Domain naming system (Domain Name System) DNS.bullet We already know how to communicate on the Internet which use the TCP/IP protocol to communicate with the IP number always refers to this IP number, sectioned, and still have difficulty remembering. If the machine is on the network, there are a lot. To remember IP numbers, it will be difficult, and the possibly confusing misconceptions. Guidelines to solve the problem is to set the name or the letters came up instead. IP number is 203.154.220.7 number is wap.chandra. ac.th etc because they can recognize more than precisely name. In addition, in the case of birth, death, or make changes to the computer. From IP number 203.154.220.7 is 203.154.220.254 administrator manages data modification in the new machine name instead of the original machine immediately without having to migrate. Any hardware section in the user's point of view, they do not need to modify anything in the end. Still being able to use the original.bullet For Internet network has developed a mechanism to replace the computer name instead of IP number to a service or a Name-to-IP Address, and Domain Name System called this mechanism (DNS) by being stored in a database of names and IP numbers are hierarchical (hierarchical structure) is a special function on your computer called a Domain Name Server or the Name Server this Domain Name database structure at the top level, there is the meaning of categories or name indicate the country in which it is located. Domain name, for example, the top level, as in the following table:
การแปล กรุณารอสักครู่..
