Describe one (1) scenario not mentioned in the textbook

I seek assistant with the following questions for my class.
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• Describe one (1) scenario not mentioned in the textbook in which the use of an array would be a plausible solution. Support your response with an example of the described use of the array.
• Describe one (1) scenario not mentioned in the textbook in which the use of parallel arrays would be a plausible solution. Support your response with an example of the described use of the array.
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• Discuss the manner in which you use the data hierarchy in either a Linux or Windows environment to organize your own files for the ease of locating them when needed.
• Identify a unique type of file in Windows or Linux with which you are familiar. Suggest the key factors that in your opinion make this a unique type of file.