Cisco CCNP 300-820 Questions & Answers

• Question 1:

  DRAG DROP

  Drag and drop the services from the left onto their descriptions on the right. Some services are used more than once.

  Select and Place:

  

  Correct Answer:

  

• Question 2:

  DRAG DROP

  Drag and drop the required SAN field items from the left onto the features within the server categories on the right.

  Select and Place:

  

  Correct Answer:

  

• Question 3:

  Cisco Collaboration deployment has video endpoints that can do B2B calls over the internet, but they also can make audio calls through a gateway. This ability means that someone from the internet can make fraud calls through the system. Which action must an engineer take to set up the search rules for calls that are being headed to the PSTN gateway?

  A. Ensure that only requests that are authenticated are allowed to make a PSTN call.

  B. Avoid using any wild card in the source settings in the search rules.

  C. Add registered devices only in the search rule for the PSTN gateway.

  D. Add registered devices only in the zone for the PSTN gateway.

  Correct Answer: B

  https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/admin_guide/X14-0/exwy_b_cisco-expressway-administrator- guide/exwy_m_dial-plan-and-call-processing.html

• Question 4:

  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. traversal zone with the peer address of 203.0.113.5

  D. neighbor zone with the peer address of 203.0.113.5

  Correct Answer: C

  Note - You must enter the FQDN of the Expressway-E, as it is seen from outside the network, as the peer address on the Expressway-C's secure traversal zone. The reason for this is that in static NAT mode, the Expressway-E requests that incoming signaling and media traffic should be sent to its external FQDN, rather than its private name.

  This also means that the external fifirewall must allow traffic from the Expressway-C to the Expressway-E's external FQDN. This is known as NAT reflection, and may not be supported by all types of fififirewalls.

• Question 5:

  An engineer is deploying Mobile and Remote Access to allow external Cisco Jabber users to sign into a Cisco UCM cluster via Cisco Expressways. The users will sign-in in the format [email protected]. Contact photos for Jabber are hosted on a webserver with the FQDN of phonebook cisco.com. Which configuration must be completed to allow external Jabber users to see contact photos?

  A. An HTTP allow list entry must be made on the Expressway-E for phonebook cisco.com.

  B. A SIP allow list entry must be made on the Expressway-E for .*@cisco.com.

  C. An HTTP allow list entry must be made on the Expressway-C for phonebook cisco.com.

  D. A SIP allow list entry must be made on the Expressway-C for .*@cisco.com.

  Correct Answer: C

  https://community.cisco.com/t5/collaboration-applications/jabber-contact-photo-with-mra/td-p/3050431 upvoted 1 times

• Question 6:

  

  Refer to the exhibit. A Cisco Webex device on an enterprise network has identified the given STUN round-trip delays in milliseconds to the enterprise Video Mesh clusters and two Webex Cloud Media clusters during the call setup. Which correct sequence of clusters is the client connecting to?

  A. US West Coast WCMC. If US West Cost WCMC is full, then Europe WCMC because clients select clusters in the order of SRT delays.

  B. DC Europe. If DC Europe is full, DC APAC because clients select on-premises clusters in the order of SRT delays before using cloud resources,

  C. DC Europe. If DC Europe is full, US West Coast WCMC because clients select resources in the order of SRT delays but ignore SRTs greater than 250 ms

  D. US West Coast WCMC. Clients continuously monitor DC US cluster and reconnect when DC US are available to save bandwidth.

  Correct Answer: C

  Local reachable Video Mesh resources are tried first, in order of lowest SRT delay. When all local resources are exhausted, the participant connects to the cloud.

  While the preference for node selection is your locally deployed Video Mesh nodes, we support a scenario where, if the STUN round-trip (SRT) delay to an on-premises Video Mesh cluster exceeds the tolerable round-trip delay of 250 ms (which usually happens if the on-premises cluster is configured in a different continent), then the system selects the closest cloud media node in that geography instead of a Video Mesh node. 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

• Question 7:

  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. SIP trunk to the DefaultZone

  B. route pattern to the DefaultZone

  C. link to the DefaultZone

  D. pipe to the DefaultZone

  Correct Answer: C

  Links connect local subzones with other subzones and zones. For a call to take place, the endpoints involved must each reside in subzones or zones that have a link between them. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/ expressway/admin_guide/X14-0/exwy_b_cisco-expressway-administrator- guide/exwy_m_bandwidth-control.html#reference_8F4E1875549BC68B009B913862D9C791 upvoted 2 times

• Question 8:

  An administrator is configuring a new Cisco Webex Hybrid Message Service deployment, and the Expressway-C Message Connector is successfully registered in the Control Hub. After the server information of the IM and Presence server is

  added to the Expressway-C, an error "Connectivity to IM and Presence AXL Service could not be established" is displayed in the Control Hub. The Cisco AXL Web Service is enabled on the IM and Presence Service publisher, and the main

  administrator account enabled for AXL API permission is being used.

  Which configuration change must be made to resolve this error?

  A. Enable the Cisco AXL Web Service on the Control Hub

  B. Enable the Cisco AXL Web Service on the Expressway-C Message Connector

  C. Enable an End User account for AXL.API permissions on the IM and Presence Service publisher

  D. Enable a second administrator account for AXL API permissions on the IM and Presence Service publisher

  Correct Answer: D

  Configure an account for Message Connector to access the AXL API of the Cisco Unified Communications Manager IM and Presence Service. You must use an independent administrator account, not the main administrator account. 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-message-deployment-guide_chapter_010.html upvoted 3 times

• Question 9:

  An engineer must configure Mobile and Remote Access. One of the requirements is to expect Cisco Jabber users to enter [email protected] as the login userid. Which DNS record must the engineer modify to start implementing this requirement?

  A. _cuplogin._tcp.cisco.com

  B. _collab-edge._tls.cisco.com

  C. _cisco-uds._tls.cisco.com

  D. _cisco-uds._tcp.cisco.com

  Correct Answer: B

• Question 10:

  

  Refer to the exhibit. When Expressway-E routes a call with URI [email protected] to a DNS zone, which DNS server does the Expressway query for the SIP SRV records?

  A. 10.20.20.20

  B. 10.10.10.10

  C. 10.40.40.40

  D. 10.30.30.30

  Correct Answer: A

  As well as the five default DNS servers, you can specify up to five additional explicit DNS servers for specified domains. This can be useful in deployments where specific domain hierarchies need to be routed to their explicit authorities.