Understand the type difference of the Windows 2000 DNS server area.

When creating a DNS zone, you can first create a "standard primary area", "the primary area of ​​the specification" is self-generated, readable and writable, In other words, the DNS server can withstand the registration of new users, and can also provide users with title analysis services. “The primary area of ​​the specification” is stored as a file on the DNS server that created the area. The DNS server that maintains the “primary area” is called the “primary DNS server” of the area. Assume that there are a lot of client computers in a DNS zone. In order to optimize the service for user DNS name analysis, a “DNS zone” can be created for the zone on another DNS server. The area record in the “Regional Assistance Area” is copied from the “primary area of ​​the specification” and is read-only, which means that the DNS server cannot withstand the registration request of new users, but has to be a registered user. Provide title analysis services. “Specification support area” is also stored as a file on the DNS server that created the area. The DNS server that maintains the “Registry Assistance Zone” is called “Assisted DNS Server” in the region. Since the area record of the “Assisted DNS Server” is copied from the “Primary DNS Server”, the “Primary DNS Server” is also called “Master DNS Server”. But it is not to say that as long as the "primary DNS server" is able to act as "Master Server". Assume that the area record of a “Assisted DNS Server” is copied from another “Assisted DNS Server”, then the first “Assisted DNS Server” is called “The Level of the Area”. "Assisted", and this DNS server is called "second-level assistance" in the region, and then "first-level assistance" is called "secondary support" & rdquo; Master server & rdquo;. It is possible to configure "can allow dynamic updates" in the "area of ​​the specification" area attribute. “Allow dynamic update” means that when the IP address or host name of the client computer in the area changes, the change can be dynamically modified in the DNS zone record without manual revision by the maintainer.