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Tutor III 

Q. Which of these is a data type in Perl?

(A) Scalars
(B) Array
(C) Hashes
(D) All of these
Category: Perl

Explanation

Data types in Perl are:

    Scalar
    Array
    Hashes
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Q. Which of these is a type of the scalar in Perl?

(A) Array
(B) String
(C) Hash
(D) All of these
Category: Perl

Explanation

Scalar variables in Perl are a single unit of data. Different types of scalars in Perl are string, character, floating point, large group of string, webpage, etc.
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Q. The % sign in Perl is used to ___.

(A) Declare a hash
(B) Accessing a hash value
(C) Initialize a loop
(D) All of these
Category: Perl

Explanation

Hash in Perl are declared using the % sign.
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Q. The elements of the array are ___.

(A) Number
(B) String
(C) Characters
(D) All of these
Category: Perl

Explanation

The elements of the array can be number, string, characters, etc.
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Q. Array in Perl created using?

(A) %
(B) @
(C) $
(D) None of these
Category: Perl

Explanation

Array declaration in Perl is done using @.
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Q. Which is a valid way to extract the size of an array in Perl?

(A) _len(@array_name)
(B) @array_name.length()
(C) $size = scalar @array_name
(D) All of these
Category: Perl

Explanation

The valid way to extract the size of an array in Perl is:

    $size = scalar @array_name
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Q. What is a hash in Perl?

(A) Set of key-value pair
(B) Collection storing scalar
(C) Collection sorting array
(D) None of these
Category: Perl

Explanation

Hash in Perl is a set of key-value pairs.
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