Cisco 300-820 Online Practice Questions and Exam Preparation

Cisco 300-820 Online Questions & Answers

• Question 171:

  Why would a Cisco Jabber contact under Hybrid Messaging Integration be grayed out?

  A. The contact uses Cisco Webex Teams and Jabber and remains as Do not Disturb for 30 minutes.
  B. The contact was using only Cisco Webex Teams and changed the status to Away.
  C. The contact set Out of the O ce for Cisco Webex Teams.
  D. The other user has not used Cisco Webex Teams or Jabber within the last 72 hours, so they are ofiine.
  D. The other user has not used Cisco Webex Teams or Jabber within the last 72 hours, so they are ofiine.

  ---

  The other user has not used Webex App or Jabber within the last 72 hours. The Message Connector destroys the XMPP session it was holding for the offline user's Webex App. 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_00.html

• Question 172:

  Refer to the exhibit.

  

  Mobile and remote access is being added to an existing B2B deployment and is failing.

  When the administrator looks at the alarms on the Expressway-C, the snippets are shown. Which configuration action should the administrator take to fix this issue?

  A. The listening port on the Expressway-C for SIP TCP must be changed to a value other than 5060
  B. The listening port on the Expressway-C for SIP TLS must be changed to a value other than 5061
  C. The listening port on the Cisco UCM for the Expressway-C SIP trunk must be changed to something other than 5060 or 5061
  D. The listening port on the Cisco UCM for the Expressway-C SIP trunk is set to something other than 5060 or 5061. It must be set to 5060 for insecure and 5061 for secure SIP
  C. The listening port on the Cisco UCM for the Expressway-C SIP trunk must be changed to something other than 5060 or 5061

• Question 173:

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

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

• Question 174:

  What is the default file extension for saving Cisco Expressway-C backups when using the Google Chrome browser?

  A. .tar.gz.enc
  B. .tar.tar.gz
  C. .zip
  D. .tar.gz.gz
  A. .tar.gz.enc

• Question 175:

  When a Cisco Webex Video Mesh Node is configured for an organization, which process does the Webex Teams client use to discover the optimal bridging resource?

  A. the lowest STUN round-trip delay to each node and cloud
  B. a reachable Video Mesh Node and then overflows to the cloud, if needed
  C. the SIP delay header during call setup
  D. an HTTPS speed and latency test to each node and the cloud
  B. a reachable Video Mesh Node and then overflows to the cloud, if needed

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  https://www.cisco.com/c/en/us/solutions/collateral/unified-communications/spark-hybrid-services/datasheet-c78-738153.html

• Question 176:

  An engineer configures a Cisco Collaboration environment to use Mobile and Remote Access for external access for company users. The engineer uses OAuth with refresh on the Cisco UCM SIP lines for extra security and improved user experience. During the setup, Mobile and Remote Access does not work, it is enabled on the Cisco UCM and Cisco Expressways. SIP trunks on ports 5090 and 5091 are configured to avoid con icts with other SIP trunks between internal Cisco UCM clusters. The traversal zone also uses port 6500. The traversal zone between Expressways shows no errors, and the requests hit Expressway-E from the Internet. What is the reason that the solution does not work?

  A. Mobile and Remote Access does not support OAuth with refresh with this configuration,
  B. The default port for Mobile and Remote Access is 6001. Therefore, the traversal port must be port 6001 for Mobile and Remote Access to work.
  C. The default port for Mobile and Remote Access is 6500, which creates a con ict with the existing traversal zone port.
  D. The default port for Mobile and Remote Access is 5091, which creates a con ict with the existing SIP trunks.
  D. The default port for Mobile and Remote Access is 5091, which creates a con ict with the existing SIP trunks.

• Question 177:

  A company identifies a fraudulent toil situation. An engineer reviews the Cisco UCM call detail records and discovers that fraudulent calls originate from a Cisco Expressway-C server and are then routed to a 10-digit PSTN number.

  What must be configured to limit incoming Expressway calls to the internal Cisco UCM range of extensions 5XXXX?

  A. calling search space that contains all the partitions on the Unified Communications Manager SIP trunk to Expressway
  B. call policy rule from the DNS zone to allow a destination regex pattern of \d.*@abc.com
  C. unique search rule with a regex pattern of [5]\d{4}@abc.com that targets the neighbor zone
  D. call policy rule from the DNS zone to allow a destination regex pattern of .*@abc.com
  C. unique search rule with a regex pattern of [5]\d{4}@abc.com that targets the neighbor zone

• Question 178:

  Which two internal SIP endpoints behind a firewall place calls to external devices? (Choose two.)

  A. An Expressway-C communicates with the internal endpoint and forwards the media to and from an Expressway-E.
  B. A Cisco Endpoint is configured with a publicly routable static NAT SIP address to advertise instead of is private IP address.
  C. An Expressway-C communicates directly with the remote party using the ICE protocol
  D. An Expressway-E is used as a VPN server to allow remote SIP edge servers to connect calls
  E. An Expressway-C rewrites the SIP SDP to advertise its own IP address to the external party.
  A. An Expressway-C communicates with the internal endpoint and forwards the media to and from an Expressway-E.
  B. A Cisco Endpoint is configured with a publicly routable static NAT SIP address to advertise instead of is private IP address.

• Question 179:

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

  A. _collab-edge._tls.example.com
  B. _sips_tcp.example.com
  C. _h323ls_tcp.example.com
  D. _h323ls._udp.example.com
  E. _sips._udp.example.com
  B. _sips_tcp.example.com
  D. _h323ls._udp.example.com

• Question 180:

  Refer to the exhibit.

  

  An administrator set up a B2B interop with a business partner running a Microsoft Lync environment and can successfully make outbound video calls to [email protected]. Inbound calls to [email protected], however, are failing. A quick SRV search returns the records in the exhibit.

  Which record must be modified to resolve this challenge?

  A. _h323ls._udp.ciscovoice.com
  B. _sipfederationtcp._tcp.ciscovoice.com
  C. _sips._tcp.ciscovoice.com
  D. _collab-edge._tls.ciscovoice.com
  B. _sipfederationtcp._tcp.ciscovoice.com