A.Enable the IGMP snooping capability and define the IGMP timeout period.
B.Set the Ethernet multicast mode to Enabled， enable the IGMP snooping capability， and define the IGMP  timeout period.
C.Set the multicast monitor function to Enabled， enable the IGMP snooping capability， and define the  mandatory data rate to the minimum value supported.
D.Set the Ethernet multicast mode to Multicast and define the multicast group address.

A.Browse to the phone using the MAC address of the phone.
B.Use HTTPS:// preceding the address of the phone.
C.Change web access to read/write for the MAC address of the phone on Cisco Unified Communications  Manager.
D.Enter the username and password of the phone.
E.Ensure that the host is on the same subnet as the remote phone.

A.EAP-TLS
B.EAP-TTLS
C.EAP-SIM
D.PEAPv1/EAP-GTC
E.LEAP

A.Avoid channels with high AP co-channel interference.
B.Use channels with high AP co-channel interference to avoid channel roams.
C.Set the 2.4-GHz data rate of 5.5 Mb/s to required.
D.Use 5-GHz channels when possible.
E.Use 2.4-GHz channels when possible.

A.11 Mb/s
B.18 Mb/s
C.24 Mb/s
D.54 Mb/s