to protect users from each other,3. to protect users from themselves,4. to protect it from itself, and5. to protect itself from its environment.
PTS: 1
2. What are the three security objectives of audit trails? Explain.
What will be an ideal response?
Audit trails support system security objectives in three ways. By detecting unauthorized access to the system, the audit trail protects the system from outsiders trying to breach system controls. By monitoring system performance, changes in the system may be detected. The audit trail can also contribute to reconstructing events such as system failures, security breaches, and processing errors. In addition, the ability to monitor user activity can support increased personal accountability.
PTS: 1
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Solve the system using a graphing calculator. 
A. 
B. 
C. 
D. Infinite number of solutions
E. No solution