CISSP Practice Exam 2025 – Complete Prep Guide

In authentication systems, a Type II error specifically refers to the scenario where authorized users are incorrectly rejected or denied access. This means that the focus of Type II error is primarily on the system failing to recognize valid credentials, resulting in legitimate users being unable to gain access to the system.

Type II error is important to understand in the context of security because while it is crucial to prevent unauthorized access (which would correspond to a Type I error), it can be even more detrimental to prevent legitimate users from accessing their accounts or systems. Thus, the system's accuracy in authentication is paramount to ensuring that those who should have access are not inadvertently locked out.

The other options, while related to aspects of authentication, do not specifically represent the Type II error focus. Accepting unauthorized users represents a failure in the system's ability to authenticate correctly and corresponds to a Type I error. Granting temporary access does not relate directly to the classification of Type II errors in the context of authentication. Therefore, recognizing that Type II errors are concerned with rejecting authorized users clarifies the distinction in authentication challenges faced by security systems.