Question 11 : Which function is used for handling substitutions in perl?
1. tr
2. s
3. str
4. tr and s
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Question 12 : If a variable is undefined, its value is ____
1. 0
2. 1
3. NULL
4. garbage
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Question 13 : When a string is used for numeral computations, perl converts it into ___
1. character
2. floating point number
3. number
4. boolean value
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Question 14 : perl variables have no type and no initialization.
1. True
2. False
3.
4.
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Question 15 : ___ function is used for removing the last character from the line.
1. cut
2. chop
3. erase
4. split
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Question 16 : It is often more convenient to save perl program files with ____ extension.
1. .gp
2. .sh
3. .awk
4. .pl
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Question 17 : A perl program runs in a special interpretive mode.
1. True
2. False
3.
4.
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Question 18 : awk makes a distinction between numeric and string variables.
1. True
2. False
3.
4.
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Question 19 : The _____ function extracts a substring from a string.
1. length
2. index
3. size
4. substr
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Question 20 : Which of the following is a built-in function for awk?
1. length
2. index
3. size
4. length and index
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