December
1998 QUESTION 1 (Compulsory) Total Marks: 20 Marks |
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| (a) | Describe two common methods for
preventing attacks on computers, and in each case give one disadvantage of the
approach.
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[6] |
| (b) | List three security-related
functions which are performed by an operating system.
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[3] |
| (c) | Give one example of each of the following types of attack: | [3] |
| (i) Pest programs. | ||
| (ii) External masquerading. | ||
| (iii) External information theft.
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| (d) | Describe two benefits
associated with careful risk analysis.
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[4] |
| (e) | Describe two approaches to minimising disaster risk. | [4] |