6.7 Systems Reliability

Question 1

(5) Principles of Systems Reliability

The trust services criteria

Answer 1

1. Develop Policy:
   before design & implementation, take inventory
2. Effective Communication:
   communicated & understood
3. Appropriate Control Procedures:
   Tools like COBIT, to mitigate security threats
4. Monitor & remedial Action:
   Continuous cycle of developing policies, communicating them, implementing specific controls, monitoring performance, taking corrective action

Question 2

Reliable Systems:

Answer 2

1. Protects confidential information (encryption & VPN)
2. Privacy (focused on protecting personal info)
3. Produces info that is:
   - Accurate
   - Timely
   - Authorized

Question 3

(4) Categories of Integrity Controls:

Answer 3

1. Source Data Controls:
   all source docs are authorized, validated, accurate, complete, properly accounted for, entered into the system in a timely manner
2. Data Entry Controls:
   validate input by checking to ensure data is entered correctly
3. Processing Controls:
   Ensure data is processed correctly using labels, recalculating totals, reduce data transmission errors
4. Output Controls:
   User reviews by reconciling accounts