About CBQ said correct method ______

SSL ( Securit Sockets Laer , Secure Sockets Layer ) protocol handshake layer which includes several of the following protocol modules ?

A certain H.323 gateway received an RRJ message when registering with the gatekeeper , indicating that ____ .

There are ______ methods for user authentication and authorization when logging in to network equipment .

The interconnection between ordinary telephones, PBX and other equipment has a unified interface standard, including analog and digital interfaces.The following are analog voice interfaces.