What are two functions performed by System Manager? (Choose two.)

What are two functions performed by System Manager? (Choose two.)
A . It delivers a set of shared management services and a common console.
B . If ‘Direct IP-IP Auto Connections,
C . 323-
D . 323 two-party calls will shuffle to establish a direct media.
E . It provides SIP registration and authentication.
F . If ‘Initial IP-IP Direct Media’ is enabled, SIP-SIP two party calls will use direct media.
G . It provides centralized management of enterprise-wide dial plans.

Answer: AE