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Perl Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Perl. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - Which of the following data types are preceded by a dollar sign ($) in Perl?
Answer : A
Explanation
Scalars are preceded by a dollar sign ($).
Q 2 - Which of the following special variable represents current package name?
Answer : A
Explanation
_PACKAGE_ -represents current package name.
Q 3 - Which of the following method prepends list to the front of the array, and returns the number of elements in the new array?
Answer : D
Explanation
unshift @ARRAY, LIST - Prepends list to the front of the array, and returns the number of elements in the new array.
Q 4 - How will you delete a key/value pair to a hash?
Answer : B
Explanation
To remove an element from the hash you need to use delete function.
Q 5 - Which of the following operator checks if the value of two operands are equal or not, if values are not equal then condition becomes true?
Answer : B
Explanation
!= − Checks if the value of two operands are equal or not, if values are not equal then condition becomes true.
Q 6 - Which of the following operator returns true if the left argument is stringwise greater than the right argument?
Answer : B
Explanation
gt − Returns true if the left argument is stringwise greater than the right argument.
Answer : A
Explanation
-- − Auto Decrement operator decreases integer value by one.
Q 8 - Which of the following is true about my operator?
B - Outside confined region , my variable cannot be used or accessed.
Answer : C
Explanation
The my operator confines a variable to a particular region of code in which it can be used and accessed. Outside that region, this variable cannot be used or accessed.
Q 9 - Which of the following is true about lexical scoping?
Answer : D
Explanation
All of the above options are correct.
Q 10 - Which of the following code create a reference for a array?
Answer : B
Explanation
You can create a reference for any array by prefixing it with a backslash as follows - $ref = \@ARGV;