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 correctly describes Array data types in Perl?
A - These are simple variables. They are preceded by a dollar sign ($).
B - These are ordered lists of scalars that you access with a numeric index which starts with 0.
C - These are unordered sets of key/value pairs that you access using the keys as subscripts.
Answer : B
Explanation
Arrays are ordered lists of scalars that you access with a numeric index which starts with 0. They are preceded by an "at" sign (@).
Q 2 - Which of the following special variable represents current file name?
Answer : B
Explanation
_FILE_ -represents current file name.
Q 3 - Which of the following method pops off and returns the last value of the array?
Answer : B
Explanation
pop @ARRAY - Pops off and returns the last value of the array.
Q 4 - Which of the following statement terminates the loop statement and transfers execution to the statement immediately following the loop?
Answer : B
Explanation
last statement − Terminates the loop statement and transfers execution to the statement immediately following the loop.
Q 5 - Which of the following statement expects the expression to return a label name and then jumps to that labeled statement?
Answer : B
Explanation
goto EXPR − The goto EXPR form is just a generalization of goto LABEL. It expects the expression to return a label name and then jumps to that labeled statement.
Q 6 - Which of the following operator checks if the value of left operand is less than the value of right operand, if yes then condition becomes true?
Answer : A
Explanation
> − Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true.
Q 7 - Which of the following operator returns a list of values counting (up by ones) from the left value to the right value?
Answer : C
Explanation
.. − The range operator .. returns a list of values counting (up by ones) from the left value to the right value.
Q 8 - Parameters of a function can be acessed inside the function using the special array @_?
Answer : A
Explanation
Parameters can be acessed inside the function using the special array @_. Thus the first argument to the function is in $_[0], the second is in $_[1], and so on.
Q 9 - Which of the following function opens a file in read-only mode?
Answer : A
Explanation
open(DATA, "<file.txt"); − opens a file in read-only mode.
Q 10 - Which of the following function disassociate the filehandle from the corresponding file?
Answer : A
Explanation
close − To close a filehandle, and therefore disassociate the filehandle from the corresponding file, you use the close function. This flushes the filehandle's buffers and closes the system's file descriptor.
