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What is network topology, types and their advantages and disadvantages?

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

Advantages

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.

Disadvantages

1. if the entire network get shut down it’s going to be difficult to troubleshoot.

2. If there’s break down with one cable the entire network get shut down.

3. Network performance degrades under heavy load.

STATE TWO (2) ADVANTAGES AND DISADVANTAGES OF STAR TOPOLOGY

Advantages

1. When a node fails there’s no network disruption.

2. Easy to install

3. Easy to detect fault and remove part.

Disadvantages

1. Require more cable length than bus

2. If the hub fails, all the network are affected.

3. More expensive because of cost of central device cables

STATE TWO (2) ADVANTAGES AND DISADVANTAGES OF MESH

TOPOLOGY

Advantages

1. Use of dedicated links eliminate traffics problem.

2. One node failure can be redirected to another i.e reliable for backup.

3. Message sent takes any possible shortest, easiest to reach, destination.

Disadvantages

1. Waste of bandwidth.

2. Cost of installation and maintenance is high ( because it needs more cable)

STATE TWO (2) ADVANTAGES AND DISADVANTAGES OF RING TOPOLOGY

Advantages

1. Ring topology is better than star topology under heavy network.

2. It can be increased easily i.e more computers can be added to access a single network.

3. It can span longer distance.

Disadvantages

1. It’s faster than star but slow compared to Ethernet network.

2. A node failure can cause the entire network redundant.

3. During the process of adding computers together the network usually breaks.

STATE TWO (2) ADVANTAGES AND DISADVANTAGES OF TREE TOPOLOGY

Advantages

1. Point to point wiring for individual segments.

2. Supported by several hardware and software vendors.

Disadvantages

1. Overall length of each segment is limited by the type of cabling used.

2. If the backbone lines breaks, the entire segment goes down.

Oluwamuyide Peter

My name is seyi, the main aim of creating this platform is to help users get information like school updates, electrical engineering topics and many more for free

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