File Input Output in Ruby MCQ question and answer with solution

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Current Affairs Interview Blog

What is the purpose of the File.exist? method in Ruby?

A) To check if the specified file is empty B) To check if the specified file is readable C) To check if the specified file is writable D) To check if the specified file exists

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Answer & Solution

Answer: Option D

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Which method in Ruby is used to set the position of the file pointer?

A) seek() B) position() C) set_pointer() D) pointer_position()

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Answer & Solution

Answer: Option A

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What does the File.rename() method in Ruby do?

A) Creates a file B) Deletes a file C) Copies a file D) Renames a file

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Answer & Solution

Answer: Option D

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How do you read the entire contents of a file into a string in Ruby?

A) file.gets() B) file.readlines() C) file.read() D) file.each_line()

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Answer & Solution

Answer: Option C

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Which method in Ruby is used to delete a file?

A) File.erase() B) File.delete() C) File.clear() D) None of the above

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Answer & Solution

Answer: Option B

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What is the purpose of the File.size method in Ruby?

A) To determine the number of characters in a file B) To determine the last modification time of a file C) To determine the size of a file in bytes D) To determine the number of lines in a file

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Answer & Solution

Answer: Option C

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What is the result of using File.open() with the block syntax in Ruby?

A) The file remains open after the block is executed B) The file is opened in write mode C) The file is opened in read mode D) The file is automatically closed at the end of the block

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Answer & Solution

Answer: Option D

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What does the 'w' file mode in Ruby signify?

A) Opens a file for writing, truncating it if it exists B) Opens a file for reading and writing, creating it if it does not exist C) Opens a file for reading, creating it if it does not exist D) Opens a file for appending, creating it if it does not exist

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Answer & Solution

Answer: Option A

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How do you check if a file in Ruby is readable?

A) File.writable("filename.txt") B) File.readable("filename.txt") C) File.writable?("filename.txt") D) File.readable?("filename.txt")

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Answer & Solution

Answer: Option D

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What method is used to check if a file is writable in Ruby?

A) File.writable?("filename", "w") B) File.writable?("filename", "r") C) File.writable?("filename") D) File.writable?("filename", "rw")

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Answer & Solution

Answer: Option C

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File Input Output in Ruby MCQ question and answer with solution | Ruby Programming MCQs