Refraction represents a change in the direction of propagation when beams of light encounter a medium with a different density.
Reflection is the return of light to the medium it came from when it encounters a mirror.
Answer:
D
Explanation:
Malware can be used for many things, a click of a button can send complete access to the attacking system. Malware comes in all formes and powers.
chkdsk is a utility that you use to check for bad sectors on a hard drive , as far as how to run it you open the start menu go to your run bar and type chkdsk then follow the instruction on the screen .
