We'll go over this will review in class, but you how the Domain Name Service works. You should also read in your own time the [https://en.wikipedia.org/wiki/Domain_Name_System#Address_resolution_mechanism Address resolution mechanism] section (including the '''Recursive ''' and '''caching name server subsection''' subsections) on '''Wikipedia for an overview of a DNS query'''. The diagram there shown in the WIKI is also quite simple and appropriateeasy to understand. DNS Domain Name Service is a large LARGE topic but this is lab provides the minimum that you need to understand basic principles and essentials for this courseand DNS set-up for other courses.

:* Your registrar (whomever you pay for your domain, even if you run your own DNS server) is responsible for '''normal (forward) DNS resolution ''' of your domain.:* Your ISP (whomever you pay for your internet connection, i.e. the company that assigned a public IP to your server) is responsible for revers '''reverse DNS lookups ''' for your IP.