Cisco 300-820 Implementing Cisco Collaboration Cloud and Edge Solutions (CLCEI) Online Training
Cisco 300-820 Online Training
The questions for 300-820 were last updated at Jan 12,2026.
- Exam Code: 300-820
- Exam Name: Implementing Cisco Collaboration Cloud and Edge Solutions (CLCEI)
- Certification Provider: Cisco
- Latest update: Jan 12,2026
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.
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
What it is the purpose of using ICE for Mobile and Remote Access endpoints in the Cisco Collaboration infrastructure?
- A . ICE controls the bandwidth usage for Cisco Collaboration endpoints if the endpoints are located outside the company network.
- B . ICE enables Cisco Collaboration endpoints to determine if there is direct connectivity between them.
- C . 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.
- D . ICE enablement allows for the Cisco Collaboration endpoint to register through Expressway servers to Cisco Unified Communications Manager behind a firewall.
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?
- A . Webex CUSP Cluster Name
- B . Expressway-E Cluster Name
- C . Cisco Unified Communications Manager Publisher FQDN
- D . Expressway-C Cluster Name
Refer to the exhibit.
Mobile Cisco Jabber cannot register with on-premises Cisco Unified Communications Manager using Mobile and Remote Access. Some logs were captured on Expressway Edge.
Which action corrects this problem?
- A . Ensure that the peer address does not match the Common Name on certificate.
- B . Ensure that the _cisco-uds SRV record has been configured.
- C . Ensure that the credential has been entered correctly.
- D . Ensure that the SIP domains are added on Expressway Core.
Which two statements about Expressway media traversal are true? (Choose two.)
- A . Expressway Control is the traversal server installed in the DMZ.
- B . The Expressway Edge must be put in a firewall DMZ segment.
- C . Cisco Unified Communications Manager zone can be either traversal server or client.
- D . The Unified Communications traversal zone can be used for Mobile and Remote Access.
- E . Both Expressway Edge interfaces can be NATed.
Which zone is required between Expressway-E and Expressway-C in Mobile and Remote Access deployments?
- A . Unified Communications traversal zone
- B . neighbor zone
- C . DNS zone
- D . traversal zone
For a Mobile and Remote Access deployment, which server’s certificate must include the Unified registration domain as a Subject Alternate Name?
- A . Expressway-C server certificate
- B . Cisco Unified Communications Manager server certificate
- C . Expressway-E server certificate
- D . Expressway-C and Expressway-E server certificate
A Jabber user is being prompted to trust the Expressway-E certificate when using Mobile and Remote Access. The administrator has validated that the Expressway-E certificate is being trusted by the machine running the Jabber client.
What else can be done to solve this problem?
- A . Create a new CSR with new information on the SAN eld.
- B . Include Cisco Unified Communications Manager registration domain in the Expressway-E certificate as a SAN.
- C . Change the domain name.
- D . Change the FQDN of the Expressway.
Which DNS record and port combination must be resolved externally for Mobile and Remote Access to be used?
- A . _collab-edge on port 8443
- B . _cisco-uds-edge on port 5061
- C . _collab-edge on port 5061
- D . _cisco-uds on port 8443
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