What is the difference between a root DNS server a TLD serve

What is the difference between a root DNS server, a TLD server, and an authoritative DNS server?

Solution

Root DNS Server:

Root name server is a name server for the Domain Name System\'s root region. It openly answers requests for the records in the root region and answer extra requests by returning a list of the reliable name servers for the suitable top level domain. The public root name servers are a decisive part of the Internet communications because they are the first in translate human readable host names into IP addresses that are used in communication among Internet hosts.

TLD server:

TLD is the highest level in the hierarchical Domain Name System of the Internet. The peak level domain names are installed in the root region of the name space. For all the domains in lesser level so it is the final part of the domain name so the final label of a completely qualified domain name.

Authoritative DNS server:

An authoritative name server provide actual answer to your DNS queries like mail server IP address or web site IP address. It provides unique and ultimate answers to DNS queries. It does not provide just cached answers that were obtain from another name server.