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 zone edit 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 DNS or 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... ultimately my question is: Would creating virtual hosts and stuff for a subdomain like sub.domain.com be sufficient? and would I need to change anything in the name servers or domain DNS management tools?

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