What is the purposes of DNS?
Can anyone please help me get a better understanding of the purposes/uses of DNS? I've searched this term several times on the internet and still don't have a clear understanding. Thanks in advance.
DNS can help you for instance to set names of servers in stead of trying to reach a server where you have a website or data, with the DNS you can reach this it resource with a name that you choose in stead of using ip address, names are easier to remember than the ip address example :10.147.155.124
DNS - Domain Name System is a system where we resolve a domain name ie. www.mydomain.com to the appropriate IP location for a service. (website or mail) So if you are looking for website and enter www.gohere.com the browser takes the name and uses a "name server" to lookup in a directory the name and the corresponding IP address on the internet. From there a request will be made to the server at that address to resolve the website that you want to look up.
That is an simplified version of what goes on.
When you move websites. Someone needs to update the name servers of your new location. There is a whole technology behind the update of the name servers so that it can take a day or so from the time you make the change until someone finds your new location.
I trust this helps.
In simple word DNS is just a mapping of IP Addresses to the website name. Websites are identified in computer systems by a series of numbers called IP (Internet Protocol) addresses. For example the IP of www.google.com is 184.108.40.206, you can access google by just typing this IP address but remembering the IP address of all the sites is not possible so to make one abstract layer for user, Network community uses DNS that just maps this IP to domain names. You can learn what DNS servers are being used in your own setup by using a Windows command. In Start/Run type "cmd". When a black box appears, type "ipconfig/all". This will display the DNS servers running. Apart from this DNS has other use alos in mail systems etc. If you want to know further detail you can refer this link "https://www.ietf.org/rfc/rfc1034.txt" written by IETF(Internet Engineering Task Force) .
DNS or Domain Name Systems is basically a phone book for the internet. Instead of using IP's, a DNS is assigned as a name and attached to the ip address. So for example, 10.10.211.209 is the IP address associated with Joescafe.com. Instead of having to search by the IP, one uses the URL joescafe.com (DNS) and links to that IP address and finds the website. Check out DYN.com. They specialize in DNS optimization. This term refers to a services that allows you to link to the IP/URL at the most efficient route, Load Balancing etc. Hope this helps.
DNS IS A DOMAIN NAME SERVER IT RESOLVES IP ADDRESSES INTO NAMES LIKE www. cyhthiahope.com etc
They maintain a directory of domain names and translate them to Internet Protocol (IP) addresses. This is necessary because, although domain names are easy for people to remember, computers or machines, access websites based on IP addresses,
So when you type www.mosaichub.com since its easy for your to remember, Internally using DNS Services, This domain name is translated into IP Address which is [220.127.116.11]. You browser request to this IP address and then a default page is rendered back.
A DNS resolves names like www. hardsoft .al with an ip address. The protocols that make the internet work use numbers. A DNS has a database of numbers that match up with names so when you type www. hardsoft .al the closest DNS resolves that with an IP address which tcp/ip protocols can use to view hardsoft.al.
DNS allows a human to use a name to identify a location of a machine. Most people are familiar with using names to find a website, such as www.apple.com. The name is converted to a series of numbers (IP Address), which the Internet uses to find computers. Basically a DNS server makes it easier to find computers by names versus numbers.
Websites are identified in computer systems by a series of numbers called IP (Internet Protocol) addresses. So that humans do not have to remember multiple numbers for all the websites they want to visit, these numbers are matched by names in a database table housed on special types of computers called Domain Name Servers. The DNS server translates the website names into the correct IP address.
Without domain name servers, navigating the Internet would become an extremely cumbersome task. Given the millions of websites in existence, keeping track of these by IP number would be impossible.
When you type a name such as www.ehow.com into a browser, the request first goes to a DNS server. If that server can translate the name to an IP address, it does so. Otherwise, the request is forwarded to a higher level server.
According to Dan Kaminsky, a security researcher, the Internet has about 9 million DNS servers. About 10 percent are vulnerable to malicious attacks (see Additional Resources).
You can learn what DNS servers are being used in your own setup by using a Windows command. In Start/Run type "cmd". When a black box appears, type "ipconfig/all". This will display the DNS servers running.
When DNS servers develop problems or are maliciously hacked, you may find yourself on what you thought was the web page wanted but actually redirected to fraudulent sites.
DNS or Domain Name Servers acts in a similar way on Internet to your phone book. The machines communicate between with IP addresses e.g. 192.168.1.1 than domain names e.g. www,google.com. So DNServers stays like a 'oltimes telephone operator. When you ask for www.google.com, behind the scene DNS translate your request to a IP address
Information from all the domain name servers across the Internet are gathered together and stored at the Central Registry. Host companies and Internet Service Providers interact with the Central Registry on a regular schedule to get updated DNS information.