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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.
Cisco 300-820 exam covers various topics, including Cisco Expressway, Mobile and Remote Access, Cisco Webex Teams, Cisco Cloud, and Cisco Webex Meetings. 300-820 exam comprises 60-70 questions that test the candidate's understanding of Cisco Collaboration Cloud and Edge Solutions. Passing 300-820 exam demonstrates the candidate's skills in implementing and troubleshooting Cisco Collaboration Cloud and Edge Solutions, making them a valuable asset to any organization that utilizes these solutions.
Cisco 300-820 exam is conducted in a proctored environment, where the candidates must answer 60-70 questions within the stipulated time frame. A passing grade is achieved by the candidate who scores 825 out of 1000. It is essential to take time to study and prepare for the exam to ensure that the candidates pass and achieve the certification with ease.
NEW QUESTION # 66
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
Answer: A
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/exwy_b_mra-expressw
NEW QUESTION # 67
When external video endpoints are called via a DNS zone, which dialing method requires DNS to be configured in the Expressway server?
- A. E.164
- B. IP dialing
- C. DN dialing
- D. URI dialing
Answer: D
NEW QUESTION # 68
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 # 69
Which two options should be used to create a secure traversal zone between the Expressway-C and Expressway-E? (Choose two.)
- A. Expressway-C and Expressway-E must trust each other's server certificate.
- B. Create a set of username and password on each of the Expressway-C and Expressway-E to authenticate the neighboring peer.
- C. Enable username and password authentication verification on Expressway-E.
- D. A separate pair of traversal zones must be configured if an H.323 connection is required and Interworking is disabled.
- E. One Cisco Unified Communications traversal zone for H.323 and SIP connections.
Answer: A,D
NEW QUESTION # 70
When deploying an Expressway Core and Expressway Edge cluster for mobile and remote access, which TLS verify subject name must be configured on the Expressway-E UC traversal zone?
- A. Expressway-C Cluster Name
- B. Expressway-E Cluster Name
- C. Cisco Unified Communications Manager Publisher FQDN
- D. Webex CUSP Cluster Name
Answer: A
NEW QUESTION # 71
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. Expressway-E is listening on the wrong IP interface.
- B. The destination port for Expressway-E is set to 7400 instead of 8443 on the Expressway-C.
- C. The XCP Service is not activated on Expressway-E.
- D. Rich Media Session licenses are not activated on Expressway-E.
Answer: A
Explanation:
https://www.cisco.com/c/en/us/support/docs/unified-communications/expressway/118798- technote-cucm-00.html#anc6
NEW QUESTION # 72
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. Disable SIP in the external zone.
- B. Change the interworking mode to On.
- C. Create a presearch transform.
- D. Change the domain of SIP endpoint A to cisco.com.
Answer: B
NEW QUESTION # 73
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. Add a server certificate to the Expressway-C that is signed by a certificate authority.
- B. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
- C. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
- D. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.
Answer: D
NEW QUESTION # 74
Refer to the exhibit.
Cisco Unified Communications Manager routes the call via the Webex Meetings route list and route group to the Video Mesh cluster Node#1 in the Video Mesh cluster is hosting the meeting and has reached full capacity, but other nodes in the cluster still have spare capacity.
What happens to the participant's call?
- A. Another node in the cluster is used and an intra-cluster cascade between the two Video Mesh nodes is formed.
- B. Another node in the cluster is used and an intra-cluster cascade between Webex and the new Video Mesh node is formed.
- C. The call fails.
- D. The call is queued.
Answer: B
NEW QUESTION # 75
Which action is required when using Cisco Jabber for Cloud with Cisco Webex Messenger?
- A. Configure policies.
- B. Configure, extend, and connect.
- C. Configure desk phone control.
- D. Configure service discovery for remote access.
Answer: D
NEW QUESTION # 76
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 _cisco-uds._tcp.example.com that resolves to ExpC.example.com on port 8443
- B. SRV record _collab-edge._tls.example.com that resolves to ExpE.example.com on port 8443
- C. SRV record _cisco-uds._tcp.example.com that resolves to ExpE.example.com on port 5061
- D. SRV record _collab-edge._tls.example.com that resolves ta ExpE.example.com on port 5061
Answer: B
Explanation:
To allow external clients to discover the Expressway-E server, the administrator must configure the SRV record _collab-edge._tls.example.com that resolves to ExpE.example.com on port 8443.
This SRV record is used for Mobile and Remote Access to allow external clients to connect securely to the Expressway-E server. The _collab-edge._tls prefix is used to identify the service as a "collaboration edge" service and the .example.com suffix is the domain name for the organization. Port 8443 is the default port used for secure HTTPS connections to the Expressway-E server.
NEW QUESTION # 77
Refer to the exhibit.
What is the result of a transformation applied to alias 88514?
