No, content and proxy are types of server. There's no such thing as a "content query" nor a "proxy query". And DNS very much is content. The content is a who

No, content and proxy are types of server. There's no such thing as a "content query" nor a "proxy query". And DNS very much is content. The content is a whole bunch of resource record sets. Published by content servers, much as in HTTP. And it isn't all name to address stuff.