Refer to the exhibit.

Calls to locally registered endpoints are failing. At present, there are two endpoints registered locally to this Expressway. An H.323 endpoint with an alias of "EndpointA" is registered, and a SIP endpoint with an alias of "[email protected]" is also registered. How is this issue resolved?

An engineer is configuring the Expressway cluster to allow Jabber clients that are outside the enterprise network to register, make calls, and send instant messages using the internal Cisco UCM. Which action must be taken before a secure UC traversal zone is added to the Expressway-C?

Which media encryption mode can be configured on an Expressway zone?

What is the Cisco-recommended key length in bits for a Cisco Expressway certificate?

Refer to the exhibit.

Which two outbound connections should an administrator configure on the internal firewall? (Choose two.)