What is the legitimate service running on the hidden host?

Cert Prep Penetration Testing & Ethical Hacking
1

What is the legitimate service running on the hidden host?

what is the antwort auf diese frage ip:172.16.0.16

2

What room is this? Also, can you write on English?

3

Nmap Basic 100%
Penetration Testin and Ethical Hacking