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Questions › Category: 300-820
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An organization wants to be able to call IP addresses and URI addresses. An engineer must configure Cisco Expressways to manage this request from the endpoints in the organization. How would the engineer configure the Expressways to allow these calls to be completed to external IP addresses?
Admin asked 9 months ago • 
25 views0 answers0 votes
When the network requirements are configured for a new Video Mesh deployment, which firewall ports are required so that Video Mesh cascade signaling succeeds?
Admin asked 9 months ago • 
18 views0 answers0 votes
Refer to the exhibit. What are “Type” field values for this Expressway servers zone configuration?
Admin asked 9 months ago • 
23 views0 answers0 votes
An engineer reviews the configuration of a pair of Expressway servers for a company with the domain example.com. The company allows toll fraud calls to reach the Cisco UCM only when it expects externally registered devices to call internal 5-digit extensions. The search history shows that the fraudulent calls have a destination URI of 8 or more digits and several domains. What must the engineer configure to prevent all toll…
Admin asked 9 months ago • 
23 views0 answers0 votes
Which two internal SIP endpoints behind a firewall place calls to external devices? (Choose two.)
Admin asked 9 months ago • 
21 views0 answers0 votes
Which mechanism does TLS use to validate identity?
Admin asked 9 months ago • 
19 views0 answers0 votes
An engineer is investigating failing incoming calls that are expected to connect. The engineer notices that the failed calls all have a port number of 5060 at the end of the URI. The search rules are configured in a way that they do not expect a port to be included. Which configuration allows the routing of this call?
Admin asked 9 months ago • 
22 views0 answers0 votes
Refer to the exhibit. Call policy rules on an Expressway-E prevent external callers from the internet from calling a VIP whose URI is vip@cisco.com . Which additional configuration setting is required for this call policy to function as intended?
Admin asked 9 months ago • 
34 views0 answers0 votes
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…
Admin asked 9 months ago • 
18 views0 answers0 votes
What is a benefit of Cisco Webex Messenger Cloud deployment?
Admin asked 9 months ago • 
16 views0 answers0 votes
How are Cisco Webex Video Mesh deployments supported?
Admin asked 9 months ago • 
14 views0 answers0 votes
Cisco Collaboration endpoints are exchanging encrypted signaling messages. What is one complication in implementing NAT ALG for voice and video devices?
Admin asked 9 months ago • 
18 views0 answers0 votes
An administrator is deploying Cisco Expressways for Mobile and Remote Access. The registration domain is “example.com”, and the Expressway-E FQDN is “expe.example.com”. Cisco Jabber clients on the internet cannot discover services via DNS lookup. Which SRV records must be configured in the public DNS to allow Service Discovery?
Admin asked 9 months ago • 
29 views0 answers0 votes
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…
Admin asked 9 months ago • 
19 views0 answers0 votes
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…
Admin asked 9 months ago • 
16 views0 answers0 votes
Which protocol and port are used for signaling between on-premises Cisco Webex Video Mesh Nodes and Cloud Media Services?
Admin asked 9 months ago • 
14 views0 answers0 votes
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?
Admin asked 9 months ago • 
13 views0 answers0 votes
Which interworking option must be used on the Expressway for it to act as a SIP/H.323 gateway when no endpoint is registered?
Admin asked 9 months ago • 
19 views0 answers0 votes
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?
Admin asked 9 months ago • 
20 views0 answers0 votes
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…
Admin asked 9 months ago • 
19 views0 answers0 votes
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