Ian Is Beginning His Studies Toward a Degree in Computer

Multiple Choice

Ian is beginning his studies toward a degree in computer security. He knows that he has a lot to learn and wants as solid a footing in the basics as he can get. He has asked you to come over and help him make sure he's got a good grasp of the fundamentals.
-Next, you ask Ian what category of threat encryption is meant to tackle, and which encryption method works best on the Internet. He replies: ____ and ____.

A) necessity; symmetrical
B) integrity; asymmetrical.
C) secrecy; symmetrical,
D) necessity; symmetrical.,