Explanation
Sharing a hot site facility is sometimes necessary in the case of a major disaster. Also, first come, first served usually determines priority of access based on general industry practice. Access to a hot site is not indefinite; the recovery plan should address a long-term outage. In case of a disaster affecting a localized geographical area, the vendor's facility and capabilities could be insufficient for all of its clients, which will all be competing for the same resource. Preference will likely be given to the larger corporations, possibly delaying the recovery of a branch that will likely be smaller than other clients based locally.

Obtaining senior management buy-in is the best way to enable the assignment of risk and control ownership because it helps to establish the authority and accountability of the risk and control owners, as well as to provide them with the necessary resources and support to perform their roles. Risk and control ownership refers to the assignment of specific responsibilities and accountabilities for managing risks and controls to individuals or groups within the organization. Obtaining senior management buy-in helps to ensure that risk and control ownership is aligned with the organizational objectives, structure, and culture, as well as to communicate the expectations and benefits of risk and control ownership to all stakeholders. Therefore, obtaining senior management buy-in is the correct answer.
Reference:
https://www.protechtgroup.com/en-au/blog/risk-control-management
https://www.mckinsey.com/~/media/mckinsey/dotcom/client_service/risk/working%20papers/23_getting_risk_ownership_right.ashx
https://www.linkedin.com/pulse/risk-controls-who-owns-them-david-tattam

Explanation/Reference:
Explanation:
In the case of a probe, the situation should be monitored and the affected network segment isolated.
Rebooting the router, powering down the demilitarized zone (DMZ) servers and enabling server trace routing are not warranted.

Section: INFORMATION SECURITY PROGRAM MANAGEMENT

Routine administration of all aspects of security is delegated, but senior management must retain overall responsibility. The information security officer supports and implements information security for senior management. The data owner is responsible for categorizing data security requirements. The data custodian supports and implements information security as directed.