TOPOLOGY: Is the physical or logical way the computers are joined together by a channel to form a network. The goal is to form a network. So the joining of different computers together to form a network is called topology.
Types of topology will be discussed below under different Segment. The reason why each segment, will be discussed this way is because of students preparing for exams or test.
EXPLAIN WITH THE AID OF A DIAGRAM THE FOLLOWING NETWORKTOPOLOGY.
A. Bus topology/network.
B. Star network
C. Ring network (token ring)
D. Mesh network
E. Tree network
F. Hybrid network[A] Bus topology/network: In local area networks where bus topology is used, each node is connected to a single cable. Each computer or server is connected to the single bus cable. A signal from the source travels in both directions to all machines connected on the bus cable until it finds the intended recipent. If the machine address does match the intended address for the data, the machine ignores the data. [B] Star network: in star topology every node ( computer workstation or any other peripherals) is connected to central node called hub or switch. The switch is the server and the peripherals are the clients. The network does not necessarily have to resemble a star to be classified as a star network, but all of the network must be connected to one central device. [C] Ring network (token ring) : A network topology that is set up in a circular fashion in which data travels around the ring in one direction and each device on the right acts as a repeater to keep the signal strong as it travels. [D] Mesh network: The value of fully meshed network is proportional to the exponent number of subscribers, assuming that communicating groups of any two endpoints is up to and also including all the endpoints. It’s also known as Reed’s law. [E] Tree network: The type of network topology in which a central ‘root’ node ( the top level of the hierarchy) is connected to one or more other nodes that are one level lower in the hierarchy (i.e the second level nodes and the top level central ‘root’ node, while each of the second level nodes that are connected, to top level central ‘root’ node will also have one or more other nodes that are one level central ‘root’ node being the only node that has no other nodes above it in the hierarchy ( the hierarchy of the tree is symmetrically ) [F] Hybrid network: Hybrid networks use a combination of any two or more topologies in such a way that the resulting network does not exhibit one of the standard topologies ( e.g bus, star, ring etc) for example, a tree network connected to a tree network is still a tree network topology.
STATE TWO (2) ADVANTAGES AND DISADVANTAGES OF BUS TOPOLOGY
1. Very easy to connect computer on a straight network.
2. Require less cable length than a star topology.
3. It could be increased by having long cable being joined together by connectors.
STATE TWO (2) ADVANTAGES AND DISADVANTAGES OF MESH
STATE TWO (2) ADVANTAGES AND DISADVANTAGES OF TREE TOPOLOGY