Implementing Cisco IP Telephony and Video Part 2 (CIPTV2, legacy) — Question 35

You must install an Expressway Edge server pair to enable mobile and remote access for a customer network. Which two requirements are used to install an MRA solution successfully? (Choose two.)

Answer options

• A. Configure your firewalls to allow traffic from Expressway-Core to Expressway-Edge servers and to allow traffic from internet hosts to Expressway-Edge servers. You do not need to configure firewall rules for traffic from Expressway-Edge to Expressway Core servers.
• B. You can deploy Edge servers with multiple network interfaces or with a single network interface. In both scenarios, you must enable NAT for the Internet-facing interface if you are using private Ip addresses.
• C. Make sure that Expressway-Edge and Expressway-Core servers have their server certificates signed by the same certification authority and the CA certificate is uploaded to the trusted CA store otherwise the Traversal zone will not work.
• D. Configure DNS SRV records according. Make sure that you can resolve DNS SRV record_collab-edge_tls.yourdomain.com outside your company network. Make sure that you cannot resolve it inside your company network.

Correct answer: C, D

Explanation

The correct answer is C and D because having the same certificate authority for both Expressway servers is crucial for them to communicate securely, and proper DNS resolution ensures that external clients can connect correctly. Options A and B are not correct as they pertain to firewall configurations and network interfaces, which do not directly impact the MRA installation requirements.