Answer:
A white hat hacker, or ethical hacker, uses penetration testing techniques to test an organization's information technology
Explanation:
Simple waveform - something like a sine wave. Very pure sound like you used to get on the tv when that girl was sitting with the toys in the middle of the night. Complex waveform is like speech etc
Answer:
O a trackpad
Explanation:
The TRACKPAD is a flat, touch-sensitive pad just in front of the keyboard.