DNS Zone Delegation

DNS is a hierarchical system, and district DNS delegation layers together. A Regional delegation points to the next level down, and identifies the name of the server Responsible for lower -level domain.

In deciding whether to divide DNS name space, so that other areas, He believes the following reasons to use additional area:

• You need to delegate management DNS namespace to other parts of Tissue location or department.

• You can divide a large area in smaller areas, so you can distribute traffic load between multiple servers. This improves DNS name resolution Performance, and creates a more fault - tolerant DNS environment.

• Do you need room for expansion by adding numerous subdomains immediately to accommodate the opening of a new branch or site.