300-820 practice questions 51–60

1. Question 51 · 177 in bank

   Select 2

   Which two statements about Expressway media traversal are true? (Choose two.)

   • AExpressway Control is the traversal server installed in the DMZ.
   • BThe Expressway Edge must be put in a firewall DMZ segment.
   • CCisco Unified Communications Manager zone can be either traversal server or client.
   • DThe Unified Communications traversal zone can be used for Mobile and Remote Access.
   • EBoth Expressway Edge interfaces can be NATed.

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   Answer: BD

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2. Question 52 · 177 in bank

   Which zone is required between Expressway-E and Expressway-C in Mobile and Remote Access deployments?

   • AUnified Communications traversal zone
   • Bneighbor zone
   • CDNS zone
   • Dtraversal zone

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   Answer: A

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3. Question 53 · 177 in bank

   For a Mobile and Remote Access deployment, which server's certificate must include the Unified registration domain as a Subject Alternate Name?

   • AExpressway-C server certificate
   • BCisco Unified Communications Manager server certificate
   • CExpressway-E server certificate
   • DExpressway-C and Expressway-E server certificate

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   Answer: C

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4. Question 54 · 177 in bank

   A Jabber user is being prompted to trust the Expressway-E certificate when using Mobile and Remote Access. The administrator has validated that the Expressway-E certificate is being trusted by the machine running the Jabber client. What else can be done to solve this problem?

   • ACreate a new CSR with new information on the SAN field.
   • BInclude Cisco Unified Communications Manager registration domain in the Expressway-E certificate as a SAN.
   • CChange the domain name.
   • DChange the FQDN of the Expressway.

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   Answer: B

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5. Question 55 · 177 in bank

   Which DNS record and port combination must be resolved externally for Mobile and Remote Access to be used?

   • A_collab-edge on port 8443
   • B_cisco-uds-edge on port 5061
   • C_collab-edge on port 5061
   • D_cisco-uds on port 8443

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   Answer: A

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6. Question 56 · 177 in bank

   Select 2

   Which two statements about Mobile and Remote Access certificate are true? (Choose two.)

   • AExpressway Core can use private CA signed certificate.
   • BYou must upload the root certificates in the phone trust store.
   • CExpressway must generate certificate signing request.
   • DExpressway Edge must use public CA signed certificate.
   • EThe Jabber client can work with public or private CA signed certificate.

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   Answer: AE

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7. Question 57 · 177 in bank

   When determining why Mobile and Remote Access to Cisco TelePresence equipment does not work anymore for an organization. There are several administrators and configuration changes could have happened without anyone knowing. Internal communication seems to be working, but no external system can register or call anywhere. Gathering symptoms, you also discover that no internal systems can call out either. What is TraversalZone missing that causes this issue?

   • Alink to the DefaultZone
   • Bpipe to the DefaultZone
   • CSIP trunk to the DefaultZone
   • Droute pattern to the DefaultZone

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   Answer: C

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8. Question 58 · 177 in bank

   In a Mobile and Remote Access deployment, where must communications be encrypted with TLS?

   • ACisco Expressway-E and endpoints outside the enterprise
   • BCisco Expressway-C, Cisco Unified Communications Manager, and IM&P
   • CCisco Expressway-C, Cisco Expressway-E, and Cisco Unified Communications Manager
   • DCisco Expressway-C, Cisco Expressway-E, and endpoints outside the enterprise

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   Answer: D

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9. Question 59 · 177 in bank

   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.<domain>
   • B_cisco-mra._tls.<domain>
   • C_collab-edge._tls.<domain>
   • D_cisco-expwy._tls.<domain>

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   Answer: A

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10. Question 60 · 177 in bank

    

    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?

    • AChange the SIP profile on the SIP trunk for the Expressway-E to Standard SIP Profile for TelePresence Endpoint
    • BChange the ג€Incoming Portג€ in the SIP Trunk Security Profile for the Expressway-C to not match SIP line registrations
    • CEnable autoregistration for the appropriate DN range on the Cisco UCM servers running the CallManager service
    • DWrite a custom normalization script since the ג€vcs-interopג€ normalization script does not allow registrations

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    Answer: B

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300-820 practice, question 51. 177 questions available.