300-820 Practice Test practice questions, page 11 of 11, with answer review and explanations.
Question 51
Which two considerations must be made when using Expressway media traversal? (Choose two.)
It is possible to NAT both Expressway-E interfaces
The Unified Communications traversal zone should be used for MRA
The Expressway-E must be put in a firewall DMZ segment
Expressway Control is the traversal server installed in the DMZ
Cisco UCM zone should be either traversal server or client
Question 52
Jabber cannot log in via Mobile and Remote Access. You inspect Expressway-C logs and see this error message: XCP_JABBERD Detail="Unable to connect to host '%IP%', port 7400:(111) Connection refused" Which is the cause of this issue?
Rich Media Session licenses are not activated on Expressway-E.
Expressway-E is listening on the wrong IP interface.
The destination port for Expressway-E is set to 7400 instead of 8443 on the Expressway-C.
The XCP Service is not activated on Expressway-E.
Question 53
Which configuration is required when implementing Mobile and Remote Access on Cisco Expressway?
IPS
SAML authentication
Cisco Unified CM publisher address
SSO
Question 54
What it is the purpose of using ICE for Mobile and Remote Access endpoints in the Cisco Collaboration infrastructure?
ICE controls the bandwidth usage for Cisco Collaboration endpoints if the endpoints are located outside the company network.
ICE enables Cisco Collaboration endpoints to determine if there is direct connectivity between them.
ICE uses FAST updates to optimize the video quality in case of packet loss. This technology is available only from Cisco Unified CM version 11.5 and later.
ICE enablement allows for the Cisco Collaboration endpoint to register through Expressway servers to Cisco Unified Communications Manager behind a firewall.
Question 55
When deploying an Expressway Core and Expressway Edge cluster for mobile and remote access, which TLS verity subject name must be configured on the Expressway-E UC traversal zone?