
B. let PI = 3.14;
C. var PI = 3.14;
D. constant PI = 3.14;
Answer: const PI = 3.14;
In Java, which method is used to convert a string to lowercase?
A. lower()
B. toLowerCase()
C. toLower()
D. downcase()
Answer: toLowerCase()
Which method is used to sort an array in JavaScript?
A. order()
B. sort()
C. arrange()
D. sequence()
Answer: sort()
What is the correct syntax for adding a comment in JavaScript?
A. /* This is a comment */
B. # This is a comment
C. // This is a comment
D. — This is a comment
Answer: // This is a comment
Which symbol is used to denote inheritance in Python?
A. :
B. ->
C. extends
D. ()
Answer: ()
Which of the following is used for database interactions in PHP?
A. MySQL
B. PDO
C. DBO
D. ORM
Answer: PDO
In Python, which of the following is used to check if a key exists in a dictionary?
A. in
B. exists
C. key()
D. find()
Answer: in