300-820 Practice Test

Which statement about scheduling Expressway backups is true?

A.

It is not supported on the application.

B.

It is allowed from the application CLI of the Expressway only.

C.

It is allowed from the application CLI and GUI of the Expressway.

D.

It is allowed from the application GUI of the Expressway only.

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?

A.

The signaling makes it back to the endpoint because the firewall is an application layer
gateway and provides address translation.

B.

Encrypted IP traffic for collaboration devices always is trusted by the firewall.

C.

The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.

D.

The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint

Which entry in the public (external) DNS is valid to configure DNS SRV records for a Cisco Mobile and Remote Access solution?

A.

_cisco-uds._tcp.<domain>

B.

_cisco-mra._tls.<domain>

C.

_collab-edge._tls.<domain>

D.

_cisco-expwy._tls.<domain>

How does an administrator configure an Expressway to make sure an external caller cannot reach a specific internal address?

A.

add the specific URI in the firewall section of the Expressway and block it

B.

block the call with a call policy rule in the Expressway-E

C.

add a search rule route all calls to the Cisco UCM

D.

configure FAC for the destination alias on the Expressway

Which statement about the Cisco Webex hybrid service is true?

A.

Expressway Connector is required for an on-premises Exchange server.

B.

Hybrid Message service works only with Jabber cloud deployment.

C.

Directory Connector is required for Azure AD.

D.

Directory Connector must be deployed for OBTP to work with on-premises video devices.