300-820 practice questions 41–50

1. Question 41 · 177 in bank

   An engineer is deploying an Expressway solution for the SIP domain Cisco.com. Which SRV record should be configured in the public DNS to support inbound B2B calls?

   • A_collab-edge._tls.cisco.com
   • B_cisco-uds._tcp.cisco.com
   • C_sip._tcp.cisco.com
   • D_cuplogin._tcp.cisco.com

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   Answer: C

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2. Question 42 · 177 in bank

   A call is sent by Cisco UCM to Expressway with a URI of [email protected]. If (7508`¦)@expc1a\.pod8\.test\.lab.* is the pattern string, what would be the replacement string of the transform in Expressway to re-write the call so that it becomes [email protected]?

   • A\1@conf\.pod8.test.lab.@
   • B\1@conf\.pod8\.test\lab.*
   • C\[email protected]\.test\.lab
   • D\1@conf\.pod8\.test.lab.!

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   Answer: C

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3. Question 43 · 177 in bank

   

   Refer to the exhibit. Calls to locally registered endpoints are failing. At present, there are two endpoints registered locally to this Expressway. An H.323 endpoint with an alias of `EndpointA` is registered, and a SIP endpoint with an alias of `[email protected]` is also registered. How is this issue resolved?

   • AThe dialplan must be redesigned to use the transforms to convert the alias into SIP URI format and then use separate search rules for each format that needs to be dialed within the local zone.
   • BThe calls are failing because there are insufficient licenses. Additional licenses must be installed for the Expressway to route these calls.
   • CThe current search rule does not match the call, so the search rule must be modified to include a SIP Variant of ג€Standards-Basedג€.
   • DCalling parties are placing calls with the wrong domain. End-users must be instructed not to use the pod1.local domain as that is owned by the local system. Calls to any other domain would work.

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   Answer: A

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4. Question 44 · 177 in bank

   

   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?

   • AThe search rule must be changed to continue on match
   • BThe existing zone using ID 7 must be deleted
   • CMore bandwidth must be added to the appropriate pipes
   • DThe underlying DNS issue must be resolved

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   Answer: D

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5. Question 45 · 177 in bank

   Select 2

   Which two considerations must be made when using Expressway media traversal? (Choose two.)

   • AIt is possible to NAT both Expressway-E interfaces
   • BThe Unified Communications traversal zone should be used for MRA
   • CThe Expressway-E must be put in a firewall DMZ segment
   • DExpressway Control is the traversal server installed in the DMZ
   • ECisco UCM zone should be either traversal server or client

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   Answer: BC

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6. Question 46 · 177 in bank

   Jabber cannot log in via Mobile and Remote Access. You inspect Expressway-C logs and see this error message: XCP_JABBERD Detail="Unable to connect to host '%IP%', port 7400:(111) Connection refused" Which is the cause of this issue?

   • ARich Media Session licenses are not activated on Expressway-E.
   • BExpressway-E is listening on the wrong IP interface.
   • CThe destination port for Expressway-E is set to 7400 instead of 8443 on the Expressway-C.
   • DThe XCP Service is not activated on Expressway-E.

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   Answer: B

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7. Question 47 · 177 in bank

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

   • AIPS
   • BSAML authentication
   • CCisco Unified CM publisher address
   • DSSO

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   Answer: C

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8. Question 48 · 177 in bank

   What it is the purpose of using ICE for Mobile and Remote Access endpoints in the Cisco Collaboration infrastructure?

   • AICE controls the bandwidth usage for Cisco Collaboration endpoints if the endpoints are located outside the company network.
   • BICE enables Cisco Collaboration endpoints to determine if there is direct connectivity between them.
   • CICE uses FAST updates to optimize the video quality in case of packet loss. This technology is available only from Cisco Unified CM version 11.5 and later.
   • DICE enablement allows for the Cisco Collaboration endpoint to register through Expressway servers to Cisco Unified Communications Manager behind a firewall.

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   Answer: B

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9. Question 49 · 177 in bank

   

   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?

   • AEnsure that the peer address does not match the Common Name on certificate.
   • BEnsure that the _cisco-uds SRV record has been configured.
   • CEnsure that the credential has been entered correctly.
   • DEnsure that the SIP domains are added on Expressway Core.

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   Answer: C

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10. Question 50 · 177 in bank

    When deploying an Expressway Core and Expressway Edge cluster for mobile and remote access, which TLS verity subject name must be configured on the Expressway-E UC traversal zone?

    • AWebex CUSP Cluster Name
    • BExpressway-E Cluster Name
    • CCisco Unified Communications Manager Publisher FQDN
    • DExpressway-C Cluster Name

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    Answer: B

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300-820 practice, question 41. 177 questions available.