What is Authoritative and Non-authoritative DNS Server

An authoritative answer comes from a nameserver that is considered authoritative for the domain which it's returning a record for (one of the nameservers in the list for the domain you did a lookup on), and a non-authoritative answer comes from anywhere else (a nameserver not in the list for the domain you did a lookup ...

1. What is a non-authoritative DNS server?
2. What is DNS authoritative server?
3. What is authoritative DNS answer?
4. What are the two types of DNS?
5. How do I find my authoritative DNS?
6. What is a non authoritative restore?
7. Is name server the same as DNS?
8. How many authoritative DNS servers are there?
9. What is DNS zone example?
10. What is the difference between authoritative and recursive DNS?
11. What are the types of DNS?
12. What is the difference between authoritative and non authoritative server?

What is a non-authoritative DNS server?

Non-authoritative name servers do not contain original source files of domain's zone. They have a cache file for the domains that is constructed from all the DNS lookups done previously. If a DNS server responded for a DNS query which doesn't have original file is known as a Non-authoritative answer.

What is DNS authoritative server?

The authoritative DNS server is the final holder of the IP of the domain you are looking for. When you write a domain name in your browser, a DNS query is sent to your internet service provider (ISP). The ISP has a recursive server, which might have the needed information cached in its memory.

What is authoritative DNS answer?

An authoritative answer is when the DNS server hosting the primary copy of the DNS record responses to your lookup. See the example below on how to get an authoritative response. The reason why the primary authoritative server isn't involved in responding to all nslookup queries is to reduce server load.

What are the two types of DNS?

All DNS servers fall into one of four categories: Recursive resolvers, root nameservers, TLD nameservers, and authoritative nameservers.

How do I find my authoritative DNS?

To find out who is responsible for DNS hosting of a domain, you need to find the authoritative DNS servers (or Name Servers) for that domain. A list of DNS servers authoritative for the domain is shown in the Name Server (NS) record. To find this record, you can use the NSLOOKUP tool.

What is a non authoritative restore?

Non-Authoritative : Non-Authoritative method will restore an active directory to the server in which the restore is being done and will then receive all of the recent updates from its replication partners in the domain.

Is name server the same as DNS?

A DNS server and “name server” are the same thing. The acronym DNS means Domain Name Service, Domain Naming System, or Domain Name System, depending on whom you talk to, but it's all the same thing. The service of DNS Server in Windows 2003 is simply Microsoft's implementation of a domain name server.

How many authoritative DNS servers are there?

There are hundreds of root servers at over 130 locations all over the world. ICANN² is responsible for the servers for one of the 13 IP addresses and entrusts the operation of the rest to various other organizations. In total, there are 12 organizations held responsible, with VeriSign operating two of them³.

What is DNS zone example?

A DNS zone is a portion of the DNS namespace that is managed by a specific organization or administrator. A DNS zone is an administrative space which allows for more granular control of DNS components, such as authoritative nameservers. The domain name space is a hierarchical tree, with the DNS root domain at the top.

What is the difference between authoritative and recursive DNS?

There are two types of DNS servers: authoritative and recursive. Authoritative nameservers are like the phone book company that publishes multiple phone books, one per region. Recursive DNS servers are like someone who uses a phone book to look up the number to contact a person or company.

What are the types of DNS?

3 types of DNS servers—DNS Resolver, DNS Root Server and Authoritative Name Server. 10 types of common DNS records—including A, AAAA, CNAME, MX and NS.

What is the difference between authoritative and non authoritative server?

An authoritative answer comes from a nameserver that is considered authoritative for the domain which it's returning a record for (one of the nameservers in the list for the domain you did a lookup on), and a non-authoritative answer comes from anywhere else (a nameserver not in the list for the domain you did a lookup ...