_______ is a specialized viewer software program.

One class _ another class if it manipulates objects of that class.

Fill in the blank(s) with the appropriate word(s).

____ is a collection of Internet Engineering Task Force (IETF) standards that define an architecture at the Internet Protocol (IP) layer that protects IP traffic by using various security services.?

A. ?RIP B. ?IPSec C. ?TCP/IP D. ?ARP