Cisco CCNP Collaboration 300-820 Questions & Answers

• Question 81:

  Which two items are configured when deploying a B2B collaboration solution? (Choose two.)

  A. SIP trunk between Cisco Unified Communications Manager and Cisco Expressway-C

  B. search rules in Cisco Expressway-E

  C. SIP trunk between Cisco Unified Communications Manager and Cisco Expressway-E

  D. traversal client on a Cisco Expressway-E

  E. DNS zone on a Cisco Expressway-C

  Correct Answer: AB

• Question 82:

  Refer to the exhibit. An engineer is deploying mobile and remote access in an environment that already had functioning Business to Business calling. Mobile and remote access SIP registrations are failing. To troubleshoot, SIP logs were collected. How is this issue resolved?

  

  A. Change the SIP profile on the SIP trunk for the Expressway-E to Standard SIP Profile for TelePresence Endpoint

  B. Change the "Incoming Port" in the SIP Trunk Security Profile for the Expressway-C to not match SIP line registrations

  C. Enable autoregistration for the appropriate DN range on the Cisco UCM servers running the CallManager service

  D. Write a custom normalization script since the "vcs-interop" normalization script does not allow registrations

  Correct Answer: B

• Question 83:

  Cisco media traversal technology has enabled a secure environment where internal video endpoints call and receive calls from external video endpoints. How does the Expressway- C and Expressway-E communicate?

  A. Expressway-C establishes an outgoing request to Expressway-E, enabling the Expressway-E in the DMZ to notify the internal Expressway-C of an incoming call from an external endpoint.

  B. Internal endpoints are registered to Expressway-E in the DMZ. Expressway-C, which is also in the DMZ, will receive and make calls on behalf of Expressway-E because they are in the same network.

  C. Expressway-E establishes an outgoing request to Expressway-C, enabling the Expressway-C in the DMZ to notify the internal Expressway-E of an incoming call from an external endpoint.

  D. Internal endpoints are registered to Expressway-C in the DMZ. Expressway-E, which is also in the DMZ, will receive and make calls on behalf of Expressway-C because they are in the same network.

  Correct Answer: A

  Reference: 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_00.html

• Question 84:

  Refer to the exhibit.

  

  Which two numbers match the regular expression? (Choose two.)

  A. d20d16d20d22

  B. 2091652010224

  C. 209165200225

  D. d209d165d200d224

  E. 209165200224

  Correct Answer: CE

• Question 85:

  Refer to the exhibit.

  

  While troubleshooting Cisco Jabber login issues, there are some error messages. Why is the Jabber client unable to sign in?

  A. down Cisco Unified Communications Manager server

  B. XMPP bind failures

  C. incorrect login credentials

  D. service discovery issues

  Correct Answer: B

• Question 86:

  Which step is taken when configuring a Cisco Expressway solution?

  A. Configure the Expressway-E by using a non-traversal server zone.

  B. Enable static NAT on the Expressway-E only.

  C. Disable H.323 mode on the Expressway-E.

  D. Enable H.323 H.460.19 demultiplexing mode on the Expressway-C.

  Correct Answer: B

• Question 87:

  An organization with a domain name of example.com.

  Which two SRV records are valid for a SIP and H.323 communication? (Choose two.)

  A. _sips._tcp.example.com

  B. _sips._udp.example.com

  C. _h323ls._udp.example com

  D. _h323ls._tcp.example.com

  E. _collab-edge._tls.example.com

  Correct Answer: AC

• Question 88:

  Where are voice calls handled in a Cisco Jabber hybrid cloud-based deployment with Cisco Webex Platform Service?

  A. Voice calls use Webex Calling platform for call control and use hybrid media nodes for local conferencing.

  B. Voice calls use local media nodes to keep traffic internal for internal traffic and use Webex Calling for external calls.

  C. Voice call use Cisco Unified Communications Manager for local calls and Webex Calling for external calls.

  D. Voice calls use local Cisco Unified Communications Manager for all calls.

  Correct Answer: D

• Question 89:

  Cisco Collaboration endpoints are exchanging encrypted signaling messages.

  What is one major complication in implementing NAT ALG for voice and video devices?

  A. Internal endpoints cannot use addresses from the private address space.

  B. The NAT ALG cannot inspect the contents of encrypted signaling messages.

  C. NAT ALG introduces jitter in the voice path.

  D. Source addresses cannot provide the destination addresses that remote endpoints should use for return packets.

  Correct Answer: B

• Question 90:

  An organization wants to enable a Cisco Webex connector to synchronize all employees automatically with Cisco Webex instead of using a manual list. Where is the Webex Hybrid Directory Service configured?

  A. Install Cisco Directory Connector on a Microsoft Windows Domain server and configure the software and Webex Control Hub.

  B. Enable the directory service in Cisco Unified Communications Manager under Cisco Unified Serviceability and add the service in Webex Control Hub.

  C. Enable the directory service on Cisco Expressway Edge for Office 365 or Cisco Expressway Core for internal Active Directory and add the service in Webex Control Hub.

  D. Install the Cisco Express Connector and configure the device in Cisco Unified Communications Manager under Cisco Unified Serviceability and add the service in Webex Control Hub.

  Correct Answer: A