300-820 試験問題を無料オンラインアクセス

Refer to the exhibit.

Refer to the exhibit. A company has a Cisco collaboration infrastructure that contains Cisco UCM and Cisco Expressway-C and Expressway-E for Mobile and Remote Access. When the engineer sets up the environment to support B2B calling, they discover that the zone stale between Expressway-C and Cisco UCM failed. What must the STEP Trunk Security Profile setting be changed to in Cisco UCM to resolve the issue?

• A.UDP for the outgoing transport type
• B.value other than the default listening port for incoming SIP connections on Cisco UCM
• C.TCP for the incoming transport type
• D.value other than the default listening port for outgoing SIP connections on Cisco UCM

What is a description of an Interactive Connectivity Establishment?

• A.It is used to find the best media path between network elements in traversal calls.
• B.It allows Mobile and Remote Access endpoints to connect video calls signaling peer-to-peer.
• C.It allows calling external endpoints with reduced overhead under VPN connections.
• D.It is used by B2BUA to keep the firewall ports opened for inbound/outbound calls.

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

• A.Cisco Webex Administration Tool
• B.Cisco UCM
• C.Cisco Unified IM and Presence Server
• D.Cisco Webex Directory Connector

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

• A.Expressway Control is the traversal server installed in the DMZ
• B.It is possible to NAT both Expressway-E interfaces
• C.Cisco UCM zone should be either traversal server or client
• D.The Unified Communications traversal zone should be used for MRA
• E.The Expressway-E must be put in a firewall DMZ segment

Which dial plan component is configured in Expressway-C to route a call to the Cisco UCM?

• A.traversal subzone
• B.search rule
• C.call routing
• D.call policy