Answer:
I think servers and networks.
It could glitch out or be hacked or deleted.
Amost all professions include theuse of computers. Knowing a lot about them and the way they work could help you use them when needed in a work environment. It would also make an employer more likely to hire you.
Hello, how are you and welcome!
#1 is A and #2 is B, but I don't know about #3 and #4.
