In network technology, a root is the starting point of a hierarchical tree topology. The root forms the central point from which the lines or logical connections are distributed. Examples include cable television and broadband cable networks.
The term root is also used in the hierarchical organization of information. Here, the root is the starting point from which information subsets branch in logical sequence. Thus, the starting point can be something general that becomes more and more specific as it branches out.
For example, if the topic of networks forms the root, then the first branch may be on the topic of local area networks, the next on Ethernet, and another on Gigabit Ethernet.
- In DNS systems, the root represents the root in the hierarchically structured namespace. The DNS root forms the starting point of the name hierarchy. The various domain levels are based on it. These are the top level domains (TLD), second level dom ains (SLD) and third level domains.
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