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In order to pass the Cisco 300-820 exam, candidates must have a solid understanding of collaboration technologies and their underlying architecture, as well as the ability to configure and manage these technologies. They must also be able to troubleshoot and optimize these solutions to ensure their reliability and performance. Earning this certification can help IT professionals advance their career and demonstrate their expertise in this rapidly growing field.
NEW QUESTION # 84
Which two licenses are required for the Expressway B2B feature to work? (Choose two)
- A. TURN Relays
- B. Traversal Server
- C. Advanced Networking
- D. Rich Media Sessions
- E. Device Provisioning
Answer: B,D
NEW QUESTION # 85
An administrator configures a secure SIP trunk in Cisco UCM to Expressway-C. The SIP trunk fails to become active, and an examination of a packet capture finds that the TLS handshake failed with a "Certificate Unknown" error from Cisco UCM. To allow the Cisco UCM to trust the Expressway-C and establish a TLS connection, the administrator will upload the Expressway server certificate to the trust store. To which trust store must the certificate be uploaded?
- A. ipsec-trust
- B. TVS-trust
- C. CallManager-trust
- D. tomcat-trust
Answer: C
NEW QUESTION # 86
Refer to the exhibit. While troubleshooting Cisco Jabber login issues, there are some error messages.
Why is the Jabber client unable to sign in?
- A. down Cisco Unified Communications Manager server
- B. incorrect login credentials
- C. service discovery issues
- D. XMPP bind failures
Answer: D
Explanation:
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-
7/exwy_b_mra-deployment/exwy_m_mra-troubleshooting.pdf
NEW QUESTION # 87
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 SIP domains are added on Expressway Core.
- B. Ensure that the peer address does not match the Common Name on certificate.
- C. Ensure that the _cisco-uds SRV record has been configured.
- D. Ensure that the credential has been entered correctly.
Answer: D
NEW QUESTION # 88
How is the communication routed in a Hybrid deployment so that people on Cisco Cloud-Based IM are able to communicate with Cisco Jabber users in the on-premises environment?
- A. The Cisco Unified IM and Presence server establishes a connection using the outgoing path through the Cisco Expressways that terminates in the Cisco Webex Cloud to create the hybrid environment that links the two services together.
- B. The Expressway-E located in the DMZ establishes a connection with the Cisco Webex Cloud to enable the hybrid service and allow the two services to communicate.
- C. The Cisco UC server establishes a connection using the outgoing path through the Cisco Expressways that terminates in the Cisco Webex Cloud to create the hybrid environment that links the two services together.
- D. The Expressway-C enables a connection directly with the Cisco Webex Cloud to enable the hybrid service and allow the two services to communicate.
Answer: D
NEW QUESTION # 89
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. 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.
- B. 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.
- C. 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.
- D. 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.
Answer: B
Explanation:
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
NEW QUESTION # 90
Which media encryption mode can be configured on an Expressway zone?
- A. IPsec
- B. Advanced Encryption Standard
- C. force unencrypted
- D. Triple Data Encryption Standard
Answer: C
NEW QUESTION # 91
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. Expressway-C and Expressway-E server certificate
- C. Cisco Unified Communications Manager server certificate
- D. Expressway-E server certificate
Answer: D
Explanation:
The Expressway-E server certificate needs to include the following elements in its list of subject alternative names (SAN):
- Unified CM registrations domains
- XMPP federation domains
- IM and Presence chat node aliases (federated group chat)
NEW QUESTION # 92
Which two statements about Expressway media traversal are true? (Choose two.)
- A. Both Expressway Edge interfaces can be NATed.
- 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. Expressway Control is the traversal server installed in the DMZ.
- E. The Unified Communications traversal zone can be used for Mobile and Remote Access.
Answer: B,E
Explanation:
Explanation
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-10/Cisco-Expressway
NEW QUESTION # 93
What is a key configuration requirement for Hybrid Message Service High Availability deployment with multiple IM and Presence clusters?
- A. Your IM and Presence Service clusters must have Multiple Device Messaging disabled.
- B. AXL service should be activated only on the publisher of each IM and Presence cluster.
- C. You must have the Intercluster Lookup Service working across all of your IM and Presence clusters.
- D. You must have the Intercluster Sync Agent working across your IM and Presence clusters.
Answer: D
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/spark/hybridservices/messageservice
NEW QUESTION # 94
Refer to the exhibit.
When configuring a search rule that routes calls to a zone, what occurs when 13358 is dialed?
- A. 13358 is replaced by 135, and then is sent to the traversal zone.
- B. 13358 is replaced by 135 and remains in the same zone.
- C. 13358 is replaced by 135, and then is sent to the local zone.
- D. 13358 is sent directly to the traversal zone.
Answer: A
NEW QUESTION # 95
Which part of a hybrid cloud-based deployment with Cisco Webex Messenger Service is used for meeting capabilities?
