Cisco 300-820 Online Practice Questions and Exam Preparation

Cisco 300-820 Online Questions & Answers

• Question 181:

  Which technique can be used to have media flow directly between two endpoints that have a NAT between them?

  A. The endpoints can use a Cisco router API to disable NAT temporarily.
  B. Cisco Mobile and Remote Access allows for media traffic directly between two internal endpoints.
  C. Cisco access protocol can make a direct path between endpoints on an internal network.
  D. STUN makes UDP connections through NAT devices.
  D. STUN makes UDP connections through NAT devices.

• Question 182:

  Where is encryption enabled in a Cisco collaboration environment for dedicated hardware- based video endpoint calls?

  A. Set enforce encryption in Cisco Expressway-C under Dial Plan Configuration.
  B. Set enforce encryption in regions in Cisco UCM.
  C. Set enforce encryption on every single endpoint.
  D. Ensure that Cisco UCM is set to restricted mode.
  B. Set enforce encryption in regions in Cisco UCM.

• Question 183:

  Which step is required when configuring cloud and hybrid deployments for Cisco Jabber?

  A. Add the Jabber user to Cisco Unity Connection.
  B. Add the Jabber user to Expressway-E.
  C. Add the Jabber user to Expressway-C.
  D. Add Jabber Users to the Cisco Webex Administration Tool.
  D. Add Jabber Users to the Cisco Webex Administration Tool.

• Question 184:

  Which zone is required on a B2B deployment between Expressway-C and Expressway-E?

  A. traversal zone
  B. DNS zone
  C. default zone
  D. neighbor zone
  A. traversal zone

• Question 185:

  An administrator is deploying Cisco Expressways for Mobile and Remote Access. The registration domain is "example.com", and the Expressway-E FQDN is "expe.example.com". Cisco Jabber clients on the internet cannot discover services via DNS lookup. Which SRV records must be configured in the public DNS to allow Service Discovery?

  A. _collab-edge._tls.example.com
  B. _cisco-uds_tcp.expe.example.com
  C. _cisco-uds_tcp.example.com
  D. _collab-edge_tls.expe.example.com
  A. _collab-edge._tls.example.com

• Question 186:

  A company already has a Cisco Unified Communications Manager for internal audio and video traffic, but it requires video communication with external partners and customers. It is important to ensure security for the deployment and the connectivity.

  What must be set up to enable this requirement?

  A. Cisco Unified Border Element and Cisco ASA Firewall
  B. Cisco Unified Border Element and Cisco Firepower Firewall
  C. Cisco Expressway-C and Cisco Expressway-E
  D. Cisco Expressway-C and Cisco Unified Border Element
  C. Cisco Expressway-C and Cisco Expressway-E

• Question 187:

  Refer to the exhibit.

  

  Which inbound connection should an administrator configure on the outside firewall?

  A. Media: UDP 36000 to 36011
  B. HTTPS (tunneled over SSH between C and E): TCP 2222
  C. SIP TCP 5061
  D. XMPP TCP 5222
  D. XMPP TCP 5222

  ---

  Based on following LINK and page 18(SIP Calls) + 29 (MRA Connections): https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/Cisco-Expressway-IP-Port-Usage-for-Firewall-Traversal-Deployment-Guide-X12-5.pdf SIP UDP: 5060 SIP TCP: 5060 SIP TLS: 5061 XMPP TCP: 5222 RTP/RTCP: 36000-59999

• Question 188:

  Which type of interface is required when the Cisco Expressway-E is located in a DMZ between two separate firewalls on separate network segments?

  A. dual network interface
  B. application programming interface
  C. command line interface
  D. single network interface
  A. dual network interface

• Question 189:

  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.
  A. Another node in the cluster is used and an intra-cluster cascade between the two Video Mesh nodes is formed.

• Question 190:

  In a Webex Video Mesh deployment, where do Cloud-registered Webex Teams clients and devices send signaling traffic for call setup?

  A. to a local Video Mesh node
  B. directly to the Webex cloud
  C. to an Expressway-E server
  D. to a remote Video Mesh node
  B. directly to the Webex cloud