Learn DNS Series (13) graphic details A, CNAME, MX and NS records

The previous 12 sections describe the basics of DNS and the DNS system of Windows in more detail, and the following sections are primarily about DNS applications.

DNS Records

If the architecture of DNS is likened to an upside down tree, then there is no doubt that every record is the necessary foliage for the tree. The so-called DNS records, in fact, is a special function of a data entry. In Windows DNS, once these entries are created, they can be implemented in a variety of functions, such as creating a record, which can provide the client with a domain name to the IP forward parsing function. Of course, DNS records are divided into many kinds, each with its own purpose. Into the DNS management system that we can see here. The following figure:

Although there are dozens of DNS records listed here, there are only a few more types of records that we are exposed to.

A record

When we want to get a domain name corresponding to the IP address, or through the domain name way to access a Web page or program, at this point, we need to create a mapping between the domain name and the IP address. This relationship is the use of a record created for this name in DNS. This name can be understood as a host computer name such as WWW, its IP is 192.168.1.100, meanwhile, install IIS on this host and create a test page. When a abcdef.com zone exists on the DNS server, the primary DNS suffix of www this host is set to Abcdef.com, and now, We want to achieve in the LAN through www.abcdef.com can access the test page, then we need to do a a record in DNS, the purpose is to www.abcdef.com and 192.168.1.100 corresponding, the following figure: