which two statements about RFC 1918 addresses are true? (Choose

which two statements about RFC 1918 addresses are true? (Choose two.)

A.They have reserved address space for Class A and Class B networks only

B.They increase network performance.

C.They require Network Address Translation or Port Address Translation to access the Internet

D.They must be registered.

E.They provide security to end users when the users access the Internet

正确答案是CE