Give an example of a circumstance when a user's total denial of a service—that is, the user receives no answer from the computer—is a serious issue. Describe a different scenario in which a 10% denial of service (i.e., the user's computation happens 10% slower than usual) causes significant issues. Is it feasible that unauthorised access to a computer system might prevent legitimate users from receiving 10% of their services? If that's true, how would you go about doing that?

Q: Give an example of a time when a user's complete denial of a service (when the user gets no response…

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A: The answer is

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Recurrence relation

A recurrence relation or recursive relation is an equation that represents a function in terms of the values of its smaller inputs. Every recurrence relation T(n) is a recursive function of integer n and consists of a base case and a recursive case.