300-820 Study Guide Brilliant 300-820 Exam Dumps PDF
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NEW QUESTION # 19
An administrator has been asked to configure Video Mesh signaling traffic to route through a proxy.
Which is an available proxy type in the Video Mesh node configuration to support this deployment model?
- A. Transparent Explicit Proxy
- B. Distorting Proxy
- C. Reverse Proxy
- D. Transparent Inspecting Proxy
Answer: D
NEW QUESTION # 20
What is one of the user-related prerequisites for Jabber Team Messaging Mode Installation?
- A. Create user accounts in Cisco Unified CM and Cisco Webex Control Hub.
- B. Create user accounts in Cisco Unified Communications Manager only.
- C. Create user accounts in Cisco Webex Control Hub only.
- D. Create user accounts in Cisco Unified IM and Presence.
Answer: C
NEW QUESTION # 21
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. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.
- C. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
- D. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
Answer: B
NEW QUESTION # 22
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 collab-edge record to point to 5061.
- B. Change cisco-uds to point to the Expressway-E FQDN.
- C. Remove the cisco-uds SRV record for the external DNS.
- D. Change the priority of the SRV record for cisco-uds.
Answer: C
NEW QUESTION # 23
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 credential has been entered correctly.
- 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 SIP domains are added on Expressway Core.
Answer: A
NEW QUESTION # 24 
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 fails.
- B. The call is queued.
- C. Another node in the cluster is used and an intra-cluster cascade between Webex and the new Video Mesh node is formed.
- D. Another node in the cluster is used and an intra-cluster cascade between the two Video Mesh nodes is formed.
Answer: C
NEW QUESTION # 25
Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?
- A. connection
- B. name
- C. version
- D. bandwidth
Answer: A
Explanation:
c-line shows the connection information, Media IP address.
NEW QUESTION # 26
Which two statements about Expressway media traversal are true? (Choose two.)
- A. Expressway Control is the traversal server installed in the DMZ.
- B. The Unified Communications traversal zone can be used for Mobile and Remote Access.
- C. Cisco Unified Communications Manager zone can be either traversal server or client.
- D. Both Expressway Edge interfaces can be NATed.
- E. The Expressway Edge must be put in a firewall DMZ segment.
Answer: B,E
NEW QUESTION # 27
Refer to the exhibit.
When configuring a search rule that routes calls to a zone, what occurs when 13358 is dialed?
- A. 13358 is sent directly 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 replaced by 135, and then is sent to the traversal zone.
Answer: D
NEW QUESTION # 28
Which connection does the traversal zone configuration define?
- A. Cisco UCS E-Series and Cisco UCM
- B. Expressway-E and Collaboration Endpoints
- C. Cisco Expressway-C and Cisco Expressway-E platforms
- D. Cisco UC and Cisco Unified Presence Server
Answer: C
NEW QUESTION # 29
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 domain of SIP endpoint A to cisco.com.
- C. Create a presearch transform.
- D. Change the interworking mode to On.
Answer: D
NEW QUESTION # 30
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 Lookup Service working across all of your IM and Presence clusters.
- B. Your IM and Presence Service clusters must have Multiple Device Messaging disabled.
- C. AXL service should be activated only on the publisher of each IM and Presence cluster.
- 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 # 31
Cisco Jabber clients are failing to log in using Mobile and Remote Access. The administrator checked the Jabber problem report logs and saw that connections to the Expressway-E are being refused on TCP port 8443. From a packet capture run on the Jabber client while attempting to log in, there is no response to the TCP SYN packets sent to the Expressway-E by Jabber.
Which two reasons are causing the Expressway-E to be unreachable on port 8443 from the internet? (Choose two.)
- A. The Unified Communications zone is down.
- B. The Jabber clients using an outdated version.
- C. The SRV record for _cisco-uds is misconfigured.
- D. The firewall is blocking the port.
- E. The certificate for Jabber is expired.
Answer: A,D
Explanation:
Traffic is coming from the internet so can not be the cisco_uds record, as it is created on the internal DNS only. Collab_edge is the external DNS record. It has to be port blocked or traversal zone down.
https://www.cisco.com/c/en/us/support/docs/unified-communications/expressway/118798- technote-cucm-00.html#anc6
NEW QUESTION # 32
How are Cisco Webex Video Mesh deployments supported?
- A. Clustering Video Mesh Nodes over the WAN are supported if Round Trip Time is low.
- B. Video Mesh Dual NIC are supported in demilitarized deployments.
- C. Mixed Single NIC and Dual NIC are supported in the same data center deployments.
- D. IPv6 and IPv4 deployments are supported for Video Mesh clusters.
Answer: B
NEW QUESTION # 33
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: B
NEW QUESTION # 34
Which role does Call Policy play when preventing toll fraud on Expressways?
- A. It controls which calls are allowed, which calls are rejected, and which calls are redirected to a different destination.
- B. It changes the audio codec used in a call through Expressways.
- C. It changes the calling and called number on a call.
- D. It changes the audio protocol used by a call through Expressways.
Answer: A
Explanation:
Explanation/Reference:
NEW QUESTION # 35
What are two reasons why port 8443 is unreachable from the Internet to the Expressway-E? (Choose two.)
- A. The Unified Communications zone is down.
- B. Transform is not configured on Expressway-E.
- C. The MRA license is missing on the Expressway-E.
- D. The SRV record for _cisco-uds is misconfigured.
- E. The firewall is blocking the port.
Answer: A,E
NEW QUESTION # 36
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 domain of SIP endpoint A to cisco.com.
- C. Create a presearch transform.
- D. Change the interworking mode to On.
Answer: D
NEW QUESTION # 37
A call is sent by Cisco UCM to Expressway with a URI of [email protected]. If (7508...) @expc1a\.pod8\.test\.lab.* is the pattern string, what would be the replacement string of the transform in Expressway to re-write the call so that it becomes
[email protected]?
- A. \[email protected]\.test\.lab
- B. \1@conf\.pod8\.test\lab.*
- C. \1@conf\.pod8.test.lab.@
- D. \1@conf\.pod8\.test.lab.!
Answer: A
NEW QUESTION # 38
Refer to the exhibit. Logins and failing via mobile and remote access. How is this resolved?
- A. SIP is disabled on the Expressway-E. The SIP protocol must be enabled on the server.
- B. No Cisco UCM servers are configured in the Expressway-C. Servers must be added for CallManager and IM and Presence services.
- C. 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.
- D. Although a traversal client zone exists, there is no Unified Communications traversal client zone. One must be created.
Answer: B
NEW QUESTION # 39
Refer to the exhibit. When configuring a search rule that routes calls to a zone, what occurs when
13358 is dialed?
- A. 13358 is sent directly 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 replaced by 135, and then is sent to the traversal zone.
Answer: D
NEW QUESTION # 40
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. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.
- C. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
- D. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
Answer: B
NEW QUESTION # 41
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Passing the Cisco 300-820 exam is a great way for IT professionals to demonstrate their expertise in collaboration solutions that are based on Cisco cloud and edge technologies. Implementing Cisco Collaboration Cloud and Edge Solutions certification can help them advance their careers and open up new opportunities in the field of collaboration technology. It can also help organizations ensure that their IT staff has the necessary skills and knowledge to implement and manage complex collaboration solutions.
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