Final answer:
The best argument against providing the CFO with domain administrator access is separation of duties, mandatory access control, and discretionary access control.
Step-by-step explanation:
The best argument against providing the CFO with domain administrator access is separation of duties. Separation of duties is a principle that ensures different individuals are responsible for different aspects of a task or system, reducing the risk of fraud, errors, and misuse. By granting the CFO domain administrator access, there would be a concentration of power and potential conflict of interest, as the individual responsible for financial management would have control over the IT infrastructure.
Furthermore, mandatory access control is another concept that supports the argument against providing the CFO with domain administrator access. Mandatory access control is a security model where access decisions are based on a set of predefined rules determined by the system administrator. By giving the CFO domain administrator access, the organization would be deviating from the established access control rules and potentially compromising the security of the system.
Lastly, discretionary access control relates to the argument against granting the CFO domain administrator access. Discretionary access control allows users to determine who has access to their resources. By giving the CFO domain administrator access, this control is relinquished, and the CFO would have unrestricted control over the organization's domain, including the ability to make changes and access sensitive information.