Cisco 300-820 Online Practice Questions and Exam Preparation

Cisco 300-820 Online Questions & Answers

• Question 11:

  Refer to the exhibit.

  

  Mobile Cisco Jabber cannot register with on-premises Cisco Unified Communications Manager using Mobile and Remote Access. Some logs were captured on Expressway Edge. Which action corrects this problem?

  A. Ensure that the peer address does not match the Common Name on certificate.
  B. Ensure that the _cisco-uds SRV record has been configured.
  C. Ensure that the credential has been entered correctly.
  D. Ensure that the SIP domains are added on Expressway Core.
  C. Ensure that the credential has been entered correctly.

• Question 12:

  Employees at company A must call employees at company B in an extension range of [email protected]. Both companies have a Cisco collaboration infrastructure. All required zones are configured in Cisco Expressways at company A. What must be configured on the Expressway at company A to enable outbound B2B calls?

  A. search rule with a regex pattern of [4]\d{3}@companyB\.com that targets the DNS zone
  B. search rule with a suffix pattern of *[email protected] that targets the neighbor zone
  C. call policy rule from the DNS zone to allow a destination pattern of 4[1- 9]@companyB.com
  D. call policy rule from the neighbor zone to allow a destination pattern of 4[1- 9]@companyB.com
  B. search rule with a suffix pattern of *[email protected] that targets the neighbor zone

• Question 13:

  Which complication does a NAT introduce in SDP for a SIP call?

  A. Additional headers due to NAT encapsulation can cause the packet size to exceed the MTU.
  B. When the client is behind a NAT they may be unable to determine the appropriate offset due to time zones.
  C. The IP address specified in the connection data field may be an unrouteable internal address.
  D. The encryption keys advertised in the SDP are only valid for clients not behind a NAT.
  C. The IP address specified in the connection data field may be an unrouteable internal address.

  ---

  The problem is that if NAT enabled, some firewalls doesn't write the translated address into the SIP Signalling (fortinet for example has VIP feature that make it works).

• Question 14:

  A MRA deployment is being configured where one of the requirements is for registered Jabber users to pull directory photos from an internal server. What should be configured on the Expressway-C so that MRA registered clients reach this server?

  A. A search rule must be created to route the requests to Cisco UCM.
  B. The directory photo server must be added to the HTTP allow list.
  C. A neighbor zone must be created to the directory photo server.
  D. The directory photo server FQDN must be added to the Expressway-C certificate.
  B. The directory photo server must be added to the HTTP allow list.

  ---

  https://www.cisco.com/c/en/us/support/docs/unified-communications/expressway/118798-technote-cucm-00.html#anc29

• Question 15:

  What is a requirement when configuring the Cisco Webex Hybrid Message account for accessing the API of the Cisco UCM IM and Presence Service?

  A. Add a new end-user with the "Standard AXL API Access" role
  B. Use an application user with only the "Standard CTI Allow Control of All Devices" role
  C. Use an application user not the main administrator account with the "Standard AXL API Access" role
  D. Use the main administrator account if it includes the "Standard AXL API Access" role
  C. Use an application user not the main administrator account with the "Standard AXL API Access" role

• Question 16:

  An Expressway-E is configured using a single NIC with NAT.

  How must the Expressway-C traversal client zone be configured to connect to the Expressway-E?

  A. TLS verify must be enabled.
  B. The zone profile must be set to default.
  C. The peer address must be the Expressway-E NAT address.
  D. The peer address must be the Expressway-E LAN 1 IP address.
  C. The peer address must be the Expressway-E NAT address.

• Question 17:

  Between which two DTMF relay methods does the Expressway support interworking? (Choose two.)

  A. unsolicited notify
  B. RFC 2833
  C. KPML
  D. passthrough
  E. H.245 user input indication
  B. RFC 2833
  E. H.245 user input indication

  ---

  When the Expressway is interworking a call between SIP and H.323, it also interworks the DTMF signaling, but only between RFC 2833 DTMF, and the H.245 user input indicators "dtmf" and "basicString". https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/admin_guide/Cisco-Expressway-Administrator-Guide-X12-6.pdf

• Question 18:

  Refer to the exhibit.

  

  A Cisco UCM cluster in mixed mode is integrated with Cisco Expressway-C for Mobile and Remote Access endpoint registration. TLS verify mode is enabled and self-signed certificates with the same common name for Cisco Tomcat and Cisco Call Manager are uploaded to Expressway-C. A Cisco Jabber client fails to register using secure SIP.

  Which two configurations are the cause of the issue? (Choose two.)

  A. The Tomcat certificate has the incorrect FQDN for the Cisco UCM server.
  B. The Jabber client cannot connect to its associated phone device by using Cisco Computer Telephony Integration.
  C. The incorrect secure device profile was applied to the Jabber client.
  D. The Expressway-C does not allow two self-signed certificates with the same CN to be trusted.
  E. The Call Manager certificate is causing a conflict.
  D. The Expressway-C does not allow two self-signed certificates with the same CN to be trusted.
  E. The Call Manager certificate is causing a conflict.

• Question 19:

  An administrator is enabling Mobile and Remote Access login for the Cisco UCM registration domain cisco.com. Phones are registered with a Cisco UCM phone security profile name of securephone.cisco.com. Which two subject alternative names must be configured? (Choose two.)

  A. Securephone.cisco.com on the CallManager certificate
  B. cisco.com on the Expressway-C certificate
  C. Securephone.cisco.com on the Expressway-E certificate
  D. cisco.com on the Expressway-E certificate
  E. Securephone.cisco.com on the Expressway-C certificate
  D. cisco.com on the Expressway-E certificate
  E. Securephone.cisco.com on the Expressway-C certificate

  ---

  https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/exwy_b_certificate-creation-use-deployment-guide/exwy_b_certificate-creation-use-deployment-guide_chapter_011.html

• Question 20:

  An administrator has been tasked to bulk entitle 200 existing users and ensure all future users are automatically configured for the Webex Hybrid Calendar Service. Which two options should be used to configure these users? (Choose two.)

  A. Export a CSV list of users in the Cisco Webex Control Hub, set the Hybrid Calendar Service to TRUE for users to be enabled, then import the file back to Manage Users menu in the Cisco Webex Control Hub.
  B. Set up an Auto-Assign template that enables Hybrid Calendar.
  C. Select the Hybrid Services settings card in the Cisco Webex Control Hub and import a User Status report that contains only users to be enabled.
  D. On the Users tab in the Cisco Webex Control Hub, check the box next to each user who should be enabled, then click the toggle for the Hybrid Calendar service to turn it on.
  E. From Cisco Webex Control Hub, verify the domain that your Hybrid Calendar users will use, which automatically activates them for the service.
  A. Export a CSV list of users in the Cisco Webex Control Hub, set the Hybrid Calendar Service to TRUE for users to be enabled, then import the file back to Manage Users menu in the Cisco Webex Control Hub.
  B. Set up an Auto-Assign template that enables Hybrid Calendar.