- A. 88513@ccnpcollab com
- B. [email protected]
- C. [email protected]
- D. [email protected]
Answer: D
NEW QUESTION # 78
An employee has recently left an organization and a manager suspects that this employee may have made changes to the system that no one is aware of. Mobile and Remote Access registration is not working. Internal communications appear to be working, but no external system is able to register or call anywhere. While investigating this problem, it is discovered that no internal systems are able to call externally either. What is the TraversalZone missing that is causing this issue?
- A. route pattern to the DefaultZone
- B. SIP trunk to the DefaultZone
- C. pipe to the DefaultZone
- D. link to the DefaultZone
Answer: D
NEW QUESTION # 79
Which statement about scheduling Expressway backups is true?
- A. It is allowed from the application CLI of the Expressway only.
- B. It is allowed from the application GUI of the Expressway only.
- C. It is not supported on the application.
- D. It is allowed from the application CLI and GUI of the Expressway.
Answer: C
NEW QUESTION # 80
Refer to the exhibit.
Which inbound connection should an administrator configure on the outside firewall?
- A. Media: UDP 36000 to 36011
- B. SIP TCP 5061
- C. XMPP TCP 5222
- D. HTTPS (tunneled over SSH between C and E): TCP 2222
Answer: A
NEW QUESTION # 81
A company has enabled ICE to optimize call flows and improve video quality between their Cisco Collaboration endpoints internally and externally.
For which reason would you see activity on the TURN server when a call is established between two external endpoints?
- A. ICE cannot reduce the packet loss on the link
- B. The video call is using 4K resolution, which is not supported by ICE with CUCM 12.5
- C. The video call is using encryption, which is not supported by ICE with CUCM 12.5
- D. A STUN cannot punch holes in the firewall
Answer: C
Explanation:
Explanation/Reference:
NEW QUESTION # 82
An engineer must configure the zone to connect to an Expressway-E using Single NIC with NAT.
The internal IP address is 192.168.10.63, and the NAT address is 203.0.113.5. What must the engineer configure on the Expressway-C to meet this requirement?
- A. traversal zone with the peer address 192.168.10.63
- B. neighbor zone with the peer address 192.168.10.63
- C. neighbor zone with the peer address of 203.0.113.5
- D. traversal zone with the peer address of 203.0.113.5
Answer: A
NEW QUESTION # 83
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 # 84
Which connection does the traversal zone configuration define?
- A. Expressway-E and Collaboration Endpoints
- B. Cisco UC and Cisco Unified Presence Server
- C. Cisco UCS E-Series and Cisco UCM
- D. Cisco Expressway-C and Cisco Expressway-E platforms
Answer: D
NEW QUESTION # 85
An engineer wants to configure a zone on the Expressway-E to receive communications from the Expressway-C in order to allow inbound and outbound calls. How is the peer address configured on the Expressway-C when Expressway-E has only one NIC enabled and is using static NAT mode?
- A. Cisco UCM FQDN
- B. Cisco UCM DHCP
- C. Expressway-E DHCP
- D. Expressway-E FQDN
Answer: D
NEW QUESTION # 86
An engineer configures a Cisco Collaboration environment to use Mobile and Remote Access for external access for company users. The engineer uses OAuth with refresh on the Cisco UCM SIP lines for extra security and improved user experience. During the setup, Mobile and Remote Access does not work, it is enabled on the Cisco UCM and Cisco Expressways. SIP trunks on ports 5090 and 5091 are configured to avoid conflicts with other SIP trunks between internal Cisco UCM clusters. The traversal zone also uses port 6500. The traversal zone between Expressways shows no errors, and the requests hit Expressway-E from the Internet. What is the reason that the solution does not work?
- A. Mobile and Remote Access does not support OAuth with refresh with this configuration,
- B. The default port for Mobile and Remote Access is 6500, which creates a conflict with the existing traversal zone port.
- C. The default port for Mobile and Remote Access is 6001. Therefore, the traversal port must be port
6001 for Mobile and Remote Access to work. - D. The default port for Mobile and Remote Access is 5091, which creates a conflict with the existing SIP trunks.
Answer: D
NEW QUESTION # 87
When determining why Mobile and Remote Access to Cisco TelePresence equipment does not work anymore for an organization. There are several administrators and configuration changes could have happened without anyone knowing. Internal communication seems to be working, but no external system can register or call anywhere. Gathering symptoms, you also discover that no internal systems can call out either.
What is TraversalZone missing that causes this issue?
- A. route pattern to the DefaultZone
- B. SIP trunk to the DefaultZone
- C. pipe to the DefaultZone
- D. link to the DefaultZone
Answer: D
NEW QUESTION # 88
Which service is available in a cloud-based deployment using Cisco Webex Messenger?
- A. Call forward services
- B. Presence
- C. Phone services
- D. Voicemail
Answer: B
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/spark/hybridservices/messageservice
NEW QUESTION # 89
When an Expressway-E is configured for static NAT, which Session Description Protocol attribute is modified to reflect the NAT address?
- A. SDP m-line
- B. SDP b-line
- C. SIP record route
- D. SDP c-line
Answer: C
NEW QUESTION # 90
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