300-820 Online Practice Questions and Answers

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

A. A transform has the function as a neighbor zone in the Expressway. It creates a connection with another server.

B. A transform changes the audio codec when the call goes through the Expressway.

C. A transform is used to route calls to a destination.

D. A transform changes an alias that matches certain criteria into another alias.

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.

B. _cisco-mra._tls.

C. _collab-edge._tls.

D. _cisco-expwy._tls.

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

A. Cisco Webex Administration Tool

B. Cisco UCM

C. Cisco Webex Directory Connector

D. Cisco Unified IM and Presence Server

An organization wants to enable a Cisco Webex connector to synchronize all employees automatically with Cisco Webex instead of using a manual list. Where is the Webex Hybrid Directory Service configured?

A. Install Cisco Directory Connector on a Microsoft Windows Domain server and configure the software and Webex Control Hub.

B. Enable the directory service in Cisco Unified Communications Manager under Cisco Unified Serviceability and add the service in Webex Control Hub.

C. Enable the directory service on Cisco Expressway Edge for Office 365 or Cisco Expressway Core for internal Active Directory and add the service in Webex Control Hub.

D. Install the Cisco Express Connector and configure the device in Cisco Unified Communications Manager under Cisco Unified Serviceability and add the service in Webex Control Hub.

An engineer is deploying an Expressway solution for the SIP domain Cisco.com. Which SRV record should be configured in the public DNS to support inbound B2B calls?

A. _collab-edge._tls.cisco.com

B. _cisco-uds._tcp.cisco.com

C. _sip._tcp.cisco.com

D. _cuplogin._tcp.cisco.com

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

A. When Expressway Core works with VMN clusters, Expressway Core decides which VMN is used for signaling/media connection.

B. Cloud-registered devices choose a VMN cluster based on the lowest STUN round trip delay.

C. The cascading traffic between VMN must bypass the firewall.

D. When Cisco Unified Communications Manager works with multiple VMNs, Cisco Unified CM decides which VMN is used for signaling connection.

E. A VMN can terminate a media connection while operating in maintenance mode.

An administrator has been asked to configure Video Mesh signaling traffic to route through a proxy.

Which is an available proxy type in the Video Mesh node configuration to support this deployment model?

A. Transparent Explicit Proxy

B. Transparent Inspecting Proxy

C. Reverse Proxy

D. Distorting Proxy

Refer to the exhibit.

If the Webex Teams device cannot connect to Video Mesh Cluster-1 because it is busy, which media node does the Webex Teams device connect to next?

A. Both Cloud Node US-EAST and US-WEST

B. Video Mesh Cluster-2 C. Cloud Node US-EAST

D. Cloud Node US-WEST

An administrator is configuring DNS to allow Mobile and Remote Access logins for the domain cisco.com. Where must the _collab- edge_tls.cisco.com DNS SRV record be configured?

A. in the public DNS server

B. in DNS SRV settings under Cisco Unified OS Administration in Cisco UCM

C. in DNS settings in the Expressway-E on the interface that faces the Internet

D. in DNS settings under Cisco Unified OS Administration in Cisco UCM

Which mechanism does TLS use to validate identity?

A. server certificate

B. shared secret

C. username and a password

D. IP address of the peer