Refer to the exhibit. An engineer must configure a B2B traversal zone. Trusted certification authority and server certificates are uploaded to Cisco Expressway-C and Expressway-E servers.
After the traversal zone configuration is completed in Expressway-C, the error message in the exhibit appears. What are the two reasons for the error? (Choose two.)

A Webex administrator is configuring the Webex Control Hub to enable enterprise users to sign into Webex securely by authenticating to the IdP of the organization. To conform to the SAML specification, to what can the NameID format be set?

An administrator is configuring a new Cisco Webex Hybrid Message Service deployment, and the Expressway-C Message Connector is successfully registered in the Control Hub. After the server information of the IM and Presence server is added to the Expressway-C, an error "Connectivity to IM and Presence AXL Service could not be established" is displayed in the Control Hub. The Cisco AXL Web Service is enabled on the IM and Presence Service publisher, and the main administrator account enabled for AXL API permission is being used.
Which configuration change must be made to resolve this error?

Which of the following does WebEx support?

Refer to the exhibit. When a Jabber user attempts to connect from outside of the organization, the user enters the login information as "[email protected]" and receives the error "Cannot find your services Automatically". The engineer tries to resolve SRV records used by Jabber.

DNS A record "expressway-e.example.com" points to the Expressway-E IP and
"cucm.example.com" points to the Cisco Unified Communications Manager.
Which change resolves the DNS problem?