Exam 300-715 topic 1 question 287 discussion

https://www.cisco.com/en/US/docs/security/ise/1.0/user_guide/ise10_prof_pol.html Reauth You can use this option to enforce reauthentication of an already authenticated endpoint when profiled. If you have multiple active sessions on a single port, the profiler service issues a CoA with the Reauth option even though you have configured CoA with the Port Bounce option. This function potentially avoids disconnecting other sessions as might occur with the Port Bounce option.

It has to be D reauth because it has "Multiple sessions"

The available CoA options include the following: No CoA (default): Use this option to disable the global configuration of CoA. Port Bounce: Use this option if switch ports will have only one session (one active endpoint attached). If ports shall have multiple sessions, then use the Reauth option. Reauth: Use this option to enforce reauthentication as appropriate for profiled endpoints. So A would be the best answer, I think.

The answer A is the best option here because port bounce action involves shutting down the port and then bringing it back up. This effectively terminates all sessions on the port and forces any connected devices to re-authenticate. This is suitable for clearing multiple sessions on a port and ensuring that the devices reconnect properly.