Regular Expressions in Ruby MCQ question and answer with solution

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Which modifier is used to perform multiline matching in Ruby regular expressions?

A) m B) i C) x D) o

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Answer & Solution

Answer: Option A

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What does the \b anchor represent in a regular expression in Ruby?

A) Matches a non-word character B) Matches a non-word boundary C) Matches a word character D) Matches a word boundary

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Answer & Solution

Answer: Option D

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What is the purpose of the * quantifier in a regular expression in Ruby?

A) Matches one or more occurrences of the preceding character B) Matches one or zero occurrences of the preceding character C) Matches zero or more occurrences of the preceding character D) Matches exactly n occurrences of the preceding character

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Answer & Solution

Answer: Option C

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What does the \w character class represent in a regular expression in Ruby?

A) Matches any whitespace character B) Matches any word character C) Matches any digit character D) None of the above

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Answer & Solution

Answer: Option B

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Which method is used to extract all occurrences of a pattern in a string in Ruby?

A) String#scan B) String#extract C) String#find_all D) String#match_all

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Answer & Solution

Answer: Option A

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What does the $ anchor represent in a regular expression in Ruby?

A) Matches the start of a string B) Matches the end of a string C) Matches the start of a line D) Matches the end of a line

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Answer & Solution

Answer: Option D

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Which metacharacter is used to specify character ranges in a regular expression in Ruby?

A) () B) {} C) [] D) <>

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Answer & Solution

Answer: Option C

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Which modifier is used to perform global matching in Ruby regular expressions?

A) x B) g C) o D) None of the above

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Answer & Solution

Answer: Option B

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What does the \A anchor represent in a regular expression in Ruby?

A) Matches one or more occurrences of the previous character B) Matches any character except a newline C) Matches the start of a string D) Matches the end of a string

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Answer & Solution

Answer: Option C

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What is the purpose of the \G anchor in a regular expression in Ruby?

A) Matches the start of a string B) Matches the end of a string C) Matches any character except a newline D) Matches the point where the last match ended

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Answer & Solution

Answer: Option D

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Regular Expressions in Ruby MCQ question and answer with solution | Ruby Programming MCQs