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NEW QUESTION # 65
Cisco Collaboration endpoints are exchanging encrypted signaling messages.
What is one major complication in implementing NAT ALG for voice and video devices?
- A. NAT ALG introduces jitter in the voice path.
- B. Source addresses cannot provide the destination addresses that remote endpoints should use for return packets.
- C. Internal endpoints cannot use addresses from the private address space.
- D. The NAT ALG cannot inspect the contents of encrypted signaling messages.
Answer: D
NEW QUESTION # 66
Which service is available in a cloud-based deployment using Cisco Webex Messenger?
- A. Voicemail
- B. Presence
- C. Call forward services
- D. Phone services
Answer: B
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/spark/hybridservices/messageservice
NEW QUESTION # 67
Refer to the exhibit.
Refer to the exhibit. An engineer must configure a B2B traversal zone. Trusted certification authority and server certificates are uploaded to Cisco Expressway-C and Expressway-E servers. After the traversal zone configuration is completed in Expressway-C, the error message in the exhibit appears. What are the two reasons for the error? (Choose two.)
- A. The communication port is not set to 7001.
- B. The peer 1 address in Expressway-C is not the FADN of Expressway-E.
- C. The FQDN of Expressway-E cannot be resolved by the DNS server.
- D. The peer 1 address in Expressway-C must be replaced by the FQDN of Expressway-C.
- E. The traversal zone TLS verify subject name in Expressway-E does not match the FQDN of Expressway-C.
Answer: B,D
NEW QUESTION # 68
What allows endpoints behind a NAT to discover the paths through which they will pass media?
- A. ICE
- B. RTP
- C. SNMP
- D. TLS
Answer: A
Explanation:
https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html
NEW QUESTION # 69
Refer to the exhibit.
Which description of the transformation is true?
- A. It converts [email protected]:<port> to [email protected]
- B. It converts [email protected]:<port> to [email protected]
- C. It changes all patterns that begin with [email protected]:<port> to [email protected]
- D. It changes [email protected]:<port> to [email protected]
Answer: A
NEW QUESTION # 70
Within which cache timeline do the Webex App endpoints perform a STUN test to calculate round-trip delay time to available media node clusters?
- A. 6 hours
- B. 2 hours
- C. 4 hours
- D. 1 hour
Answer: A
NEW QUESTION # 71
Refer to the exhibit. A manager asks an engineer to create a CSV file for the HTTP allow list on the Expressway deployment. The engineer wrote the script shown and uploaded it to the Expressway, but it is not being accepted. Which action resolves the issue?
- A. Remove the line "https://myServer4/myPath4,allow,,,GET".
- B. Nothing is wrong, but the file type is most likely not XML.
- C. Add the command POST at the end on this line "http://myServer4/myPath4,block,,,POST".
- D. Remove the Method "PUT" from "http://myServer2:8000/myPath2,allow "my deployment", "an allow test", PUT".
Answer: A
NEW QUESTION # 72
Refer to the exhibit.
A new neighbor zone is added for a new Cisco Meeting Server, but the zone is showing a SIP status of failed from the time the zone it was created. What should be done to resolve this issue?
- A. The search rule must be changed to continue on match
- B. More bandwidth must be added to the appropriate pipes
- C. The existing zone using ID 7 must be deleted
- D. The underlying DNS issue must be resolved
Answer: A
NEW QUESTION # 73
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. The call is queued.
- B. Another node in the cluster is used and an intra-cluster cascade between the two Video Mesh nodes is formed.
- C. Another node in the cluster is used and an intra-cluster cascade between Webex and the new Video Mesh node is formed.
- D. The call fails.
Answer: B
Explanation:
If the node hosting the meeting reaches full capacity, another node in the cluster will be used and an intra-cluster cascade will be formed. (The intra-cluster cascade routes from node to node, not via Webex.)
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Collaboration/hybrid/12x/hybcvd/hms.html
NEW QUESTION # 74 
Refer to the exhibit. When a Jabber user attempts to connect from outside of the organization, the user enters the login information as "[email protected]" and receives the error "Cannot find your services Automatically".
The engineer tries to resolve SRV records used by Jabber.
DNS A record "expressway-e.example.com" points to the Expressway-E IP and "cucm.example.com" points to the Cisco Unified Communications Manager.
Which change resolves the DNS problem?
- A. Change the priority of the SRV record for cisco-uds.
- B. Change the collab-edge record to point to 5061.
- C. Change cisco-uds to point to the Expressway-E FQDN.
- D. Remove the cisco-uds SRV record for the external DNS.
Answer: D
NEW QUESTION # 75
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. Both Cloud Node US-EAST and US-WEST
- B. Video Mesh Cluster-2
- C. Cloud Node US-EAST
- D. Cloud Node US-WEST
Answer: B
Explanation:
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/wbxt/videomesh/cmgt_ b_webex-video-mesh-deployment-guide/cmgt_b_hybrid-media-deployment- guide_chapter_010.html
"Which cluster is used also depends on latency rather than just location. For example, a cloud cluster with lower STUN round-trip (SRT) delay than a Webex Video Mesh cluster may be a better candidate for the meeting. This logic prevents a user from landing on a geographically far cluster with a high SRT delay".
NEW QUESTION # 76
Which two items are configured when deploying a B2B collaboration solution? (Choose two.)
- A. search rules in Cisco Expressway-E
- B. SIP trunk between Cisco Unified Communications Manager and Cisco Expressway-C
- C. SIP trunk between Cisco Unified Communications Manager and Cisco Expressway-E
- D. traversal client on a Cisco Expressway-E
- E. DNS zone on a Cisco Expressway-C
Answer: A,B
NEW QUESTION # 77
Refer to the exhibit.
