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Computer Operating System Difficulty: Medium

Which class accepts a class name or an object reference and returns an array of interface name? What is the correct way to access the last element in an array named numbers in C#? What is the output of the given code? a = 5 b=10 while (a <10 || b<20)&&true puts a*b a+=2 b+=2 end Which library function is used to allocate memory dynamically in C? An application where only one user accesses the database at a given time is an example of a(n) ________ .