What are the types of network topology?

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 What is Network Topology?

-according to  (https://whatis.techtarget.com/definition/network-topology)  A network topology is the arrangement of a network, including its nodes and connecting lines. There are two ways of defining network geometry: the physical topology and the logical (or signal) topology.
Types of Network Topologies 

 Linear Bus Topology
A linear bus network topology.-is a type of network topology in which each device is connected one after the other in a sequential chain (shown right). In this case, the bus is the network connection between the devices, and if any link in the network chain is severed, all network transmission is halted. It works well for small networks because it is simple to set up and utilizes shorter cables since each device is connected to the next. It is a poor solution for larger networks, however since the entire network relies on each connection, and network speed is reduced as more devices are added.

 Star Topology 
Star topology
-Alternatively referred to as a star network, star topology is one of the most common network setups. In this configuration, everynode connects to a central network device, like a hub, switch, or computer. The central network device acts as a server and the peripheral devices act as clients. Depending on the type ofnetwork card used in each computer of the star topology, a coaxial cable or a RJ-45 network cable is used to connect computers together.

 Ring Topology 
- is a network configuration in which device connections create a circular data path. Each networked device is connected to two others, like points on a circle. Together, devices in a ring topology are referred to as a ring network.
Ring topologyIn a ring network, packets of data travel from one device to the next until they reach their destination. Most ring topologies allow packets to travel only in one direction, called a unidirectional ring network. Others permit data to move in either direction, called bidirectional.
The major disadvantage of a ring topology is that if any individual connection in the ring is broken, the entire network is affected.
Ring topologies may be used in either local area networks (LANs) or wide area networks (WANs). Depending on the type of network card used in each computer of the ring topology, acoaxial cable or a RJ-45 network cable is used to connect computers together.
Mesh Topology
Mesh topology-A network setup where each computer and network device is interconnected with one another, allowing for most transmissions to be distributed, even if one of the connections go down. It is a topology commonly used for wireless networks. Below is a visual example of a simple computer setup on a network using a mesh topology.



Hybrid Topology
hybrid topology is a type of network topology that uses two or more differing network topologies. These topologies include a mix of bus topology,mesh topology, ring topology, star topology, andtree topology.




source: https://www.computerhope.com/jargon/h/hybrtopo.htm




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