Cisco 300-820 Practice Exams
Last updated on Oct 21,2026- Exam Code: 300-820
- Exam Name: Implementing Cisco Collaboration Cloud and Edge Solutions (CLCEI)
- Certification Provider: Cisco
- Latest update: Oct 21,2026
What is the last step for domain management in Cisco Webex Control Hub if an engineer adds users already signed in with the company domain?
- A . Publish a domain.
- B . Add a domain.
- C . Verify a domain.
- D . Claim a domain.
Which two considerations must be made when using Expressway media traversal? (Choose two.)
- A . It is possible to NAT both Expressway-E interfaces
- B . The Unified Communications traversal zone should be used for MRA
- C . The Expressway-E must be put in a firewall DMZ segment
- D . Expressway Control is the traversal server installed in the DMZ
- E . Cisco UCM zone should be either traversal server or client
BC
Explanation:
Reference: https://www.ciscolive.com/c/dam/r/ciscolive/apjc/docs/2018/pdf/BRKUCC-2801.pdf
An administrator is configuring a new Cisco Webex Hybrid Message Service deployment, and the Expressway-C Message Connector is successfully registered in the Control Hub. After the server information of the IM and Presence server is added to the Expressway-C, an error “Connectivity to IM and Presence AXL Service could not be established” is displayed in the Control Hub. The Cisco AXL Web Service is enabled on the IM and Presence Service publisher, and the main administrator account enabled for AXL API permission is being used.
Which configuration change must be made to resolve this error?
- A . Enable the Cisco AXL Web Service on the Control Hub
- B . Enable the Cisco AXL Web Service on the Expressway-C Message Connector
- C . Enable an End User account for AXL.API permissions on the IM and Presence Service publisher
- D . Enable a second administrator account for AXL API permissions on the IM and Presence Service publisher
An administrator made changes to a directory connector for Webex AD synchronization. The number of users synchronized is quite large and the change should affect only a limited number of users.
How can the administrator check the result before executing the synchronization?
- A . Initiate an incremental synchronization from the Director Connector app on the on-premises Windows server because it will ask to save the changes.
- B . Initiate a dry run of an incremental synchronization from the Director Connector app on the on-premises Windows server.
- C . Initiate a dry run of an incremental synchronization from the Director Connector in Control Hub.
- D . Initiate an incremental synchronization from the Director Connector in Control Hub because it will ask to save changes.
Which two statements about Cisco Webex Video Mesh Nodes are true? (Choose two.)
- A . When Expressway Core works with VMN clusters, Expressway Core decides which VMN is used for signaling/media connection.
- B . Cloud-registered devices choose a VMN cluster based on the lowest STUN round trip delay.
- C . The cascading traffic between VMN must bypass the firewall.
- D . When Cisco Unified Communications Manager works with multiple VMNs, Cisco Unified CM decides which VMN is used for signaling connection.
- E . A VMN can terminate a media connection while operating in maintenance mode.
When a Cisco Webex Video Mesh Node is configured for an organization, which process does the Webex Teams client use to discover the optimal bridging resource?
- A . the lowest STUN round-trip delay to each node and cloud
- B . a reachable Video Mesh Node and then overflows to the cloud, if needed
- C . the SIP delay header during call setup
- D . an HTTPS speed and latency test to each node and the cloud
B
Explanation:
Reference: https://www.cisco.com/c/en/us/solutions/collateral/unied-communications/spark-hybrid-services/datasheet-c78-738153.html
Which step is required when configuring Cisco Webex Hybrid Message Service?
- A . Register Expressway-C Connector Hosts to the Cisco Webex Cloud.
- B . Register Expressway-C to Cisco Unified Communications Manager.
- C . Add Expressway-C and Cisco United CM to the Cisco Webex Cloud.
- D . Add Cisco Unity Connection to Expressway-E.
Which 16-digit number is unique to a serial number and is used to enable the system?
- A . RMS license key
- B . option key
- C . release key
- D . Expressway series
What allows endpoints behind a NAT to discover the paths through which they will pass media?
- A . RTP
- B . TLS
- C . SNMP
- D . ICE
D
Explanation:
Reference: https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html
Refer to the exhibit.
An Expressway-C and Expressway-E are configured for B2B calling and the Expressway-E zone is set to TLS Verify Currently, calls do not reach the Expressway-C. The Traversal Client zone on the Expressway-C for B2B reports the information in the exhibit for the Peer 1 address.
Which action resolves this error?
- A . Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
- B . Configure the Expressway-C Traversal Client zone transport protocol with TCP.
- C . Add a server certificate to the Expressway-C that is signed by a certificate authority.
- D . Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.