When a data center is attempting to restore computing facilities at an alternative site following a disaster, the operating system should be restored FIRST. Here's why:
* Operating System (OS):
* The OS is the foundation of any computing environment. It manages hardware resources, provides essential services, and allows applications to run.
* Restoring the OS ensures that the infrastructure is operational and ready for further recovery steps.
* Without a functional OS, applications cannot execute, and data backups cannot be effectively restored.
* Data Backups:
* While data backups are critical for recovery, they depend on a working infrastructure.
* If the OS is not operational, restoring data backups becomes challenging.
* Data backups should follow the OS restoration.
* Applications:
* Applications rely on the OS to function.
* Restoring applications before the OS may lead to compatibility issues or incomplete functionality.
* Applications should be restored after ensuring a stable OS environment.
* Decision Support System (DSS):
* DSS is an application category.
* It should follow the restoration of both the OS and critical applications.
In summary, prioritize restoring the operating system, which forms the basis for subsequent recovery steps12.
Once the OS is functional, proceed with data backups, applications, and other systems as needed.

Explanation
The finding that should be of most concern to an IS auditor when evaluating information security governance within an organization is that the data center manager has final sign-off on security projects. This indicates a lack of segregation of duties and a potential conflict of interest between the operational and security roles. The data center manager may have access to sensitive information or systems that should be protected by security controls, or may influence or override security decisions that are not in the best interest of the organization.
This finding also suggests that there is no clear accountability or authority for information security governance at a higher level, such as senior management or board of directors. The other findings are not as concerning as this one, although they may indicate some areas for improvement or monitoring. References:
ISACA, CISA Review Manual, 27th Edition, chapter 5, section 5.11
ISACA, IT Governance Using COBIT and Val IT: Student Booklet - 2nd Edition4

Section: Protection of Information Assets