Which Internet protocol encrypts and decrypts user page requests， as well as the pages that are returned by a web server using SSL？（）

A.MAC address
B.TCP/IP address
C.POP Server settings
D.SMTP Server settings

A.Device Manager
B.System Properties
C.Membership Manager
D.Network and Dial Up Connections

A.RG-59 coaxial cable
B.RS-232 Null Modem cable
C.telephone cable
D.UTP CAT5 patch cable