Question 4

Great question. If you can imagine a box filled with records, Cloudflare's nameservers are like the box and the DNS are the literal records within the box. Cloudflare's nameservers are different from the DNS provided by GoogleDNS or OpenDNS because Cloudflare specifically holds records that have to do with having your website be visible on all networks. Meanwhile, Google Public DNS and OpenDNS are recursive resolvers used by clients/ISPs to look up domain names for people. They do not host or publish your domain's DNS records.

[I want to use an easy to understand example for them to grasp.]

Unfortunately, no. You cannot delegate to Cloudflare nameservers while still using your host's DNS. You must choose one or the other. Think back to the records stored in a box. In order for a company to be able to file the proper paper for its business, both the nameservers and the records within the box (DNS) need to come from Cloudflare. If a company were to attempt to file taxes with records from another company, it wouldn't work and there would be issues. Same thing with trying to delegate to Cloudflare nameservers while still using your host's DNS.

[I want to make it crystal clear so I use the previous example and expound on it.]

Tools Used:

Documentation from: https://www.cloudflare.com/learning/dns/what-is-1.1.1.1/ in order to teach them specifically the difference between nameservers, DNS, and why you cannot mix the two.

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Subject: Cloudflare Nameservers