Match Each of the Following Terms to Its Meaning

Match each of the following terms to its meaning:
I. firewall
II. hacker
III. packet
IV. botnet
V. virus
A. prevents intrusion into your computer
B. a small program that can compromise a computer system
C. small piece of data that travels through the Internet
D. a person who poses a threat to your computer
E. group of software programs that usually run independently on a large number of zombie computers