Apple Certified Support Professional Practice Test

In the User column of Activity Monitor, the appearance of system or service-related user accounts is common. The correct option, which is unlikely to appear, refers to an account that is not standard for background processes or users interacting with the system’s Activity Monitor. The user account designated as "admin" typically represents a standard user who has administrative privileges on the system. Administrative users interact frequently with the operating system, running various applications and processes, making their appearance in the Activity Monitor quite common. In contrast, entries like "_appleevent," which is a special user related to Apple events, and "_fpsd," which is associated with system processes, are commonly shown for system-related functionalities and services. The "guest" account represents a limited privilege user that is intended for temporary access, which may also appear but is less involved in user activity compared to an admin. Thus, "admin" is less likely to be listed distinctly in the User column compared to these background and system users, as it represents a category of user accounts that generally operate under standard administrative rights rather than as a label for specific processes within Activity Monitor.