NETWORK OF TOPOLOGY

ADVANTAGES & DISADVANTAGES

OF

TOPOLOGY

TOPOLOGY:

- Is the layout pattern of interconnections of the various elements of a computer or biological network.Network topologies may be physical or logical. Physical topology refers to the physical design of a network including the devices, location and cable installation.

BUS

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 recipient

Advantages: 

•  Since the bus topology consists of only one wire, it is rather inexpensive to implement when compared to other topologies
• since only one cable is utilized, it can be the single point of failure

Disadvantages :

• the low cost of implementing the technology is offset by the high cost of managing the network.
• If the network cable is terminated on both ends and when without termination data transfer stop and when cable breaks, the entire network will be down.

 

STAR

In local area networks with a star topology, each network host is connected to a central hub with a point-to-point connection. The network does not necessarily have to resemble a star to be classified as a star network, but all of the nodes on the network must be connected to one central device

Advantages:

• An advantage of the star topology is the simplicity of adding additional nodes

Disadvantages:

• The primary disadvantage of the star topology is that the hub represents a single point of failure

TREE

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

Advantages:

• It is most suitable for large networks where ring and star topologies are not efficient.
• Since it divides the network in sub-parts, so it becomes more manageable
• There is no hassle in either expanding or removing the nodes.
• For individual segments there is dedicated line wiring to the local hub.

Disadvantages:

• The network is vulnerable as it is wholly dependent on the central hub.
• If the network becomes extremely large it becomes difficult to manage.