Subdomains regarding name servers/domains

Question

I know how to configure subdomains like (sub.example.com) on apache etc. My question is, do I need to make any changes to the name servers/domain that is provided to me?

Would it work the same as domain.com/sub?

Worth noting that I use http://za.net/ as my domain provider (free domain) and zoneedit as the name server provider which is also free. I think .za.net provides third-level domains, because when you register it, it becomes example.za.net.

I'm not 100% sure that it provides third-level domains, but would I need to make any changes with that? Or would the setup in my apache config as a subdomain for sub.example.za.net work without need to do anything with the domain/name servers?

http://co.za/ is the same, but you pay for it. It's the premium domain provider in South Africa, but i've seen many sites with sub.example.co.za for example.

Anyway, my ultimate question is, would creating virtualhosts and stuff for a subdomain like sub.domain.com be sufficient? Would I need to change anything in the name servers/domain?

the sub.domain.com would read the "sub" folder in the htdocs.

Answer 1

my ultimate question is, would creating virtualhosts and stuff for a subdomain like sub.domain.com be sufficient?

No

1. You create not subdomains, but hosts in domain - RTFM right terms and difference between both
2. You have to add all this hosts in base domain, in order to provide A address (any way) for client, which later asks your Apache about your virualhost for needed hostname