Senior management, represented in the steering committee, has ultimate responsibility for determining what levels of risk the organization is willing to assume. Legal counsel, the external auditors and security management are not in a position to make such a decision.

Section: INFORMATION SECURITY PROGRAM MANAGEMENT

A single point of administration in network monitoring is a centralized system that allows network administrators to manage and monitor the entire network from one location. A single point of administration can provide several benefits, such as:
Promoting efficiency in control of the environment: A single point of administration can simplify and streamline the network management tasks, such as configuration, troubleshooting, performance optimization, security updates, backup and recovery, etc. It can also reduce the time and cost of network maintenance and administration, as well as improve the consistency and quality of network services.
Reducing unauthorized access to systems: A single point of administration can enhance the network security by implementing centralized authentication, authorization and auditing mechanisms. It can also enforce consistent security policies and standards across the network, and detect and respond to any unauthorized or malicious activities.
Preventing inconsistencies in information in the distributed environment: A single point of administration can ensure the data integrity and availability by synchronizing and replicating the data across the network nodes. It can also provide a unified view of the network status and performance, and facilitate the analysis and reporting of network data.
Allowing administrative staff to make management decisions: A single point of administration can support the decision-making process by providing relevant and timely information and feedback to the network administrators. It can also enable the administrators to implement changes and improvements to the network based on the business needs and objectives.
Therefore, the primary benefit of introducing a single point of administration in network monitoring is that it promotes efficiency in control of the environment, as it simplifies and streamlines the network management tasks and improves the network performance and quality. Reference = CISM Review Manual, 16th Edition eBook | Digital | English1, Chapter 4: Information Security Program Development and Management, Section 4.3: Information Security Program Resources, Subsection 4.3.1: Information Security Infrastructure and Architecture, Page 205.

Predetermined expiration dates are the most effective means of removing systems access for temporary users. Reliance on managers to promptly send in termination notices cannot always be counted on, while requiring each individual to sign a security acknowledgement would have little effect in this case.