TYPES OF NETWORK
TYPES OF TOPOLOGY
• A collection of computers
and other hardware.
• Interconnected by
• Allow sharing of resources
On the basis of:
• Local Area Network
• Wide Area Network
• Metropolitan Area Network
• Client - Server
• Storage area network
• Wireless community network
LOCAL AREA NETWORK
• Connects network devices over a relatively short
• A networked office building, school, or home
usually contains a single LAN.
• Sometimes one building will contain few small
LANs (perhaps one per room).
• Occasionally a LAN will span a group of nearby
WIDE AREA NETWORK
• Spans a large physical distance. The Internet is
the largest WAN.
• A router connects LANs to a WAN.
• Exist under collective or distributed ownership
• Spans a city or a large campus.
• Interconnects a number of LANs using a highcapacity backbone technology, such as fiberoptical links.
• Provides up-link services to WAN and the
CLIENT - SERVER
• Utilizes client and server devices each designed
for specific purposes.
• Can be used on the Internet as well as LANs.
• Examples of client-server systems on the Internet
include Web browsers and Web servers.
STORAGE AREA NETWORK
• Provides access to consolidated, block level data
• Part of the overall network of computing
resources for an enterprise.
• Uses wireless technologies in an innovative
network design to provide low-cost broadband
TYPES OF NETWORK TOPOLOGIES
• Topology refers to the layout of connected
TYPES OF NETWORK TOPOLOGIES
• Each computer or server is connected to
• A signal from the source travels in both
directions to all machines connected on the
bus cable until it finds the intended recipient.
• If the machine address does not match the
intended address for the data, the machine
ignores the data.
• Inexpensive to implement when compared to
• Single point of failure
• Every node (computer workstation or any other
peripheral) is connected to central node called
hub or switch.
• The switch is the server and the peripherals are
• Easiest topology to design and implement.
• An advantage is the simplicity of adding
• The primary disadvantage ST is that the hub
represents a single point of failure.
• Set up in a circular fashion in which data travels
around the ring in one direction.
ADVANTAGES OF RING TOPOLOGY
• Reduces chances of collision.
• Additional components do not affect the
performance of network.
• Each computer has equal access to resources.
DISADVANTAGES OF RING TOPOLOGY
• Each packet of data must pass through all the
computers between source and destination. This
makes it slower than Star Topology.
• If one workstation or port goes down, the entire
network gets affected.
• A tree topology connects multiple star networks
to other star networks.
ADVANTAGES OF TREE TOPOLOGY
Expansion of Network is possible and easy.
Error detection and correction is easy.
If one segment is damaged, other segments are
DISADVANTAGES OF TREE TOPOLOGY
As more and more nodes and segments are added,
the maintenance becomes difficult.
Scalability of the network depends on the type of
• Each of the network node, computer and
other devices, are interconnected with one
• Every node not only sends its own signals
but also relays data from other nodes.
ADVANTAGES OF MESH TOPOLOGY
Data can be transmitted from different devices
Can withstand high traffic.
Even if one of the components fails there is always
an alternative present. So data transfer doesn’t get
Expansion and modification in topology can be done
without disrupting other nodes.
DISADVANTAGES OF MESH TOPOLOGY
High chances of redundancy in many of the network
Overall cost of this network is way too high.
Set-up and maintenance of this topology is very
Administration of the network is tough.