300-820 Online Practice Questions and Answers

A Jabber user is being prompted to trust the Expressway-E certificate when using Mobile and Remote Access. The administrator has validated that the Expressway-E certificate is being trusted by the machine running the Jabber client. What else can be done to solve this problem?

A. Create a new CSR with new information on the SAN field.

B. Include Cisco Unified Communications Manager registration domain in the Expressway-E certificate as a SAN.

C. Change the domain name.

D. Change the FQDN of the Expressway.

Which connection does the traversal zone configuration define?

A. Expressway-E and Collaboration Endpoints

B. Cisco UC and Cisco Unified Presence Server

C. Cisco Expressway-C and Cisco Expressway-E platforms

D. Cisco UCS E-Series and Cisco UCM

When configuring a Cisco Expressway solution and need to design the dial plan with various rules for URIs and numbers coming through the device. To do so, it is important that some dial plan rules are applied in a certain order. When configuring the transform section, you must know the range of the priorities.

Which range is correct?

A. any number in the drop-down menu

B. any number in the dialog box

C. any number between 1-128

D. any number between 1-65534

Refer to the exhibit.

While troubleshooting Cisco Jabber login issues, there are some error messages. Why is the Jabber client unable to sign in?

A. down Cisco Unified Communications Manager server

B. XMPP bind failures

C. incorrect login credentials

D. service discovery issues

Which two types of information does Cisco Expressway back up? (Choose two.)

A. call records

B. log files

C. IP addresses

D. current call states

E. security certificates

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. How would the engineer configure the Expressways to allow these calls to be completed to external IP addresses?

A. Set calls to unknown IP addresses to direct on the Cisco Expressways, and add a search rule on the Expressway-E

B. Set calls to unknown IP addresses to indirect on the Cisco Expressways, and add a search rule on the Expressway-E

C. Use search rules to manage calls to IP addresses, and the direct/indirect setting on the Expressway is used as a fallback only if the search rules do not exist

D. Set calls to unknown IP addresses to indirect on the Expressway-C and direct on the Expressway-E, and add a search rule on the Expressway-E

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

A. standard SIP over TCP port 5060

B. signaling over HTTPS TCP port 443

C. standard SIP TLS over TCP port 5061

D. signaling over TCP port 444

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?

A. presearch transforms

B. search rules

C. call policy

D. policy services

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

A. dual network interface

B. application programming interface

C. command line interface

D. single network interface

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?

A. 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.

B. 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.

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

D. 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.