CompTIA A+ 220-902 Question J-24

Which of the following is the MAIN difference between a rootkit and a virus?

A. Rootkits encrypt the operating system while viruses encrypt documents
B. Rootkits execute as super user while viruses execute as regular users
C. Rootkits modify the BIOS while viruses cannot access the BIOS
D. Rootkits infiltrate the kernel while viruses infiltrate files

Correct Answer: D