- A. Depending on the origin of the user, the Webex Meeting Center or local Cisco Unified Communications Manager meeting resources are used for meeting capabilities.
- B. Depending on the media flow, the Webex Meeting Center or local Cisco Unified CM meeting resources are used for meeting capabilities.
- C. Cisco Unified CM is always used for meeting capabilities.
- D. Cisco Webex Meeting Center is always used for meeting capabilities.
Answer: C
NEW QUESTION # 96
Which statement about scheduling Expressway backups is true?
- A. It is allowed from the application CLI and GUI of the Expressway.
- B. It is not supported on the application.
- C. It is allowed from the application GUI of the Expressway only.
- D. It is allowed from the application CLI of the Expressway only.
Answer: A
NEW QUESTION # 97
Refer to the exhibit. When Expressway-E routes a call with URI [email protected] to a DNS zone, which DNS server does the Expressway query for the SIP SRV records?
- A. 10.30.30.30
- B. 10.10.10.10
- C. 10.20.20.20
- D. 10.40.40.40
Answer: C
NEW QUESTION # 98 
Refer to the exhibit. If the Webex Teams device cannot connect to Video Mesh Cluster-1 because it is busy, which media node does the Webex Teams device connect to next?
- A. Video Mesh Cluster-2
- B. Both Cloud Node US-EAST and US-WEST
- C. Cloud Node US-WEST
- D. Cloud Node US-EAST
Answer: A
NEW QUESTION # 99
Which protocol and port are used for signaling between on-premises Cisco Webex Video Mesh Nodes and Cloud Media Services?
- A. standard SIP over TCP port 5060
- B. standard SIP TLS over TCP port 5061
- C. signaling over HTTPS TCP port 443
- D. signaling over TCP port 444
Answer: C
NEW QUESTION # 100
An administrator has been tasked to bulk entitle 200 existing users and ensure all future users are automatically configured for the Webex Hybrid Calendar Service. Which two options should be used to configure these users? (Choose two.)
- A. From Cisco Webex Control Hub, verify the domain that your Hybrid Calendar users will use, which
- B. On the Users tab in the Cisco Webex Control Hub, check the box next to each user who should be enabled, then click the toggle for the Hybrid Calendar service to turn it on.
- C. Select the Hybrid Services settings card in the Cisco Webex Control Hub and import a User Status report that contains only users to be enabled.
- D. Set up an Auto-Assign template that enables Hybrid Calendar.
- E. Export a CSV list of users in the Cisco Webex Control Hub, set the Hybrid Calendar Service to TRUE for users to be enabled, then import the file back to Manage Users menu in the Cisco Webex Control Hub.
Answer: A,E
Explanation:
automatically activates them for the service.
NEW QUESTION # 101
When designing the call control on a Cisco Expressway Core, which is the sequence of dial plan functions?
- A. search rules, zones, local zones
- B. DNS zone, local zone, search rules
- C. search rules, transforms
- D. transforms, CPL, user policy, search rules
Answer: C
Explanation:
Explanation
https://community.cisco.com/t5/collaboration-voice-and-video/vcs-dial-plan-example-configuration-to-avoid-int
NEW QUESTION # 102
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 SIP domains are added on Expressway Core.
- B. Ensure that the peer address does not match the Common Name on certificate.
- C. Ensure that the _cisco-uds SRV record has been configured.
- D. Ensure that the credential has been entered correctly.
Answer: D
NEW QUESTION # 103
Refer to the exhibit.
Which two numbers match the regular expression? (Choose two.)
- A. d209d165d200d224
- B. d20d16d20d22
- C. 0
- D. 1
- E. 2
Answer: C,E
NEW QUESTION # 104
Refer to the exhibit.
While troubleshooting Cisco Jabber login issues, there are some error messages. Why is the Jabber client unable to sign in?
- A. down Cisco Unified Communications Manager server
- B. incorrect login credentials
- C. service discovery issues
- D. XMPP bind failures
Answer: D
NEW QUESTION # 105
When designing the call control on a Cisco Expressway Core, which is the sequence of dial plan functions?
- A. search rules, zones, local zones
- B. DNS zone, local zone, search rules
- C. search rules, transforms
- D. transforms, CPL, user policy, search rules
Answer: C
NEW QUESTION # 106
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-D.
- D. The username [email protected] is invalid. The user should instead sign-in simply as jabberuser.
Answer: C
NEW QUESTION # 107
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Cisco 300-820 certification exam is challenging and requires a strong understanding of collaboration cloud and edge solutions. Candidates who pass the exam demonstrate their ability to work with Cisco collaboration technologies and are recognized as experts in collaboration solutions. Implementing Cisco Collaboration Cloud and Edge Solutions certification is widely recognized by employers and can help IT professionals advance their careers in the field of collaboration technologies. With the growing demand for collaboration solutions, the Cisco 300-820 certification is an excellent opportunity for IT professionals to demonstrate their expertise and enhance their career prospects.
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