In hierarchical topology having a single or much less nodes on top level in a very large network like data center, there exist a chance for network congestion and a small portion of available bandwidth is supported for end hosts.
● Flat: where all the interconnection equipment have the same functions. Topology is easier to implement and has a great ease of management, provided that the network does not increase, then being recommended for small networks. ● Hierarchical: In this model the topology is divided into discrete layers, and each layer is focused on a set of specific functions, allowing the choice correct equipment for each layer. A typical hierarchical topology is composed of layers of core, composed of high-tech equipment, optimized for performance and availability, distribution, where they are concentrated equipment that control the flow of information across the network and access layer, formed by equipment that provides the connections for the network users. Rafael Carvalho
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Mesh topology is reliable and robust as failure of one link doesn't affect other links and the communication between other devices on the network. 3. Mesh topology is secure because there is a point to point link thus unauthorized access is not possible.
star topology,bus topology,ring topology,mesh topology etc...
In hierarchical topology having a single or much less nodes on top level in a very large network like data center, there exist a chance for network congestion and a small portion of available bandwidth is supported for end hosts.
The main advantage of ring topology is that data flows in a singular direction, eliminating collisions. However, if one node in the ring breaks down, the entire network ceases to function.
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A network structure is more a star topology whereas a Hierarchical structure is like a tress... Allowing you to drill down to get to an answer.
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hierarchical (extended) star topology
Four collision domains are present Two broadcast domains are present.
The advantage is in fault detection; in a bus topology any break in any wire segment would cause the entire LAN to fail. With a star topology, a break in any wire segment only affects the one client connected to the network.
hierarchical databases are fast and conceptually simple however do not support many-to-many relationships and have a lack of referential integrity. dan woodfield was a creater of Hierarchical Databases
Some advantages of tree network topology include easy to set up and extend. It is also inexpensive. Its disadvantages, on the other hand, include limit on central cable length and number of nodes.