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a) What is an authentication? (2 marks) b) Describe how user profile-based authentication mechanism is implemented. Give TWO (2) examples. (4 marks) c) Memory and

a) What is an authentication? (2 marks)

b) Describe how user profile-based authentication mechanism is implemented. Give TWO (2) examples. (4 marks)

c) Memory and CPU protection are very important in a multiprogramming environment. Discuss the security protection for CPU and memory. (4 marks)

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