Good 300-820 Exam Dumps Save Your Preparation Time

1. 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 IM and Presence server.

Why is the Jabber client unable to sign in?

2. Which statement about scheduling Expressway backups is true?

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

4. Refer to the exhibit.





A collaboration engineer creates a transform to modify [email protected]: to [email protected].

Which pattern behavior setting accomplishes this task?

5. Cisco Collaboration deployment has video endpoints that can do B2B calls over the internet, but they also can make audio calls through a gateway. This ability means that someone from the internet can make fraud calls through the system.

Which action must an engineer take to set up the search rules for calls that are being headed to the PSTN gateway?

6. Refer to the exhibit.





When users sign in to Cisco Jabber through Mobile and Remote Access, they cannot see their own photo or the photo of their contacts next to each name.

Which action must be taken in Cisco Expressway-C to resolve the issue?

7. Which type of interface is required when the Cisco Expressway-E is located in a DMZ between two separate firewalls on separate network segments?

8. An engineer must review a new traversal zone that is not establishing a successful connection between Expressway-C and Expressway-E. When the event log page on the Expressway-E is reviewed, an authentication failure is found with the detail “user not found”.

Which two actions must the engineer take to resolve the issue? (Choose two.)

9. An administrator configures a secure SIP trunk in Cisco UCM to Expressway-C. The SIP trunk fails to become active, and an examination of a packet capture finds that the TLS handshake failed with a “Certificate Unknown” error from Cisco UCM. To allow the Cisco UCM to trust the Expressway-C and establish a TLS connection, the administrator will upload the Expressway server certificate to the trust store.

To which trust store must the certificate be uploaded?

10. A company has a single Expressway-E that exhibits high resource utilization. An engineer checks the logs and finds numerous fraudulent attempts from sip:[email protected] .

Where must the engineer go to configure a call policy rule and block the desired URI?

11. What are the steps to access the Service Setup Wizard during the first setup of the Expressway server to license the server?

12. Which two internal SIP endpoints behind a firewall place calls to external devices? (Choose two.)

13. Which describes what could do on the Expressway-E to successfully route calls from Expressway-C on the internal network to the Internet?

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?

15. What are two reasons why port 8443 is unreachable from the Internet to the Expressway-E? (Choose two.)

16. Which connection does the traversal zone configuration define?

17. When the network requirements are configured for a new Video Mesh deployment, which firewall ports are required so that Video Mesh cascade signaling succeeds?

18. An engineer attempts to upload a server certificate to an Expressway-C server but receives an error when they click the upload button that says that the file is invalid. The engineer is advised that this happens because the certificate was signed incorrectly and is missing an attribute.

What must the engineer do to upload the certificate?

19. Refer to the exhibit.





Which SIP trunk security profile configuration on the Cisco UCM server is used for a secured SIP trunk to an Expressway server that is already integrated with the Cisco UCM for Mobile and Remote Access?

20. Which protocol should be used to verify the connectivity for different media paths found during a call using ICE?

21. A company has an on-premises Cisco collaboration cluster that contains Cisco UCM, IM and Presence, and Cisco Webex in the cloud. The company wants to integrate the on-premises infrastructure with Webex to enable interoperability with the Webex App. An engineer already configured the cluster in Cisco UCM, IM and Presence, and the organization in the Webex Control Hub.

Which action must the engineer take to complete the configuration?

22. Refer to the exhibit.





An Expressway-C and Expressway-E are configured for B2B calling and the Expressway- E zone is set to TLS Verify Currently, calls do not reach the Expressway-C. The Traversal Client zone on the Expressway-C for B2B reports the information in the exhibit for the Peer 1 address.

Which action resolves this error?

23. Which set of actions configures ACME certificates on Expressways?

24. In a larger Cisco Collaboration deployment, a user requires the advanced file transfer function in Cisco Jabber while the client is using Mobile and Remote Access. The deployment has multiple Expressway clusters and internal Cisco UCM clusters.

Which configuration must be applied on Cisco Expressway-C for this function to be available?

25. An Expressway Server has both network protocols (IPv4 and IPv6) enabled.

Which two behaviors are correct? (Choose two.)

26. Which two scenarios need a proper DNS configuration on Expressway servers? (Choose two.)

27. 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?

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

29. 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?

