300-820 practice questions 101–110

1. Question 101 · 177 in bank

   What is a benefit of Cisco Webex Messenger Cloud deployment?

   • ACloud deployment is more secure than an on-premises deployment.
   • BThere is no additional cost to use a cloud deployment.
   • CCloud deployment allows interoperability between Cisco Jabber and Webex Teams users.
   • DCloud deployment is faster than using an on-premises deployment.

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   Answer: C

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2. Question 102 · 177 in bank

   Cisco Collaboration endpoints are exchanging encrypted signaling messages. What is one complication in implementing NAT ALG for voice and video devices?

   • ANAT ALG is not compatible with the H.323 signaling protocol.
   • BNAT ALG introduces latency in the media path.
   • CThe NAT ALG cannot inspect the contents of encrypted signaling messages.
   • DNAT ALG requires the use of NAT reflection, which may not be supported on all firewalls.

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   Answer: C

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3. Question 103 · 177 in bank

   How are Cisco Webex Video Mesh deployments supported?

   • AVideo Mesh Dual NIC are supported in demilitarized deployments.
   • BMixed Single NIC and Dual NIC are supported in the same data center deployments.
   • CClustering Video Mesh Nodes over the WAN are supported if Round Trip Time is low.
   • DIPv6 and IPv4 deployments are supported for Video Mesh clusters.

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   Answer: A

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4. Question 104 · 177 in bank

   How is the communication routed in a Hybrid deployment so that people on Cisco Cloud-Based IM are able to communicate with Cisco Jabber users in the on-premises environment?

   • AThe Expressway-C enables a connection directly with the Cisco Webex Cloud to enable the hybrid service and allow the two services to communicate.
   • BThe Expressway-E located in the DMZ establishes a connection with the Cisco Webex Cloud to enable the hybrid service and allow the two services to communicate.
   • CThe Cisco Unified IM and Presence server establishes a connection using the outgoing path through the Cisco Expressways that terminates in the Cisco Webex Cloud to create the hybrid environment that links the two services together.
   • DThe Cisco UC server establishes a connection using the outgoing path through the Cisco Expressways that terminates in the Cisco Webex Cloud to create the hybrid environment that links the two services together.

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   Answer: A

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5. Question 105 · 177 in bank

   An engineer learns from an end user that calls from outside the company are not being received. Calls are being made to other businesses outside of the company on video using URL addresses. The change management log shows no changes in the configuration of the collaboration solutions. The engineer examines the endpoint, which seems to be registered to the Cisco UCM, and the SIP trunk between the Cisco UCM and sees that the Expressway is also up. In addition, the traversal link shows no errors between the Expressways. Which action must the engineer take to troubleshoot this issue?

   • AOn the Cisco UCM, run the Real-Time Monitoring Tool to see if any incoming calls fail.
   • BOn the Expressway-E, run diagnostic logging under maintenance to see if any requests reach the system.
   • COn the Expressway-E, check the NTP settings to ensure that TLS will be able to terminate. If the clock is out of sync, incoming calls from other working systems would work bur not outgoing calls from the company.
   • DOn the Expressway-C, run a network log under administrative tools to see if any requests reach the system.

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   Answer: B

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6. Question 106 · 177 in bank

   Which protocol and port are used for signaling between on-premises Cisco Webex Video Mesh Nodes and Cloud Media Services?

   • Astandard SIP over TCP port 5060
   • Bsignaling over HTTPS TCP port 443
   • Cstandard SIP TLS over TCP port 5061
   • Dsignaling over TCP port 444

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   Answer: D

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7. Question 107 · 177 in bank

   An engineer is supporting an existing Cisco Collaboration deployment that has internal and external home users using the solution without VPN. Business usage also includes B2B calling for voice and video. Suddenly the engineer receives a report that one of the home office users cannot use the Cisco Jabber client, and shortly after, a few more reports come in for the same error. What must the engineer check first to resolve this issue?

   • Aclient logs of the users
   • Breal-time monitoring toll logs for problems
   • Calarms on the Cisco Expressways
   • Dalarms on the Cisco UCM Cluster

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   Answer: C

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8. Question 108 · 177 in bank

   Which interworking option must be used on the Expressway for it to act as a SIP/H.323 gateway when no endpoint is registered?

   • Aenabled
   • Bregistered only
   • Coff
   • Don

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   Answer: D

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9. Question 109 · 177 in bank

   

   Refer to the exhibit. An administrator troubleshoots Cisco Jabber users experiencing issues when trying to log in and notices errors in the Jabber problem report log. The administrator also sees that the Intercluster Sync Agent service is not running on the IMM and Presence server. Why is the Jabber client unable to sign in?

   • AThe XmppSDK.dl file is missing from the IM and Presence server
   • BThe XMPP stanza is not using the correct ID for the Jabber client.
   • CThe XMPP bind failed on the IM and Presence server
   • DThe Jabber client refused the XMPP bind connection.

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   Answer: C

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10. Question 110 · 177 in bank

    Select 2

    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.)

    • ASecurephone.cisco.com on the CallManager certificate
    • Bcisco.com on the Expressway-C certificate
    • CSecurephone.cisco.com on the Expressway-E certificate
    • Dcisco.com on the Expressway-E certificate
    • ESecurephone.cisco.com on the Expressway-C certificate

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    Answer: DE

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300-820 practice, question 101. 177 questions available.