Cisco 300-820 Online Practice Questions and Exam Preparation

Cisco 300-820 Online Questions & Answers

• Question 161:

  Refer to the exhibit.

  

  What is the result of a transformation applied to alias 88514?

  A. [email protected]
  B. 88513@ccnpcollab com
  C. [email protected]
  D. [email protected]
  C. [email protected]

  ---

  The answer should be [email protected], since the regex considers anything after digit 8 (excludes 1-7), leaves the rest intact, and replaces the domain. So in short terms, it simply adds the domain after the DN.

• Question 162:

  What allows endpoints behind a NAT to discover the paths through which they will pass media?

  A. RTP
  B. TLS
  C. SNMP
  D. ICE
  D. ICE

  ---

  https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html

• Question 163:

  An engineer must review a new traversal zone that is not establishing a successful connection between Expressway-C and Expressway-E. When the event log page on the Expressway-E is reviewed, an authentication failure is found with the detail "user not found".

  Which two actions must the engineer take to resolve the issue? (Choose two.)

  A. Disable TLS verification on the Expressway-E.
  B. Ensure that the authentication credentials configured on both zones to match.
  C. Ensure that LDAP is properly configured and synchronized on the Expressway-E.
  D. Ensure that the authentication credentials exist on the Expressway-E local database.
  E. Ensure that the authentication credentials exist on the Expressway-C local database.
  B. Ensure that the authentication credentials configured on both zones to match.
  D. Ensure that the authentication credentials exist on the Expressway-E local database.

• Question 164:

  A company is implementing Cisco Webex but has existing legacy Cisco video endpoint registered on-premises. The administrator of Webex wants the SIP address of these rooms to appear in the directory listing on Webex registered endpoints and in the Webex App. How can this be configured?

  A. Using the Directory Connector, room resources without Webex licenses can be synchronized with Webex to make the SIP address appear in the phonebook of the Webex App or the endpoint.
  B. Using the Directory Connector, room resources with flex licenses only can be synchronized with Webex to make the room appear in the phonebook of the Webex App or the endpoint. SIP address is then entered from Control Hub because it will not match the field.
  C. Using the Directory Connector, room resources with flex licenses only can be synchronized with Webex to make the SIP address appear in the phonebook of the Webex App or the endpoint.
  D. Using the Directory Connector, room resources without Webex licenses can be synchronized with Webex to make the room appear in the phonebook of the Webex App or the endpoint. SIP address is then entered from Control Hub because it will not match the field.
  A. Using the Directory Connector, room resources without Webex licenses can be synchronized with Webex to make the SIP address appear in the phonebook of the Webex App or the endpoint.

• Question 165:

  How are Cisco Webex Video Mesh deployments supported?

  A. Video Mesh Dual NIC are supported in demilitarized deployments.
  B. Mixed Single NIC and Dual NIC are supported in the same data center deployments.
  C. Clustering Video Mesh Nodes over the WAN are supported if Round Trip Time is low.
  D. IPv6 and IPv4 deployments are supported for Video Mesh clusters.
  A. Video Mesh Dual NIC are supported in demilitarized deployments.

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  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_011.html

• Question 166:

  When designing the call control on a Cisco Expressway Core, which is the sequence of dial plan functions?

  A. transforms, CPL, user policy, search rules
  B. search rules, zones, local zones
  C. DNS zone, local zone, search rules
  D. search rules, transforms
  A. transforms, CPL, user policy, search rules

• Question 167:

  Refer to the exhibit.

  

  When users sign in to Cisco Jabber through Mobile and Remote Access, they cannot see their own photo or the photo of their contacts next to each name. Which action must be taken in Cisco Expressway-C to resolve the issue?

  A. Add an HTTP allow list for the Instant Message and Presence server.
  B. Add an allow call policy rule from the Cisco UCM traversal zone.
  C. Upload the missing Instant Messaging and Presence server certificate to fix the connection to its server.
  D. Add an HTTP allow list for the web server that contains the photos.
  D. Add an HTTP allow list for the web server that contains the photos.

• Question 168:

  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
  C. A STUN cannot punch holes in the firewall

  ---

  Explanation Explanation/Reference:"Those addresses (A, B, and C) populate the SIP SDP offer and answer as ICE candidates, and after the signaling has gone through, both endpoints will have the remote party ICE candidate addresses. It is at that point that the endpoints do a connectivity check by sending STUN messages to one another in an attempt to punch transport holes in the firewalls in order to establish media connectivity between peers." https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html

• Question 169:

  When does the Webex App Endpoint send media to the Video Mesh cluster during a meeting?

  A. when the Webex cloud media services are offline
  B. when there is insufficient bandwidth at the MPLS WAN edge.
  C. when the round-trip delay to the Video Mesh cluster is shorter than the round-trip delay to the Webex cloud media services
  D. when there is insufficient bandwidth at the internet edge
  C. when the round-trip delay to the Video Mesh cluster is shorter than the round-trip delay to the Webex cloud media services

• Question 170:

  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.
  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.