AN administrator must configure a federation between company A and company B using the SIP/simple protocol .
What are the configuration items that are available?
A . Port 5061; TLS encryption; Instant Messaging, Presence, and VoIP support
B . no encryption; Instant Messaging, Presence, and VoIP support
C . port 5222; TLS encryption; Instant Messaging, Presence, and VoIP support
D . no encryption; Instant Messaging support
Answer: A