Free Cisco 300-820 Practice Test & Real Exam Questions

A collaboration engineer is configuring Cisco Webex Edge for video conferencing devices to provide support for Cisco Webex Control Hub configuration management. Which configuration control mode must be set on Cisco UCM for Control Hub to manage the on-premises device configuration?

Within which cache timeline do the Webex App endpoints perform a STUN test to calculate round-trip delay time to available media node clusters?

What is the name of the Webex core service that delivers group messaging, one-to-one messaging, presence, and file sharing?

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

An employee has recently left an organization and a manager suspects that this employee may have made changes to the system that no one is aware of. Mobile and Remote Access registration is not working. Internal communications appear to be working, but no external system is able to register or call anywhere. While investigating this problem, it is discovered that no internal systems are able to call externally either. What is the TraversalZone missing that is causing this issue?

Which combination of Cisco portals must an architect use to integrate third-party apps with Webex, develop custom bots, and manage RoomOS device configurations and firmware?

What happens to the encrypted signaling traffic of a collaboration device if you place it inside a firewall with private IP addresses and try to make a call over IP without any collaboration infrastructure?

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?

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

Which requirement must be met to run IPv4 and IPv6 on the same Expressway traversal pair?

A user joins a Webex meeting but experiences one-way audio. The user can hear others, but they cannot hear him. Which two issues are causing this problem? (Choose two.)