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a. Outline the six steps of risk management in the correct order. (6 Marks) b. Briefly describe the following control mechanisms in the correct order. (6 Marks) i. Administrative controls ii. Logical controls iii. Physical controls c. While giving examples, give three types of information that can be used for authentication. (3 Marks) d. List any three practical applications of public key cryptography. (3 Marks) e. Differentiate between identification and authorization as used in computer security. (2 Marks) f. Briefly describe the role of diffusion and confusion in data encryption algorithms. (4 Marks) g. List two problems associated with password security. (4 Marks) h. What is a certificate authority? (CA) (2 Marks)
QUESTION TWO – 20 MARKS
a. Briefly describe what is involved in the following in relation to computer systems security. (8 Marks) i. Integrity ii. Availability iii. Authentication iv. Non-repudiation b. Briefly explain the operation of challenge authentication protocol (CHAP). Give one weakness with this protocol. (8 Marks) c. Differentiate between reactive password checking and proactive password checking. (4 Marks)

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