300-820 | How Many Questions Of 300-820 Test Engine

NEW QUESTION 1
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. Cisco Unified Communications Manager server certificate
• C. Expressway-E server certificate
• D. Expressway-C and Expressway-E server certificate

Answer: C

NEW QUESTION 2
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. The video call is using encryption, which is not supported by ICE with CUCM 12.5
• B. ICE cannot reduce the packet loss on the link
• C. A STUN cannot punch holes in the firewall
• D. The video call is using 4K resolution, which is not supported by ICE with CUCM 12.5

Answer: A

NEW QUESTION 3

Refer to the exhibit. Which two numbers match the regular expression? (Choose two.)

• A. d20d16d20d22
• B. 2091652010224
• C. 209165200225
• D. d209d165d200d224
• E. 209165200224

Answer: CE

NEW QUESTION 4
Which two licenses are required for the B2B feature to work? (Choose two.)

• A. Traversal Server
• B. TURN Relays
• C. Rich Media Sessions
• D. Advanced Networking
• E. Device Provisioning

Answer: CE

NEW QUESTION 5
A Cisco Webex Hybrid Video Mesh Node can be installed in the DMZ and on the internal network.
Which statement is true?

• A. Webex Cloud supports either a DMZ-based Mesh Node for security or an internal-based Mesh Node for media control only.
• B. Installing a Video Mesh Node in the DMZ requires you to open TCP and UDP port 4444 in your internal firewall for full clustering functionality.
• C. Installing a Video Mesh Node in the DMZ requires the external firewall to allow UDP traffic from ANY port to the address of the Video Mesh Nodes via port 5004.
• D. Using internal Video Mesh Node also works due to Mobile and Remote Access setup for Webex Teams client
• E. A DMZ node is added for extra security.

Answer: C

NEW QUESTION 6
What happens to the encrypted signaling traffic of a collaboration device if you place it inside a firewall with private IP addresses and try to make a call over IP without any collaboration infrastructure?

• A. The signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.
• B. Encrypted IP traffic for collaboration devices always is trusted by the firewall.
• C. The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.
• D. The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.

Answer: B

NEW QUESTION 7
Which statement about scheduling Expressway backups is true?

• A. It is not supported on the application.
• B. It is allowed from the application CLI of the Expressway only.
• C. It is allowed from the application CLI and GUI of the Expressway.
• D. It is allowed from the application GUI of the Expressway only.

Answer: C

NEW QUESTION 8
Which entry in the public (external) DNS is valid to configure DNS SRV records for a Cisco Mobile and Remote Access solution?

• A. _cisco-uds._tcp.<domain>
• B. _cisco-mra._tls.<domain>
• C. _collab-edge._tls.<domain>
• D. _cisco-expwy._tls.<domain>

Answer: A

NEW QUESTION 9
What is the Cisco-recommended key length in bits for a Cisco Expressway certificate?

• A. 1024
• B. 2048
• C. 4096
• D. 8192

Answer: C

NEW QUESTION 10
With QoS enabled, which two statements about the Cisco Webex Video Mesh Node signaling and media traffic are true? (Choose two.)

• A. From VMN to CUCM SIP endpoints, the source UDP ports from 52500 to 62999 is used for audio traffic.
• B. From VMN to Webex Teams clients, the source UDP port 5004 is used for video traffic.
• C. From Webex cloud to VMN, the source UDP port 9000 is used for audio traffic.
• D. From VMN to video endpoints, the destination UDP port 5004 is used for audio traffic.
• E. From VMN to Webex cloud, the destination UDP port 9000 is used for video traffic.

Answer: AB

NEW QUESTION 11
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 local 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 traversal zone.
• D. 13358 is sent directly to the traversal zone.

Answer: C

NEW QUESTION 12
What it is the purpose of using ICE for Mobile and Remote Access endpoints in the Cisco Collaboration infrastructure?

• A. ICE controls the bandwidth usage for Cisco Collaboration endpoints if the endpoints are located outside the company network.
• B. ICE enables Cisco Collaboration endpoints to determine if there is direct connectivity between them.
• C. ICE uses FAST updates to optimize the video quality in case of packet los
• D. This technology is available only from Cisco Unified CM version 11.5 and later.
• E. ICE enablement allows for the Cisco Collaboration endpoint to register through Expressway servers to Cisco Unified Communications Manager behind a firewall.

Answer: B

NEW QUESTION 13
Which service is available in a cloud-based deployment using Cisco Webex Messenger?

• A. Presence
• B. Phone services
• C. Voicemail
• D. Call forward services

Answer: A

NEW QUESTION 14
An Expressway-E is configured using a single NIC with NAT.
How must the Expressway-C traversal client zone be configured to connect to the Expressway-E?

• A. TLS verify must be enabled.
• B. The zone profile must be set to default.
• C. The peer address must be the Expressway-E NAT address.
• D. The peer address must be the Expressway-E LAN 1 IP address.

Answer: C

NEW QUESTION 15
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. The call is queued.
• C. The call fails.
• D. Another node in the cluster is used and an intra-cluster cascade between Webex and the new Video Mesh node is formed.

Answer: D

NEW QUESTION 16
Which statement about the Cisco Webex hybrid service is true?

• A. Expressway Connector is required for an on-premises Exchange server.
• B. Hybrid Message service works only with Jabber cloud deployment.
• C. Directory Connector is required for Azure AD.
• D. Directory Connector must be deployed for OBTP to work with on-premises video devices.

Answer: D

NEW QUESTION 17
Which mode should be used when Call Policy is configured on Expressways?

• A. extended CPL
• B. local CPL, policy service, and off
• C. on
• D. remote CPL

Answer: C

NEW QUESTION 18
An organization wants to enable a Cisco Webex connector to synchronize all employees automatically with Cisco Webex instead of using a manual list. Where is the Webex Hybrid Directory Service configured?

• A. Install Cisco Directory Connector on a Microsoft Windows Domain server and configure the software and Webex Control Hub.
• B. Enable the directory service in Cisco Unified Communications Manager under Cisco Unified Serviceability and add the service in Webex Control Hub.
• C. Enable the directory service on Cisco Expressway Edge for Office 365 or Cisco Expressway Core for internal Active Directory and add the service in Webex Control Hub.
• D. Install the Cisco Express Connector and configure the device in Cisco Unified Communications Manager under Cisco Unified Serviceability and add the service in Webex Control Hub.

Answer: A

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. Transparent Inspecting Proxy
• C. Reverse Proxy
• D. Distorting Proxy

Answer: B

NEW QUESTION 20
When deploying an Expressway Core and Expressway Edge cluster for mobile and remote access, which TLS verity subject name must be configured on the Expressway-E UC traversal zone?

• A. Webex CUSP Cluster Name
• B. Expressway-E Cluster Name
• C. Cisco Unified Communications Manager Publisher FQDN
• D. Expressway-C Cluster Name

Answer: B

NEW QUESTION 21
An organization with a domain name of example.com.
Which two SRV records are valid for a SIP and H.323 communication? (Choose two.)

• A. _sips._tcp.example.com
• B. _sips._udp.example.com
• C. _h323ls._udp.example com
• D. _h323ls._tcp.example.com
• E. _collab-edge._tls.example.com

Answer: AC

NEW QUESTION 22
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