The correct answer is Detective control. An audit trail is a record of events to piece together what has happened and allow enforcement of individual accountability by creating a reconstruction of events. They can be
used to assist in the proper implementation of the other controls,
however.

Explanation/Reference:
Explanation:
Class A contains all addresses in which the most significant bit is zero. The address range of Class A is
0.0.0.0 - 127.255.255.255.
Incorrect Answers:
B: Class A contains only one single fixed bit, not two.
C: Class A contains only one single fixed bit, not three.
D: Class A contains only one single fixed bit, not three.
References:
https://en.wikipedia.org/wiki/Classful_network

Accuracy is the most critical characteristic of a biometric identifying verification system. Accuracy is measured in terms of false rejection rate (FRR, or type I errors) and false acceptance rate (FAR or type II errors). The Crossover Error Rate (CER) is the point at which the FRR equals the FAR and has become the most important measure of biometric system accuracy. Source: TIPTON, Harold F. & KRAUSE, Micki, Information Security Management Handbook, 4th edition (volume 1), 2000, CRC Press, Chapter 1, Biometric Identification (page 9).

RBAC - This type of model provides access to resources based on the role the users holds within the company or the tasks that user has been assigned. - Shon Harris All-in-one CISSP Certification Guide pg 937 Rule-based access control is a type of mandatory access control because rules determine this access (such as the correspondence of clearances labels to classification labels), rather than the identity of the subjects and objects alone. . -Ronald Krutz The CISSP PREP Guide (gold edition) pg 45-46

The advantage of on premise credential management systems is that they provide more control over the system configuration and customization. On premise credential management systems are the systems that store and manage the credentials, such as usernames, passwords, tokens, or certificates, of the users or the devices within an organization's own network or infrastructure. On premise credential management systems can offer more flexibility and security for the organization, as they can tailor the system to their specific needs and requirements, and they can enforce their own policies and standards for the credential management.
* A. Improved credential interoperability is not an advantage of on premise credential management systems, but rather an advantage of cloud-based credential management systems. Cloud-based credential management systems are the systems that store and manage the credentials of the users or the devices on a third-party cloud service provider's network or infrastructure. Cloud-based credential management systems can offer more interoperability and scalability for the organization, as they can support different types of credentials and devices, and they can adjust to the changing demand and workload of the credential management.
* C. Lower infrastructure capital costs is not an advantage of on premise credential management systems, but rather an advantage of cloud-based credential management systems. Cloud-based credential management systems can reduce the infrastructure capital costs for the organization, as they do not require the organization to purchase, install, or maintain their own hardware or software for the credential management. Instead, the organization can pay a subscription fee or a usage fee to the cloud service provider for the credential management service.
* D. Reduced administrative overhead is not an advantage of on premise credential management systems, but rather an advantage of cloud-based credential management systems. Cloud-based credential management systems can reduce the administrative overhead for the organization, as they do not require the organization to perform the tasks or the functions related to the credential management, such as backup, recovery, patching, or updating. Instead, the cloud service provider can handle these tasks or functions for the organization, as part of the credential management service.
References: CISSP All-in-One Exam Guide, Eighth Edition, Chapter 6, page 346; Official (ISC)2 CISSP CBK Reference, Fifth Edition, Chapter 6, page 307