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K.P.B HINDUJA COLLEGE OF COMMERCE
Computer AssignmentT. Y. B. COM DIV B
ROLL NO. 237
Name :- Rahul Shah
A computer network, or simply a network, is a collection of
computers and other hardware components interconnected by
communication channels that allow sharing of resources and
information.
Where at least one process in one device is able to send/receive
data to/from at least one process residing in a remote device, then
the two devices are said to be in a network.
It contains more than one computer interconnected through a
communication medium for information interchange is called a
computer network.Computer NetworkLAN - Local Area Network
A LAN connects network devices over a relatively short
distance.
A networked office building, school, or home usually contains a
single LAN, though sometimes one building will contain a few small
LANs (perhaps one per room), and occasionally a LAN will span a
group of nearby buildings.
In TCP/IP networking, a LAN is often but not always implemented
as a single IP subnet. WAN - Wide Area NetworkAs the term implies,
a WAN spans a large physical distance. The Internet is the largest
WAN, spanning the Earth.
A WAN is a geographically-dispersed collection of LANs. A
network device called a router connects LANs to a WAN.
A WAN differs from a LAN in several important ways.
Most WANs (like the Internet) are not owned by any one
organization but rather exist under collective or distributed
ownership and management. MAN-Metropolitan Area NetworkThe network
size falls intermediate between LANs and WANs.
A MAN typically covers an area of between 5 and 50 km
diameter.
A MAN (like a WAN) is not generally owned by a single
organisation.
A MAN often acts as a high speed network to allow sharing of
regional resources (similar to a large LAN). It is also frequently
used to provide a shared connection to other networks using a link
to a WAN.
Network topology is the arrangement of the various elements
(links, nodes, etc.) of a computer or biological network.
Essentially, it is the topological structure of a network, and may
be depicted physically or logically.Network topologyNetwork
topologies are categorized into the following basic types:
Bus NetworkTopology.Ring NetworkTopology.Star
NetworkTopology.Tree NetworkTopology.Mesh NetworkTopology.
This diagram illustrates the bus network topology. A bus
topology such as 10Base-2 or 10Base-5 Ethernet uses a single
communication backbone for all devices.
Bus NetworkTopology
This diagram illustrates the ring network topology. A ring
topology such as FDDI or SONET sends messages clockwise or
counterclockwise through the shared link.
Ring NetworkTopology
This diagram illustrates the star network topology. A star
topology typically uses a network hub or switch and is common in
home networks.
Star NetworkTopology
This diagram illustrates the mesh network topology. A mesh
topology provides redundant communication paths between some or all
devices (partial or full mesh).
Mesh NetworkTopology
This diagram illustrates the tree network topology. A tree
topology integrates the star and bus topologies in a hybrid
approach to improve network scalability.
Tree NetworkTopology
Thank You
