Cisco 300-820 Online Practice Questions and Exam Preparation

Cisco 300-820 Online Questions & Answers

• Question 201:

  How is the communication routed in a Hybrid deployment so that people on Cisco Cloud-Based IM are able to communicate with Cisco Jabber users in the on-premises environment?

  A. The Expressway-C enables a connection directly with the Cisco Webex Cloud to enable the hybrid service and allow the two services to communicate.
  B. The Expressway-E located in the DMZ establishes a connection with the Cisco Webex Cloud to enable the hybrid service and allow the two services to communicate.
  C. The Cisco Unified IM and Presence server establishes a connection using the outgoing path through the Cisco Expressways that terminates in the Cisco Webex Cloud to create the hybrid environment that links the two services together.
  D. The Cisco UC server establishes a connection using the outgoing path through the Cisco Expressways that terminates in the Cisco Webex Cloud to create the hybrid environment that links the two services together.
  A. The Expressway-C enables a connection directly with the Cisco Webex Cloud to enable the hybrid service and allow the two services to communicate.

• Question 202:

  Which media encryption mode can be configured on an Expressway zone?

  A. Advanced Encryption Standard
  B. IPsec
  C. Triple Data Encryption Standard
  D. force unencrypted
  D. force unencrypted

• Question 203:

  Refer to the exhibit.

  

  A new neighbor zone is added for a new Cisco Meeting Server, but the zone is showing a SIP status of failed from the time the zone it was created. What should be done to resolve this issue?

  A. The search rule must be changed to continue on match
  B. The existing zone using ID 7 must be deleted
  C. More bandwidth must be added to the appropriate pipes
  D. The underlying DNS issue must be resolved
  D. The underlying DNS issue must be resolved

  ---

  At the end it says "Could not resolve hostname"

• Question 204:

  Within which cache timeline do the Webex App endpoints perform a STUN test to calculate round-trip delay time to available media node clusters?

  A. 1 hour
  B. 2 hours
  C. 4 hours
  D. 6 hours
  B. 2 hours

• Question 205:

  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.
  B. _cisco-mra._tls.
  C. _collab-edge._tls.
  D. _cisco-expwy._tls.
  C. _collab-edge._tls.

• Question 206:

  How does an administrator configure an Expressway to make sure an external caller cannot reach a specific internal address?

  A. add the specific URI in the firewall section of the Expressway and block it
  B. block the call with a call policy rule in the Expressway-E
  C. add a search rule route all calls to the Cisco UCM
  D. configure FAC for the destination alias on the Expressway
  B. block the call with a call policy rule in the Expressway-E

• Question 207:

  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
  B. _collab-edge._tls.cisco.com

• Question 208:

  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.
  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

  ---

  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 209:

  Which step is required when configuring Cisco Webex Hybrid Message Service?

  A. Register Expressway-C Connector Hosts to the Cisco Webex Cloud.
  B. Register Expressway-C to Cisco Unified Communications Manager.
  C. Add Expressway-C and Cisco United CM to the Cisco Webex Cloud.
  D. Add Cisco Unity Connection to Expressway-E.
  A. Register Expressway-C Connector Hosts to the Cisco Webex Cloud.

• Question 210:

  Cisco Jabber clients are failing to log in using Mobile and Remote Access. The administrator checked the Jabber problem report logs and saw that connections to the Expressway-E are being refused on TCP port 8443. From a packet capture run on the Jabber client while attempting to log in, there is no response to the TCP SYN packets sent to the Expressway-E by Jabber. Which two reasons are causing the Expressway-E to be unreachable on port 8443 from the internet? (Choose two.)

  A. The Jabber clients using an outdated version.
  B. The Unified Communications zone is down.
  C. The firewall is blocking the port.
  D. The certificate for Jabber is expired.
  E. The SRV record for _cisco-uds is misconfigured.
  C. The firewall is blocking the port.
  E. The SRV record for _cisco-uds is misconfigured.