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Special Edition Using TCP/IP, Second Edition by NIIT

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Naming Conventions Used in DNS

The host names or the computer names that are used in DNS must follow the hierarchical structure of assigning names to hosts as defined by the NIC. In the hierarchy that is defined by NIC, computers are grouped into smaller manageable units called domains. The hierarchy starts with the root node. The label of the root node is left blank. Under the root node is a standard set of domains (see Figure 13.3), which have been created based on the type of the organization.

Figure 13.3. All the internetworks that are created must follow the naming conventions defined in the domain naming hierarchy specified by NIC.

These domains are represented by a three-letter code. An example of a three letter is .com, which ...

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