Free Cisco CLCEI 300-820 Actual Exam Questions - Question 5 Discussion
on the internal network to the Internet?
A/D? I see A as handling media traversal which is critical when calls cross network boundaries, so it might be necessary alongside D. Both signaling and media need to be managed properly.
D sounds right since interworking handles SIP protocol issues for routing calls properly. D
I think we can rule out C because Dual-NIC is more about hardware setup and network segmentation rather than call routing itself. Also, B feels like a firewall-level thing, which might be necessary but doesn’t directly solve the call routing challenge on Expressway-E. Between A and D, A focuses on media bridging which is important, but the question explicitly mentions routing calls, so maybe interworking (D) includes both signaling and media protocol handling? Could interworking be the broader solution that encompasses what A suggests?
Maybe D makes sense since interworking deals with protocol compatibility between internal and external networks, which is key for Internet call routing. A sounds more about media, but signaling also needs handling.
B seems off because a static NAT route on the firewall usually handles IP translation, not call routing. The question focuses on call routing, so NAT alone might not cut it here.
A. Enabling the application layer gateway fits since it handles media traffic bridging, which is key for routing calls from internal to external networks without just relying on routing or NAT alone.
Seems like C makes sense here, for routing between networks.