December
1998 QUESTION 4 Total Marks: 20 Marks |
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| (a) | Separation and isolation of processes is one
way in which a secure operating system can be designed. Describe three ways in
which processes can be separated from each other.
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[6] |
| (b) | Describe three physical
vulnerabilities of computer systems.
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[6] |
| (c) | Name four measures which might be
employed to improve the security of using a PC.
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[4] |
| (d) | (i) In terms of network security, what do you understand by the term traffic control? | [2] |
| (ii) Define the term pad traffic. | [2] |