Cisco 300-820 Online Practice Questions and Exam Preparation

Cisco 300-820 Online Questions & Answers

• Question 121:

  Where can the administrator manage a Webex tenant?

  A. Cisco Webex administrator portal
  B. Cisco Webex management portal
  C. Cisco Webex control panel
  D. Cisco Webex Control Hub
  D. Cisco Webex Control Hub

• Question 122:

  An organization wants to be able to call IP addresses and URI addresses. An engineer must configure Cisco Expressways to manage this request from the endpoints in the organization. How would the engineer configure the Expressways to allow these calls to be completed to external IP addresses?

  A. Set calls to unknown IP addresses to direct on the Cisco Expressways, and add a search rule on the Expressway-E
  B. Set calls to unknown IP addresses to indirect on the Cisco Expressways, and add a search rule on the Expressway-E
  C. Use search rules to manage calls to IP addresses, and the direct/indirect setting on the Expressway is used as a fallback only if the search rules do not exist
  D. Set calls to unknown IP addresses to indirect on the Expressway-C and direct on the Expressway-E, and add a search rule on the Expressway-E
  D. Set calls to unknown IP addresses to indirect on the Expressway-C and direct on the Expressway-E, and add a search rule on the Expressway-E

  ---

  Recommended configuration for fifirewall traversal 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 123:

  What happens to the encrypted signaling traffic of a collaboration device if you place it inside a firewall with private IP addresses and try to make a call over IP without any collaboration infrastructure?

  A. The signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.
  B. Encrypted IP traffic for collaboration devices always is trusted by the firewall.
  C. The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.
  D. The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.
  C. The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.

• Question 124:

  An engineer must fix broken SSH tunnels between Expressway-C (192.168.10.5) and Expressway-E (192.168.20.5). The engineer is advised that the packet capture shows the required packets for the SSH tunnels leaving the Expressway-C but not reaching the Expressway-E. Which firewall configuration must the engineer allow to resolve this issue?

  A. port 2222 from Expressway-E to Expressway-C
  B. port 7001 from Expressway-C to Expressway-E
  C. port 7001 from Expressway-E to Expressway-C
  D. port 2222 from Expressway-C to Expressway-E
  D. port 2222 from Expressway-C to Expressway-E

  ---

  https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/exwy_b_mra-expressway-deployment-guide/exwy_b_mra- expressway-deployment-guide_chapter_0100.html

• Question 125:

  An administrator installs a new webserver (server1.example.com ?10.1.1.90) for storing Cisco Jabber update files to the network, but all Mobile and Remote Access registered clients still run the old Jabber software version, and the update fails. Which configuration task on an Expressway server solves the Jabber software update issue?

  A. Add a rule with the URL http://server1.example.com:80/ to the outbound HTTP allow list manually to allow pushing the new software to the clients.
  B. Add a rule with the URL http://server1.example.com:80/ to the inbound HTTP allow list manually to allow access to the new web server.
  C. Add a rule with the server IP address 10.1.1.90 in the URL to the inbound HTTP allow list because server names and FQDNs are not supported.
  D. Run an IM and Presence server discovery process on Expressway-C to add the new web server to the inbound HTTP allow list automatically.
  B. Add a rule with the URL http://server1.example.com:80/ to the inbound HTTP allow list manually to allow access to the new web server.

• Question 126:

  Which configuration is required when implementing Mobile and Remote Access on Cisco Expressway?

  A. IPS
  B. SAML authentication
  C. Cisco Unified CM publisher address
  D. SSO
  C. Cisco Unified CM publisher address

• Question 127:

  What are two reasons why port 8443 is unreachable from the Internet to the Expressway- E? (Choose two.)

  A. The MRA license is missing on the Expressway-E.
  B. The Unified Communications zone is down.
  C. Transform is not configured on Expressway-E.
  D. The SRV record for _cisco-uds is misconfigured.
  E. The firewall is blocking the port.
  B. The Unified Communications zone is down.
  E. The firewall is blocking the port.

• Question 128:

  Refer to the exhibit.

  

  When a user tries to sign in to the Cisco Jabber client through Mobile and Remote Access, they receive this error message: "Cannot communicate with the server." The external DNS server is configured with the SRV records listed in the exhibit.

  What is the cause of the issue?

  A. The _sips DNS record must target expE-pub.cll-collab.internal and the _cisco-uds DNS record must be removed.
  B. The collab-edge DNS record must be added to the DNS server and the _cisco-uds DNS record must be removed.
  C. A Cisco CSF device must be configured in UC for the user and the _cisco-uds DNS record must be removed.
  D. The HTTP allow list is not allowing communication with the Instant Message and Presence server.
  B. The collab-edge DNS record must be added to the DNS server and the _cisco-uds DNS record must be removed.

• Question 129:

  An administrator made changes to a directory connector for Webex AD synchronization. The number of users synchronized is quite large and the change should affect only a limited number of users. How can the administrator check the result before executing the synchronization?

  A. Initiate an incremental synchronization from the Director Connector app on the on-premises Windows server because it will ask to save the changes.
  B. Initiate a dry run of an incremental synchronization from the Director Connector app on the on-premises Windows server.
  C. Initiate a dry run of an incremental synchronization from the Director Connector in Control Hub.
  D. Initiate an incremental synchronization from the Director Connector in Control Hub because it will ask to save changes.
  B. Initiate a dry run of an incremental synchronization from the Director Connector app on the on-premises Windows server.

• Question 130:

  Refer to the exhibit.

  

  When a Jabber user attempts to connect from outside of the organization, the user enters the login information as "[email protected]" and receives the error "Cannot find your services Automatically". The engineer tries to resolve SRV

  records used by Jabber.

  DNS A record "expressway-e.example.com" points to the Expressway-E IP and "cucm.example.com" points to the Cisco Unified Communications Manager.

  Which change resolves the DNS problem?

  A. Change cisco-uds to point to the Expressway-E FQDN.
  B. Change the collab-edge record to point to 5061.
  C. Remove the cisco-uds SRV record for the external DNS.
  D. Change the priority of the SRV record for cisco-uds.
  C. Remove the cisco-uds SRV record for the external DNS.