The answer would be an A/V Specialist, because Betsy is working with technical equipment on a TV set.
To get the number ot decoder output:
2^n; where n is number of input
2^4
2 × 2 × 2 × 2 = 16 outputs
A spoofing attack. "<span>a situation in which one person or program successfully masquerades as another by falsifying data, thereby gaining an illegitimate advantage."</span>
It can be any letter or number as long as its validated.
ping, tracert or nslookup can all be used.
