300-820 Online Practice Questions and Answers

A call is sent by Cisco UCM to Expressway with a URI of [email protected].

If (7508...) @expc1a\.pod8\.test\.lab.* is the pattern string, what would be the replacement string of the transform in Expressway to re-write the call so that it becomes [email protected]?

A. \1@conf\.pod8.test.lab.@

B. \1@conf\.pod8\.test\lab.*

C. \[email protected]\.test\.lab

D. \1@conf\.pod8\.test.lab.!

Which two statements about Mobile and Remote Access certificate are true? (Choose two.)

A. Expressway Core can use private CA signed certificate.

B. You must upload the root certificates in the phone trust store.

C. Expressway must generate certificate signing request.

D. Expressway Edge must use public CA signed certificate.

E. The Jabber client can work with public or private CA signed certificate.

Refer to the exhibit.

The firewall has been configured from NAT 192.168.108.2 to 100.64.0.1. Which configuration changes are needed for an Expressway-E with dual network interfaces?

A. Option A

B. Option B

C. Option C

D. Option D

Refer to the exhibit.

An Expressway-C and Expressway-E are configured for B2B calling and the Expressway- E zone is set to TLS Verify Currently, calls do not reach the Expressway-C. The Traversal Client zone on the Expressway-C for B2B reports the information in the exhibit for the Peer 1 address.

Which action resolves this error?

A. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.

B. Configure the Expressway-C Traversal Client zone transport protocol with TCP.

C. Add a server certificate to the Expressway-C that is signed by a certificate authority.

D. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.

Which step is required when configuring Cisco Webex Hybrid Message Service?

A. Register Expressway-C Connector Hosts to the Cisco Webex Cloud.

B. Register Expressway-C to Cisco Unified Communications Manager.

C. Add Expressway-C and Cisco United CM to the Cisco Webex Cloud.

D. Add Cisco Unity Connection to Expressway-E.

Which zone is required between Expressway-E and Expressway-C in Mobile and Remote Access deployments?

A. Unified Communications traversal zone

B. neighbor zone

C. DNS zone

D. traversal zone

A company already has a Cisco Unified Communications Manager for internal audio and video traffic, but it requires video communication with external partners and customers. It is important to ensure security for the deployment and the connectivity.

What must be set up to enable this requirement?

A. Cisco Unified Border Element and Cisco ASA Firewall

B. Cisco Unified Border Element and Cisco Firepower Firewall

C. Cisco Expressway-C and Cisco Expressway-E

D. Cisco Expressway-C and Cisco Unified Border Element

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 the engineer configure on the Expressway-C to meet this requirement?

A. traversal zone with the peer address 192.168.10.63

B. neighbor zone with the peer address 192.168.10.63

C. traversal zone with the peer address of 203.0.113.5

D. neighbor zone with the peer address of 203.0.113.5

An administrator must configure the DNS SRV records for Mobile and Remote Access for a company with the domain example.com, the Expressway-E FQDN is ExpE.example.com, and the Expressway-C FQDN is Exp-C.example.com. What must the administrator configure to allow external clients to discover the Expressway-E server?

A. SRV record _collab-edge._tls.example.com that resolves to ExpE.example.com on port 8443

B. SRV record _cisco-uds._tcp.example.com that resolves to ExpE.example.com on port 5061

C. SRV record _cisco-uds._tcp.example.com that resolves to ExpC.example.com on port 8443

D. SRV record _collab-edge._tls.example.com that resolves ta ExpE.example.com on port 5061

A company is implementing Cisco Webex but has existing legacy Cisco video endpoint registered on-premises. The administrator of Webex wants the SIP address of these rooms to appear in the directory listing on Webex registered endpoints and in the Webex App. How can this be configured?

A. Using the Directory Connector, room resources without Webex licenses can be synchronized with Webex to make the SIP address appear in the phonebook of the Webex App or the endpoint.

B. Using the Directory Connector, room resources with flex licenses only can be synchronized with Webex to make the room appear in the phonebook of the Webex App or the endpoint. SIP address is then entered from Control Hub because it will not match the field.

C. Using the Directory Connector, room resources with flex licenses only can be synchronized with Webex to make the SIP address appear in the phonebook of the Webex App or the endpoint.

D. Using the Directory Connector, room resources without Webex licenses can be synchronized with Webex to make the room appear in the phonebook of the Webex App or the endpoint. SIP address is then entered from Control Hub because it will not match the field.