Computer Networking #2
Computer Networking #1
focuses on the definition of network or networking and types of networking.
Well this post is about ‘network
topology’ continue reading to know
more…
NETWORK
TOPOLOGY
In
computer networking, topology refers to the layout of connected devices.
This article introduces the standard topologies of networking.
Think
of a topology as a network's virtual shape or structure.
Network
topologies are categorized into the following basic types:
- Bus topology
- Ring topology
- Star topology
- Tree topology
- Mesh topology
BUS TOPOLOGY
In the bus topology, each computer connects to a
common cable. The cable connects one computer to the next, like a bus line
going through a city. The cable has a small cap installed at the end, called a
terminator. The terminator prevents signals from bouncing back and causing
network errors.
RING TOPLOGY
A ring topology is very similar to the bus. In a
ring, all the devices on the network are connected to a common cable which
loops from machine to machine. After the last machine on the network, the cable
then returns to the first device to form a closed loop. Messages are passed
around the ring in sequence.
STAR TOPOLOGY
Star topology is completely
different from rather a bus or ring. In star topology, each device has its own
cable run connecting the device to a common hub or concentrator. Only one
device is permitted to use each port on the hub. That is all nodes are connected
to a Central machine or to a wiring centre (such as hub). Messages can be sent
directly to their destinations from the centre.
TREE TOPOLOGY
Tree
topologies integrate multiple star topologies together onto a bus. In its
simplest form, only hub devices connect directly to the tree bus, and each hub
functions as the "root" of a tree of devices. This bus/star hybrid
approach supports future expandability of the network much better than a bus
(limited in the number of devices due to the broadcast traffic it generates) or
a star (limited by the number of hub connection points) alone.
MESH TOPOLOGY
The mesh topology connects all devices to each other. When every device
is connected to every other device, a failure of any cable will not affect the
network.
0 comments:
Post a Comment