12 Questions
What is the main purpose of implementing fault tolerance control in a system?
To ensure no single point of potential system failure exists
What is one of the technologies mentioned in the text that helps maintain fault tolerance in a system?
Redundant arrays of independent disks (RAID)
How does RAID technology help in maintaining fault tolerance?
By automatically reconstructing lost data from redundant components on other disks
What is the purpose of uninterruptible power supplies in the context of fault tolerance?
To provide backup power during outages to prevent data loss
Why is it essential for computer centers to have voltage regulators and backup batteries?
To counteract problems caused by total power failures and fluctuations
What is the main objective of an auditor when evaluating computer center security controls according to the text?
To assess and ensure the effectiveness of computer center security controls
What specific test should the auditor perform to ensure that the computer center's physical construction is appropriate?
Assess the physical location of the computer center
How should the auditor assess the adequacy of the fire detection system?
Ensure fire detection and suppression equipment is in place and tested regularly
What should the auditor review to determine the adequacy of RAID in place?
Graphical mapping of redundant disk storage
Which test should the auditor perform to verify that routine access to the computer center is restricted to authorized employees?
Review access log details
What is a key consideration for the auditor when assessing the physical location of the computer center?
Minimizing exposure to fire and other hazards
Why should the auditor review alternative procedures for recovering from a disk failure if RAID is not employed?
To address potential single points of system failure
Study Notes
- Auditor must verify physical security controls adequacy for protecting the organization from physical exposures.
- Insurance coverage on equipment must be adequate to compensate for destruction or damage to the computer center.
- Audit procedures include tests of physical security controls, such as tests of physical construction, fire detection system, access control, and RAID.
- Physical construction tests involve ensuring the computer center is built with fireproof material and has proper drainage for water damage.
- Fire detection system tests include confirming the presence of fire detection and suppression equipment, testing, and reviewing fire marshal records.
- Access control tests involve restricting routine access to authorized employees, reviewing access logs, and observing access processes covertly.
- RAID tests involve determining if the level of RAID is adequate for the organization's business risk associated with disk failure.
- Fault tolerance is crucial for system operation in case of hardware failure, application error, or operator error.
- Fault tolerance technologies include Redundant Arrays of Independent Disks (RAID) and Uninterruptible Power Supplies (UPS) to prevent data loss and system crashes during power outages.
Test your knowledge on fault tolerance technologies, such as redundant arrays of independent disks (RAID), and the concept of fault tolerance in systems to ensure continuous operation in the face of failures. Learn more about how fault tolerance controls are implemented to avoid single points of failure.
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