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Question 5 (a) Name and describe 4 of the 10 design guidelines for secure systems engineering....

Question 5
(a) Name and describe 4 of the 10 design guidelines for secure systems engineering.
[8 marks]
(b) Briefly describe three reasons for maintaining a system.
[3 marks]
(c) i. Explain what is meant by refactoring code?
[2 marks]
ii. Explain why refactoring code is considered as preventive maintenance?
[3 marks]

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Answer #1

A) Design guidelines for Secure systems engineering

1.Avoid a single point of failure-ensure that single failure is not happend in application .for example, have password and question based authentication

2.log user actions- try to keep log of user actions that's who did it can can track.

3.design for deployment-deployment-design the system to avoid deployment.

4.design for recoverabilityrecoverability-design the system to simplify simplify recoverability after successful attack.

b) 1.interception

2.interruption

3.modification

4.fabrication

') refactoring code is improving code without creating new functionality that can transform into clean code and simple design. It will make more efficient and maintainable.

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