Practice Free 300-820 Exam Online Questions
Cisco media traversal technology has enabled a secure environment where internal video endpoints call and receive calls from external video endpoints.
How does the Expressway-C and Expressway-E communicate?
- A . Expressway-C establishes an outgoing request to Expressway-E, enabling the Expressway-E in the DMZ to notify the internal Expressway-C of an incoming call from an external endpoint.
- B . Internal endpoints are registered to Expressway-E in the DMZ. Expressway-C, which is also in the DMZ, will receive and make calls on behalf of Expressway-E because they are in the same network.
- C . Expressway-E establishes an outgoing request to Expressway-C, enabling the Expressway-C in the DMZ to notify the internal Expressway-E of an incoming call from an external endpoint.
- D . Internal endpoints are registered to Expressway-C in the DMZ. Expressway-E, which is also in the DMZ, will receive and make calls on behalf of Expressway-C because they are in the same network.
A
Explanation:
Reference: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/exwy_b_mra-expressway-deployment-guide/exwy_b_mra-expressway-deployment-guide_chapter_00.html
Refer to the exhibit.
The web server is set up to store contact photos and the Cisco Jabber-config.xml file is updated for all clients. After these changes, Jabber for Windows users cannot view the contact photos when they are connected via Mobile and Remote Access.
Which action resolves the issue?
- A . Update the “PhotoUriWithToken’ entry to “Https”.
- B . Update the contact photos to “png”.
- C . Add the web-server address within the HTTP server allow list on the Expressway-C.
- D . Add the web-server address within the HTTP server allow list on the Expressway-E.
Which two licenses are required for the B2B feature to work? (Choose two.)
- A . Traversal Server
- B . TURN Relays
- C . Rich Media Sessions
- D . Advanced Networking
- E . Device Provisioning
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?
- A . Rich Media Session licenses are not activated on Expressway-E.
- B . Expressway-E is listening on the wrong IP interface.
- C . The destination port for Expressway-E is set to 7400 instead of 8443 on the Expressway-C.
- D . The XCP Service is not activated on Expressway-E.
An engineer must enable the communication between two separate Expressway-C servers to allow inbound and outbound calling between different endpoints registered on each server.
Which configuration must happen?
- A . Configure a traversal zone on each server with a destination of the other Expressway-C.
- B . Configure a neighbor zone on each server with a destination of the other Expressway-C.
- C . Configure a transform on each server to strip the port numbers at the end of the alias.
- D . Configure a transform on each server to convert the calling alias into the called alias.
A call is sent by Cisco UCM to Expressway with a URI of [email protected]. If (7508…) @expc1a.pod8.test.lab.* is the pattern string, what would be the replacement string of the transform in Expressway to re-write the call so that it becomes [email protected]?
- A . [email protected].@
- B . [email protected].*
- C . [email protected]
- D . [email protected].!
Which configuration is required when implementing Mobile and Remote Access on Cisco Expressway?
- A . IPS
- B . SAML authentication
- C . Cisco Unified CM publisher address
- D . SSO
When designing the call control on a Cisco Expressway Core, which is the sequence of dial plan functions?
- A . transforms, CPL, user policy, search rules
- B . search rules, zones, local zones
- C . DNS zone, local zone, search rules
- D . search rules, transforms
Refer to the exhibit.
In an environment SIP devices are registered to CUCM and H.323 devices to VCS.
What would be required to enable these calls to setup correctly?
- A . Create a presearch transform.
- B . Change the domain of SIP endpoint A to cisco.com.
- C . Disable SIP in the external zone.
- D . Change the interworking mode to On.
Refer to the exhibit.
The administrator attempted to log in, but Jabber clients cannot log in via mobile and remote access.
How is this issue resolved?
- A . Skype for Business mode must be disabled on the DNS server because it conflicts with Jabber login requirements.
- B . The domain pod1.local must be deprovisioned from the Webex cloud for Jabber logins.
- C . A DNS SRV record must be created for _collab-edge._tls.pod1.local that points to the Expressway-E.
- D . The username [email protected] is invalid. The user should instead sign-in simply as jabberuser.