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NEW QUESTION 1
Cisco Collaboration endpoints are exchanging encrypted signaling messages.
What is one major complication in implementing NAT ALG for voice and video devices?

  • A. Internal endpoints cannot use addresses from the private address space.
  • B. The NAT ALG cannot inspect the contents of encrypted signaling messages.
  • C. NAT ALG introduces jitter in the voice path.
  • D. Source addresses cannot provide the destination addresses that remote endpoints should use for return packets.

Answer: B

NEW QUESTION 2
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 3
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 calling and called number on a call.
  • C. It changes the audio protocol used by a call through Expressways.
  • D. It changes the audio codec used in a call through Expressways.

Answer: A

NEW QUESTION 4
Which two items are configured when deploying a B2B collaboration solution? (Choose two.)

  • A. SIP trunk between Cisco Unified Communications Manager and Cisco Expressway-C
  • B. search rules in Cisco Expressway-E
  • 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: AB

NEW QUESTION 5
300-820 dumps exhibit
Refer to the exhibit. Which description of the transformation is true?

  • A. It converts 4123@exp-name.exp.domain:<port> to 4123@exp.domain
  • B. It changes all patterns that begin with 4123@exp-name.exp.domain:<port> to 1@exp.domain
  • C. It changes 413@exp-name.exp.domain:<port> to 413@exp.domain
  • D. It converts 4.3@exp-name.exp.domain:<port> to 1@exp.domain

Answer: A

NEW QUESTION 6
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 7
In a Mobile and Remote Access deployment, where must communications be encrypted with TLS?

  • A. Cisco Expressway-E and endpoints outside the enterprise
  • B. Cisco Expressway-C, Cisco Unified Communications Manager, and IM&P
  • C. Cisco Expressway-C, Cisco Expressway-E, and Cisco Unified Communications Manager
  • D. Cisco Expressway-C, Cisco Expressway-E, and endpoints outside the enterprise

Answer: A

NEW QUESTION 8
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 9
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 10
Which zone is required between Expressway-E and Expressway-C in Mobile and Remote Access deployments?

  • A. Unified Communications traversal zone
  • B. neighbor zone
  • C. DNS zone
  • D. traversal zone

Answer: A

NEW QUESTION 11
Where are voice calls handled in a Cisco Jabber hybrid cloud-based deployment with Cisco Webex Platform Service?

  • A. Voice calls use Webex Calling platform for call control and use hybrid media nodes for local conferencing.
  • B. Voice calls use local media nodes to keep traffic internal for internal traffic and use Webex Calling for external calls.
  • C. Voice call use Cisco Unified Communications Manager for local calls and Webex Calling for external calls.
  • D. Voice calls use local Cisco Unified Communications Manager for all calls.

Answer: D

NEW QUESTION 12
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. Rich Media Session licenses are not activated on Expressway-E.
  • B. Expressway-E is listening on the wrong IP interface.
  • C. The destination port for Expressway-E is set to 7400 instead of 8443 on the Expressway-C.
  • D. The XCP Service is not activated on Expressway-E.

Answer: B

NEW QUESTION 13
Which step is taken when configuring a Cisco Expressway solution?

  • A. Configure the Expressway-E by using a non-traversal server zone.
  • B. Enable static NAT on the Expressway-E only.
  • C. Disable H.323 mode on the Expressway-E.
  • D. Enable H.323 H.460.19 demultiplexing mode on the Expressway-C.

Answer: B

NEW QUESTION 14
Which two statements about Expressway media traversal are true? (Choose two.)

  • A. Expressway Control is the traversal server installed in the DMZ.
  • 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. The Unified Communications traversal zone can be used for Mobile and Remote Access.
  • E. Both Expressway Edge interfaces can be NATed.

Answer: BD

NEW QUESTION 15
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 Sync Agent working across your IM and Presence clusters.
  • B. You must have the Intercluster Lookup Service working across all of your IM and Presence clusters.
  • C. Your IM and Presence Service clusters must have Multiple Device Messaging disabled.
  • D. AXL service should be activated only on the publisher of each IM and Presence cluster.

Answer: A

NEW QUESTION 16
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 17
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 18
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 19
Which two statements about Mobile and Remote Access certificate are true? (Choose two.)

  • A. Expressway Core can use private CA signed certificate.
  • B. You must upload the root certificates in the phone trust store.
  • C. Expressway must generate certificate signing request.
  • D. Expressway Edge must use public CA signed certificate.
  • E. The Jabber client can work with public or private CA signed certificate.

Answer: CD

NEW QUESTION 20
A company is installing Cisco Collaboration infrastructure and one of the requirements is that they must be able to communicate with many external parties that are using H.323 and SIP. Internally they want to register the endpoints only on SIP. Which functionality would describe the feature that needs to be enabled and where to achieve this?

  • A. Interworking in Expressway-C
  • B. Transcoding in Cisco Unified Communications Manager
  • C. Transcoding in Expressway-C
  • D. Interworking in Cisco Unified Communications Manager

Answer: B

NEW QUESTION 21
Refer to the exhibit. What is the result of a transformation applied to alias 88514?

  • A. 98851@ccnpcollab.com
  • B. 88513@ccnpcollab com
  • C. 88514@ccnpcollab.com
  • D. 88515@ccnpcollab.com

Answer: A

NEW QUESTION 22
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 23
Which two statements about Cisco Webex Video Mesh Nodes are true? (Choose two.)

  • A. When Expressway Core works with VMN clusters, Expressway Core decides which VMN is used for signaling/media connection.
  • B. Cloud-registered devices choose a VMN cluster based on the lowest STUN round trip delay.
  • C. The cascading traffic between VMN must bypass the firewall.
  • D. When Cisco Unified Communications Manager works with multiple VMNs, Cisco Unified CM decides which VMN is used for signaling connection.
  • E. A VMN can terminate a media connection while operating in maintenance mode.

Answer: BD

NEW QUESTION 24
300-820 dumps exhibit
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 25
......

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