Cisco 300-820 Practice Exams
Last updated on Oct 22,2026- Exam Code: 300-820
- Exam Name: Implementing Cisco Collaboration Cloud and Edge Solutions (CLCEI)
- Certification Provider: Cisco
- Latest update: Oct 22,2026
What is a key configuration requirement for Hybrid Message Service High Availability deployment with multiple IM and Presence clusters?
- A . You must have the Intercluster Sync Agent working across your IM and Presence clusters.
- B . You must have the Intercluster Lookup Service working across all of your IM and Presence clusters.
- C . Your IM and Presence Service clusters must have Multiple Device Messaging disabled.
- D . AXL service should be activated only on the publisher of each IM and Presence cluster.
Refer to the exhibit.
An ISDN gateway is registered to Expressway-C with a prefix of 9 and/or it has a neighbor zone specified that routes calls starting with a 9.
Which value should be entered into the "Source" eld to prevent toll fraud regardless at origin of the call?
- A . Traversal Zone
- B . Any
- C . Neighbor Zone
- D . All
Which user management method uses the Webex Directory Connector to add and synchronize users to the Control Hub organization?
- A . Synchronize from Active Directory.
- B . Synchronize from Azure AD.
- C . Synchronize from “Add using People API”.
- D . Synchronize from Okta.
Refer to the exhibit.
The firewall has been configured from NAT 192.168.108.2 to 100.64.0.1.
Which configuration changes are needed for an Expressway-E with dual network interfaces?
A)
B)
C)
D)
- A . Option A
- B . Option B
- C . Option C
- D . Option D
An administrator must configure the DNS SRV records for Mobile and Remote Access for a company with the domain example.com, the Expressway-E FQDN is ExpE.example.com, and the Expressway-C FQDN is Exp-C.example.com.
What must the administrator configure to allow external clients to discover the Expressway-E server?
- A . SRV record _collab-edge._tls.example.com that resolves to ExpE.example.com on port 8443
- B . SRV record _cisco-uds._tcp.example.com that resolves to ExpE.example.com on port 5061
- C . SRV record _cisco-uds._tcp.example.com that resolves to ExpC.example.com on port 8443
- D . SRV record _collab-edge._tls.example.com that resolves ta ExpE.example.com on port 5061
An engineer is investigating failing incoming calls that are expected to connect. The engineer notices that the failed calls all have a port number of 5060 at the end of the URI. The search rules are configured in a way that they do not expect a port to be included.
Which configuration allows the routing of this call?
- A . * transform with a pattern string of *(.*)@example.com(:5060)?"
* replace a suing of [email protected] - B . * search rule with a pattern string of “(.*)@example.com(:5050)?"
* replace a string of 12@example com - C . search rule with a pattern string of “(.*)@example.com(:5060)?"
* replace a string of [email protected] - D . * transform with a pattern string of “(.*)@example.com(:5060)?"
* replace a string of [email protected]
Which protocol should be used to verify the connectivity for different media paths found during a call using ICE?
- A . STUN
- B . RTP
- C . SNMP
- D . TURN
A
Explanation:
Reference: https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html
Which zone is required on a B2B deployment between Expressway-C and Expressway-E?
- A . traversal zone
- B . DNS zone
- C . default zone
- D . neighbor zone
Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?
- A . Off
- B . Best Effort
- C . Auto
- D . Force Encrypted
A
Explanation:
Reference: https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/admin_guide/Cisco-Expressway-Administrator-Guide-X8-10.pdf
What are two reasons why port 8443 is unreachable from the Internet to the Expressway-E? (Choose two.)
- A . The MRA license is missing on the Expressway-E.
- B . The Unified Communications zone is down.
- C . Transform is not configured on Expressway-E.
- D . The SRV record for _cisco-uds is misconfigured.
- E . The firewall is blocking the port.