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300-820
Implementing Cisco Collaboration Cloud and Edge Solutions (300-820 CLCEI) Questions and Answers

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Viewing questions 41-50 out of questions

Questions # 41:

Refer to the exhibit.

Question # 41

Which inbound connection should an administrator configure on the outside firewall?

Options:

Media: UDP 36000 to 36011

HTTPS (tunneled over SSH between C and E): TCP 2222

SIP TCP 5061

XMPP TCP 5222

Answer

Questions # 42:

A company has enabled ICE to optimize call flows and improve video quality between their Cisco Collaboration endpoints internally and externally.

For which reason would you see activity on the TURN server when a call is established between two external endpoints?

Options:

The video call is using encryption, which is not supported by ICE with CUCM 12.5

ICE cannot reduce the packet loss on the link

A STUN cannot punch holes in the firewall

The video call is using 4K resolution, which is not supported by ICE with CUCM 12.5

Answer

Questions # 43:

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. Which configuration must happen?

Options:

Configure a traversal zone on each server with a destination of the other Expressway-C.

Configure a neighbor zone on each server with a destination of the other Expressway-C.

Configure a transform on each server to strip the port numbers at the end of the alias.

Configure a transform on each server to convert the calling alias into the called alias.

Answer

Questions # 44:

Which part of a hybrid cloud-based deployment with Cisco Webex Messenger Service is used for meeting capabilities?

Options:

Cisco Unified CM is always used for meeting capabilities.

Depending on the media flow, the Webex Meeting Center or local Cisco Unified CM meeting resources are used for meeting capabilities.

Depending on the origin of the user, the Webex Meeting Center or local Cisco Unified Communications Manager meeting resources are used for meeting capabilities.

Cisco Webex Meeting Center is always used for meeting capabilities.

Answer

Questions # 45:

Cisco media traversal technology has enabled a secure environment where internal video endpoints call and receive calls from external video endpoints. How does the Expressway-C and Expressway-E communicate?

Options:

Expressway-C establishes an outgoing request to Expressway-E, enabling the Expressway-E in the DMZ to notify the internal Expressway-C of an incoming call from an external endpoint.

Internal endpoints are registered to Expressway-E in the DMZ. Expressway-C, which is also in the DMZ, will receive and make calls on behalf of Expressway-E because they are in the same network.

Expressway-E establishes an outgoing request to Expressway-C, enabling the Expressway-C in the DMZ to notify the internal Expressway-E of an incoming call from an external endpoint.

Internal endpoints are registered to Expressway-C in the DMZ. Expressway-E, which is also in the DMZ, will receive and make calls on behalf of Expressway-C because they are in the same network.

Answer

Explanation

[Reference: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/exwy_b_mra-expressway-deployment-guide/exwy_b_mra-expressway-deployment-guide_chapter_00.html, , , , ]

Questions # 46:

An engineer attempts to upload a server certificate to an Expressway-C server but receives an error when they click the upload button that says that the file is invalid. The engineer is advised that this happens because the certificate was signed incorrectly and is missing an attribute. What must the engineer do to upload the certificate?

Options:

Create a certificate request via Certificate Services Web Page and ensure that the certificate validity period is five years because the Expressway server validates this during certificate import.

Create a certificate request via the Certificate Services Web Page and ensure that the Subject Common Name field contains the server FQDN and all Cisco Unified CM phone security profile names.

Create a new certificate template with "Server authentication” and "Client authentication" enabled and use this template when signing the Expressway server certificate.

Create a new certificate template with the certificate attribute "Allow private key to be exported" enabled and use this template when signing the Expressway server certificate.

Answer

Questions # 47:

What is the default DSCP value for video traffic that is routed through an Expressway server?

Options:

Answer

Questions # 48:

Refer to the exhibit.

Question # 48

Mobile Cisco Jabber cannot register with on-premises Cisco Unified Communications Manager using Mobile and Remote Access. Some logs were captured on Expressway Edge.

Which action corrects this problem?

Options:

Ensure that the peer address does not match the Common Name on certificate.

Ensure that the _cisco-uds SRV record has been configured.

Ensure that the credential has been entered correctly.

Ensure that the SIP domains are added on Expressway Core.

Answer

Questions # 49:

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

Options:

call routing

traversal subzone

call policy

search rule

Answer

Explanation

[Reference:, https://cmslab.ciscolive.com/pod8/cucm/expctrunk, , , ]

Questions # 50:

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?

Options:

The Expressway-C enables a connection directly with the Cisco Webex Cloud to enable the hybrid service and allow the two services to communicate.

The Expressway-E located in the DMZ establishes a connection with the Cisco Webex Cloud to enable the hybrid service and allow the two services to communicate.

The Cisco Unified IM and Presence server establishes a connection using the outgoing path through the Cisco Expressways that terminates in the Cisco Webex Cloud to create the hybrid environment that links the two services together.

The Cisco UC server establishes a connection using the outgoing path through the Cisco Expressways that terminates in the Cisco Webex Cloud to create the hybrid environment that links the two services together.

Answer

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