30. Users in the Cisco Webex collaboration environment want to be able to use @webex when scheduling a Webex meeting from their Outlook client connected to Office365.

Which configuration meets this requirement?

31. A new set of Expressway-C and Expressway-E is deployed and was configured for Mobile and Remote Access with basic settings.

How must the engineer edit the inbound allow list rule?

32. Refer to the exhibit.





Logins and failing via mobile and remote access.

How is this resolved?

33. An administrator deployed the directory connector to synchronize the on-premises Active Directory with the Webex cloud and needs to map attributes from the AD to the corresponding attributes in the cloud.

To which Webex cloud attribute must the user Account Control attribute be mapped to ensure that users are synced properly?

34. Which two statements about Cisco Webex Video Mesh Nodes are true? (Choose two.)

35. Refer to the exhibit.





The firewall has been configured from NAT 192.168.108.2 to 100.64.0.1.

Which configuration changes are needed for an Expressway-E with dual network interfaces?

A)





B)





C)





D)

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

37. 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?

38. What is the purpose of a transform in the Expressway server?

39. What is the Cisco-recommended key length in bits for a Cisco Expressway certificate?

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

41. What is the default file extension for saving Cisco Expressway-C backups when using the Google Chrome browser?

42. Where can the administrator manage a Webex tenant?

43. An engineer configures a Cisco Collaboration environment to use Mobile and Remote Access for external access for company users. The engineer uses OAuth with refresh on the Cisco UCM SIP lines for extra security and improved user experience. During the setup, Mobile and Remote Access does not work, it is enabled on the Cisco UCM and Cisco Expressways. SIP trunks on ports 5090 and 5091 are configured to avoid conflicts with other SIP trunks between internal Cisco UCM clusters. The traversal zone also uses port 6500. The traversal zone between Expressways shows no errors, and the requests hit Expressway-E from the Internet.

What is the reason that the solution does not work?

44. A network engineer is configuring Mobile and Remote Access for the environment and must add the Certificate Authority into the Expressways.

How does the engineer perform this action?

45. Refer to the exhibit.





What are “Type” field values for this Expressway servers zone configuration?

46. Refer to the exhibit.





When a Jabber user attempts to connect from outside of the organization, the user enters the login information as "[email protected]" and receives the error "Cannot find your services Automatically". The engineer tries to resolve SRV records used by Jabber.

DNS A record "expressway-e.example.com" points to the Expressway-E IP and "cucm.example.com" points to the Cisco Unified Communications Manager.

Which change resolves the DNS problem?

47. What should an engineer use to create users for a Cisco Jabber Cloud Deployment?

48. Which step is required when configuring Cisco Webex Hybrid Message Service?

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

50. DRAG DROP

Drag and drop the services from the left onto their descriptions on the right. Some services are used more than once.

51. What is the result if force encryption for media is enabled in the Expressway on a zone that points to a system/endpoint that is not configured for encryption?

52. When external video endpoints are called via a DNS zone, which dialing method requires DNS to be configured in the Expressway server?

53. Refer to the exhibit.





What is the result of a transformation applied to alias 88514?

54. An engineer is deploying Mobile and Remote Access to allow external Cisco Jabber users to sign into a Cisco UCM cluster via Cisco Expressways. The users will sign-in in the format [email protected]. Contact photos for Jabber are hosted on a webserver with the FQDN of phonebook cisco.com.

Which configuration must be completed to allow external Jabber users to see contact photos?

55. Which two types of information does Cisco Expressway back up? (Choose two.)

56. Which two licenses are required for the B2B feature to work? (Choose two.)

57. Which step is required when configuring Cisco Webex Hybrid Message Service?

58. Refer to the exhibit.





When a user tries to sign in to the Cisco Jabber client through Mobile and Remote Access, they receive this error message: “Cannot communicate with the server.” The external DNS server is configured with the SRV records listed in the exhibit.

What is the cause of the issue?

59. With QoS enabled, which two statements about the Cisco Webex Video Mesh Node signaling and media traffic are true? (Choose two.)

60. Refer to the exhibit.





An administrator set up a B2B interop with a business partner running a Microsoft Lync environment and can successfully make outbound video calls to [email protected]. Inbound calls to [email protected], however, are failing. A quick SRV search returns the records in the exhibit.

Which record must be modified to resolve this challenge?

61. An organization has a domain name of example.com.

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