A group of users on the same floor of a campus residence experience connectivity problems continuously throughout the morning. The administrator suspects that it is a L1 problem with physical interference.
What can the administrator do to find the cause of this problem?

Refer to the exhibit.

Controllers are configured in a cluster as shown in the exhibit. These are the network details.
-AMobility Master (MM) managers the cluster.
-The cluster contains two controllers: C1 and C2.
-AP1 and AP2 use C1 as their Active AP Anchor Controller (A-AAC), with C2 as their Standby AAC (S-AAC).
-AP3 and AP4 use C2 as their A-AAC with, C1 as their S-AAC.
User1 establishes a wireless connection via AP1, where the Active User Controller (U-UAC) assigned is C1, with C2 as the standby. What happens when User1 roams the wireless network and eventually their session is handled by AP3?

An administrator creates a user role that department A in acompany uses. Various other roles exist for other departments. All employees connect to the same ESSID, which authenticates to an external AAA server. How should the administrator configure to assign the appropriate roles to the employees?

An administrator makes a configuration change on a Mobility Master (MM) that causes a Managed Controller to lose connectivity with the MM. The MC attempts auto roll-back, but this fails.
How should the administrator recover from this problem?

In a cluster-controller environment, which Aruba component in a network builds a cache table of mDNS records that can be used to help user devices access Apple Bonjour services?