What type of network issue can irregular authentication attempts lead to?

Irregular authentication attempts can lead to authentication failures because they signify that the authentication process is being impeded or disrupted. Frequent or abnormal login attempts can overload authentication servers or trigger security measures such as account lockouts or throttling of requests, which ultimately prevents legitimate users from accessing the network. This scenario is particularly common in cases of brute force attacks, where attackers try various passwords to gain unauthorized access. The authentication process is critical to network security, and any irregularities can cause legitimate requests to be denied, resulting in authentication failures for users.

Other options, while they might relate to network issues, do not directly stem from irregular authentication attempts. For example, latency problems typically refer to delays in data transmission rather than issues specific to user authentication. Network outages suggest a more catastrophic failure of connectivity, not just problems with logging in. Jitter, which relates to variability in packet arrival times in a network communication, is unrelated to the authentication process itself. Thus, the focus on authentication failures as a direct consequence of irregular attempts is the most accurate choice.