Question 3 Q: 3 Which two functionalities are provided by Session Border Controllers? (Choose two.) Options A: they span multiple networks and provide edge proxy functions between them B: they are session-aware devices that enable control of end-to-end interactive communications across PSTN network borders C: they enable premium interactive services across IP network borders by complementing existing edge routers D: they provide routing functions for IP, TCP, and SMTP using application parameters. E: they replace typical edge routers and firewalls in order to provide a unified network border for signaling and media control Save Question Show Answer Discussion 0 Clear Discussion Most voted Newest No comments yet. Be the first to comment. Post Be respectful. No spam. Correct Answer: A, C