Importance of DNS

[serversea]

DNS is simply a database that links meaningful names (known as host names), such as Microsoft Corporation, to a specific IP address, such as 192.168.124.1. Simply linking addresses to names is just the beginning, though, because DNS has many more features in addition to host-name-to-address mapping.

The key features of host name to IP mapping are as follows:

* Mappings of addresses to names & vice versa (known as records) are stored in a database.
* The DNS database is distributed.
* A DNS database also stores additional records.

Although DNS is a database, most importantly it's a distributed database. Each DNS server contains only a small portion of the host name to IP address mappings (relative to the number of records for the entire Internet).

Each DNS server is configured with a special record that tells the DNS server where (the IP address of another DNS server) it will perform a lookup for records it doesn't have in its portion of the DNS database. Because of this arrangement, each DNS server maintains only a small portion of the total DNS host to IP address mappings. The collection of host-name-to-IP-address mappings contained with the DNS database is also known as a namespace. Essentially, when looking for a name in DNS, the DNS client first checks a top-level DNS server database. That server tells the client which DNS server hosts the next part of the DNS name, & the client then queries that server. This lookup-and-handoff process continues until the client finds the DNS server that hosts the DNS record in question, & that server provides the IP address.

In addition to the basic IP-address-to-host-name mapping records stored by the DNS database, records are also maintained by DNS for other purposes. DNS contains a number of record types that facilitate other applications. The Mail Exchanger (MX) record, for example, provides mail servers with the information required to forward e-mail messages to the recipient's e-mail server.

[nillbrian]

DNS is a very important domain of the host's domain name servers. I am now hosting, my hosting.com normally problem around at no extra cost which is why I take care of their service agreement big fans.

[bobbyscott]

DNS is a name of computer and network services, preparation of the area hierarchy. It allows the client to use the computer's name in its place the number of IP addresses to identify the remote host.

[johnniwales]

DNS is what makes possible the use of that name, so no need to enter the IP number of each site to get it. We get the domain name of the site, but not the IP address, helps us to find your site with a domain that has the DNS server role.

[culvermorgan]

DNS is a mapping of main IP address of site with the its name so that we can easily access it, without any problem.

[hafiz mshahid]

The reason is simple. Any time a client makes a request for a domain service, such as authentication, it must find a domain controller to service that request. The Netlogon service on the client finds a name server, which then finds the appropriate

[waltonmorgan]

DNS is a mapping of your website name with its real ip address provided. So that it can be found on internet easily.

[serversea]

DNS is simply a database that links meaningful names (known as host names), such as Microsoft Corporation, to a specific IP address, such as 192.168.124.1. Simply linking addresses to names is just the beginning, though, because DNS has many more features in addition to host-name-to-address mapping.

The key features of host name to IP mapping are as follows:

* Mappings of addresses to names & vice versa (known as records) are stored in a database.
* The DNS database is distributed.
* A DNS database also stores additional records.

Although DNS is a database, most importantly it's a distributed database. Each DNS server contains only a small portion of the host name to IP address mappings (relative to the number of records for the entire Internet).

Each DNS server is configured with a special record that tells the DNS server where (the IP address of another DNS server) it will perform a lookup for records it doesn't have in its portion of the DNS database. Because of this arrangement, each DNS server maintains only a small portion of the total DNS host to IP address mappings. The collection of host-name-to-IP-address mappings contained with the DNS database is also known as a namespace. Essentially, when looking for a name in DNS, the DNS client first checks a top-level DNS server database. That server tells the client which DNS server hosts the next part of the DNS name, & the client then queries that server. This lookup-and-handoff process continues until the client finds the DNS server that hosts the DNS record in question, & that server provides the IP address.

In addition to the basic IP-address-to-host-name mapping records stored by the DNS database, records are also maintained by DNS for other purposes. DNS contains a number of record types that facilitate other applications. The Mail Exchanger (MX) record, for example, provides mail servers with the information required to forward e-mail messages to the recipient's e-mail server.

[Alyy]

The DNS is what allows to use the name, so we do not have to enter the IP number of each page to get it.We get the domain name of the site, but not the IP address, helps us find your site with a domain that the DNS server "function.