Calls to locally registered endpoints are failing. At present, there are two endpoints registered locally to this Expressway. An H.323 endpoint with an alias of "EndpointA" is registered, and a SIP endpoint with an alias of "[email protected]" is also registered. How is this issue resolved?
- A. The calls are failing because there are insufficient licenses. Additional licenses must be installed for the Expressway to route these calls.
- B. The dialplan must be redesigned to use the transforms to convert the alias into SIP URI format and then use separate search rules for each format that needs to be dialed within the local zone.
- C. The current search rule does not match the call, so the search rule must be modified to include a SIP Variant of "Standards-Based".
- D. Calling parties are placing calls with the wrong domain. End-users must be instructed not to use the
Answer: B
Explanation:
pod1.local domain as that is owned by the local system. Calls to any other domain would work.
NEW QUESTION # 78
Which two licenses are required for the B2B feature to work? (Choose two.)
- A. Device Provisioning
- B. Traversal Server
- C. Rich Media Sessions
- D. TURN Relays
- E. Advanced Networking
Answer: B,C
NEW QUESTION # 79
The Cisco Webex Hybrid Message service is deployed geographically for separate Cisco Unified IM and Presence clusters. What must be configured in the Cisco Webex Control Hub to achieve this deployment?
- A. distributed DNS
- B. geo-locations
- C. resource groups
- D. verified domains
Answer: C
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/spark/hybridservices/ messageservice/cmgt_b_spark-hybrid-message-deployment-guide/cmgt_b_spark-hybrid-messagedeployment-guide_chapter_00.html
NEW QUESTION # 80
Drag and drop the required SAN field items from the left onto the features within the server categories on the right.
Answer:
Explanation:
NEW QUESTION # 81
Which service is available in a cloud-based deployment using Cisco Webex Messenger?
- A. Voicemail
- B. Presence
- C. Call forward services
- D. Phone services
Answer: B
Explanation:
The following services are available in a cloud-based deployment using Webex Messenger:
- Contact Source
- Presence
- Instant Messaging
- Conferencing
NEW QUESTION # 82
A video device registered with Cisco UCM failed to make an outbound B2B call. From Expressway-C diagnostic logs, an engineer found that the destination pattern is
"[email protected]:5061", and the call was dropped with a 404 response code from Expressway-C. The search rule intended for this call-in Expressway-C is configured for Alias Pattern Match, Pattern type "Suffix," and Pattern "example.com". How must the configuration be changed to allow the call?
- A. Create a transform on Expressway-C to strip port numbers.
- B. Update the route pattern in Cisco UCM to send calls to "example.com" to the correct port.
- C. Update the call policy list in Expressway-C to allow calls to "example.com".
- D. Create a call policy rule on Expressway-E to allow calls to port 5061.
Answer: A
NEW QUESTION # 83
Which method is used to send the incoming call request to the client when the traversal server receives an incoming call for the traversal client?
- A. Requesting for permission from the firewall
- B. Opening an inbound connection directly to the client through the firewall
- C. Using an existing keep-alive connection opened by the client
- D. Opening an outbound connection directly to the client through the firewall
Answer: C
NEW QUESTION # 84
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 ta ExpE.example.com on port 5061
- C. SRV record _collab-edge._tls.example.com that resolves to ExpE.example.com on port 8443
- D. SRV record _cisco-uds._tcp.example.com that resolves to ExpE.example.com on port 5061
Answer: C
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 # 85
Refer to the exhibit.
Refer to the exhibit. Logins and failing via mobile and remote access. How is this resolved?
- A. No Cisco UCM servers are configured in the Expressway-C. Servers must be added for CallManager and IM and Presence services.
- B. SIP is disabled on the Expressway-E. The SIP protocol must be enabled on the server.
- C. Although a traversal client zone exists, there is no Unified Communications traversal client zone. One must be created.
- D. Mobile and remote access login has not been enabled for the domain configured in the Expressway-C. The domain must be edited to allow Cisco UCM registrations.
Answer: C
NEW QUESTION # 86
In Cisco Expressway, which information from an incoming search request does the pre-search transform configuration allow to be modified?
- A. called address
- B. calling party
- C. Source IP address
- D. CUD
Answer: A
NEW QUESTION # 87
Refer to the exhibit.
Refer to the exhibit. Call policy rules on an Expressway-E prevent external callers from the internet from calling a VIP whose URI is [email protected]. Which additional configuration setting is required for this call policy to function as intended?
- A. The Cisco TelePresence endpoint registered with the URI [email protected] must be set in *do not disturb" mode.
- B. SIP TLS must be disabled on the Expressway-E.
- C. A search rule must be configured with an extract match forvip^cisco.com to pass the call to the Expressway-C.
- D. The default zone on the Expressway-E must not be configured to treat as authenticated.
Answer: D
NEW QUESTION # 88
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Cisco 300-820 is an exam that tests the candidate's knowledge of implementing Cisco Collaboration Cloud and Edge Solutions. 300-820 exam is intended for those candidates who want to demonstrate their expertise in configuring, deploying, and troubleshooting Cisco Collaboration Cloud and Edge Solutions. 300-820 exam measures the candidate's skills in implementing Cisco Webex Hybrid Services, Cisco Unified IM and Presence, Cisco Expressway, and Cisco Cloud Messaging.
Cisco 300-820 is an experienced level exam that measures the ability of a candidate to implement Cisco Collaboration Cloud and Edge Solutions. 300-820 exam is designed to test the knowledge and skills required to install, configure, and manage cloud and edge solutions for collaboration.
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