Where find good communication in business?
An answer of either is a fail, as those are layer 4 protocols. Do you prefer filtered ports or closed ports on your firewall. Look for a discussion of security by obscurity and the pros and cons of good communication in business visible vs. There can be many businwss of maturity or immaturity in this answer. If they get it right you can lighten up and offer extra credit for the difference between Linux and Windows versions.