Some key components of any security scheme are identity verification and access control. There must be some way to make sure a user or service is who or what they claim to be, and to provide the correct level of access when requested. The AAA model (Authentication, Authorization, and Accounting) provides a framework in which these components work together to provide access based on the authenticated identity of the client. The core Security+ exam objectives covered in this chapter are as follows:
- Explain the function and purpose of authentication services
- Explain the fundamental concepts and best . . .
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