Explanation
When reviewing user management roles, the group that presents the GREATEST risk based on their permissions is privileged users. This is because privileged users are users who have elevated or special access rights or permissions to systems or resources, such as administrators, superusers, root users, etc. Privileged users present the greatest risk based on their permissions, because they can perform actions or operations that can affect the security, availability, or functionality of systems or resources, such as installing or uninstalling software, modifying or deleting files, granting or revoking access rights, etc. Privileged users can also abuse or misuse their permissions for malicious or unauthorized purposes, such as stealing or leaking sensitive data, sabotaging systems or services, bypassing security controls, etc. The other options are not groups that present the greatest risk based on their permissions, but rather different types of users that may have different levels of access rights or permissions to systems or resources, such as database administrators (B), terminated employees C, or contractors (D).

Explanation
The BEST characteristic that describes security mechanisms for mobile devices is easy to control through mobile device management. This is because mobile device management is a technique that allows organizations to centrally manage and secure mobile devices, such as smartphones, tablets, laptops, etc., that are used by their employees or customers. Mobile device management helps to enforce security policies, configure settings, install applications, monitor usage, wipe data, etc., on mobile devices remotely and efficiently. The other options are not characteristics that describe security mechanisms for mobile devices, but rather different aspects or factors that affect security mechanisms for mobile devices, such as weakness (B), inadequacy C, or reliability (D).

Explanation
The cloud characteristic that refers to resource utilization that can be optimized by leveraging charge-per-use capabilities is measured service. This is because measured service is a characteristic of cloud computing that involves monitoring, controlling, and reporting on the usage and consumption of cloud resources by cloud providers and consumers. Measured service helps to optimize resource utilization by leveraging charge-per-use capabilities, which means that cloud consumers only pay for the amount of resources that they actually use or consume, rather than paying for fixed or predetermined amounts of resources. The other options are not cloud characteristics that refer to resource utilization that can be optimized by leveraging charge-per-use capabilities, but rather different characteristics of cloud computing that describe other aspects or benefits of cloud services, such as on demand self-service (A), elasticity (B), or resource pooling (D).

Explanation
In cloud computing, the type of hosting that is MOST appropriate for a large organization that wants greater control over the environment is private hosting. Private hosting is a type of cloud service model where the cloud infrastructure is dedicated to a single organization and hosted either on-premise or off-premise by a third-party provider. Private hosting offers more control over the security, performance, customization, and compliance of the cloud environment than other types of hosting.

Explanation
The BEST indication that an organization's vulnerability management process is operating effectively is that remediation efforts are prioritized. This is because prioritizing remediation efforts helps to ensure that the most critical and urgent vulnerabilities are addressed first, based on their severity, impact, and exploitability.
Prioritizing remediation efforts also helps to optimize the use of resources and time for mitigating vulnerabilities and reducing risks. The other options are not as indicative of an effective vulnerability management process, because they either involve communicating (A), approving (B), or reviewing C aspects that are not directly related to remediating vulnerabilities.