300-820 Practice Questions

What is a requirement when configuring the Cisco Webex Hybrid Message account for accessing the API of the Cisco UCM IM and Presence Service?

The Cisco Webex Hybrid Message service is deployed geographically for separate Cisco Unified IM and Presence clusters. What must be configured in the Cisco Webex Control Hub to ach...

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

Refer to the exhibit. What are "Type" field values for this Expressway servers zone configuration?

Refer to the exhibit. Call policy rules on an Expressway-E prevent external callers from the internet from calling a VIP whose URI is [email protected]. Which additional configuration...

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 administr...

Refer to the exhibit. When Expressway-E routes a call with URI [email protected] to a DNS zone, which DNS server does the Expressway query for the SIP SRV records?

Drag and Drop Question Drag and drop the required SAN field items from the left onto the features within the server categories on the right. Answer:

Refer to the exhibit. A Cisco Webex device on an enterprise network has identified the given STUN round-trip delays in milliseconds to the enterprise Video Mesh clusters and two We...

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

Why would a Cisco Jabber contact under Hybrid Messaging Integration be grayed out?

An engineer must fix broken SSH tunnels between Expressway-C (192.168.10.5) and Expressway-E (192.168.20.5). The engineer is advised that the packet capture shows the required pack...

Which 16-digit number is unique to a serial number and is used to enable the system?

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?

Cisco Jabber clients are failing to log in using Mobile and Remote Access. The administrator checked the Jabber problem report logs and saw that connections to the Expressway-E are...

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....

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

An engineer must configure the zone to connect to an Expressway-E using Single NIC with NAT. The internal IP address is 192.168.10.63, and the NAT address is 203.0.113.5. What must...

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 fr...

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 whe...

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

Which mechanism does TLS use to validate identity?

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. T...

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...

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 UC...

What is a benefit of Cisco Webex Messenger Cloud deployment?

Cisco Collaboration endpoints are exchanging encrypted signaling messages. What is one complication in implementing NAT ALG for voice and video devices?

How are Cisco Webex Video Mesh deployments supported?

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 Jabbe...

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?

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 a...

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

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 call...

Which interworking option must be used on the Expressway for it to act as a SIP/H.323 gateway when no endpoint is registered?

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 regist...

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 handsha...

An administrator is enabling Mobile and Remote Access login for the Cisco UCM registration domain cisco.com. Phones are registered with a Cisco UCM phone security profile name of s...

Cisco Expressways are being deployed for Mobile and Remote Access. The Expressway-E internal interface (LAN1) IP is 192.168.100.10/24, and the external interface (LAN2) IP is 172.1...

An administrator installs a new webserver (server1.example.com - 10.1.1.90) for storing Cisco Jabber update files to the network, but all Mobile and Remote Access registered client...

What is the first step to restoring an Expressway cluster from a backup?

An engineer must configure Mobile and Remote Access. One of the requirements is to expect Cisco Jabber users to enter [email protected] as the login userid. Which DNS record must...

Which commands disable SIP Inspection on the Cisco ASA FirePOWER firewall?

Which dial plan settings can be used to set up different regulations according to the protocol (SIP or H.323) or the source of the query?

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

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 t...

How do the Cisco Expressway-C and Expressway-E servers transmit media to each other?

An engineer must enable the communication between two separate Expressway-C servers to allow inbound and outbound calling between different endpoints registered on each server. Whi...

A video device registered with Cisco UCM failed to make an outbound B2B call. From Expressway-C diagnostic logs, an engineer found that the destination pattern is "[email protected]...

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

What is a description of an Interactive Connectivity Establishment?