: The definitions
St andal one
Cl i ents
Cl i ents/Ser ver Net works
Peer to Peer Net works
: LAN (going in depth)
Advant ages and di sadvantages of LAN
The t ypes of cabl ed LAN
The most essent i al pi ece of har dware for
… The Et her net cabl e
The di f ference bet ween Et her net and cross
over cabl es
LAN Topol ogi es
Advant ages of some topol ogi es
Wi rel ess LAN ( WLAN)
Dat a t r ansmi ssi on
components and computers
by communication channels that allow
sharing of resources and information.
A computer software that can work offline and does
not need a computer connection.
An example of a standalone device can be a
Local area network usually known as LAN,
computers in a
limited area such as a home, school, computer
or office building using network media
Wide Area Network
(WAN) is a telecommunication network that
covers a broad
Business and government entities utilize WANs
to relay data among employees, clients, buyers, and suppliers from
various geographical locations. In essence this mode of
telecommunication allows a business to effectively carry out its daily
function regardless of
or system that accesses a service made
available by a
server. The server is often (but not always) on
computer system, in which case the client accesses the service
by way of a
The term was first applied to
that were not
capable of running their own stand
programs, but could interact
with remote computers via a network. These
clients of the
In the context of
server architecture, a
is a computer
program running to serve the requests of other programs, the
Thus, the "server" performs some computational task on
behalf of "clients". The clients either run on the same computer or
connect through the network.
A computer network in which one centralized,
powerful computer (called the
server) is a hub to which
many less powerful personal computers or
clients) are connected. The clients
run programs and access data that are stored on the
PEER TO PEER NETWORKING
also known as P2P, it refers
to a computer
network in which each computer in the network can act
as a client or server for the other computers in the
t allows the sharing of files with a main or client
P2P networks can be set up
a home business
and the internet.
Workstations can share peripheral devices
like printers. This is cheaper than buying a
printer for every workstations.
Networks are difficult to set up and need to
be maintained by skilled technicians.
Workstations do not necessarily need their
own hard disk or CD
ROM drives, which
makes them cheaper to buy than stand
If server develops a fault, users may not be
able to run the application programs.
Users can communicate with each other and
transfer data between workstations very
A fault in the network can cause user to lose
One copy of each application package such
as a word processor,
etc. can be
loaded onto the file and shared by all user.
If the network stops operating then it may not
be possible to access various computers
ADVANTAGES AND DISADVANTAGES
The 3 types of LAN Cables are Coaxial
cable, Optical fibre cable and twisted pair,
where as Optical fibre is
the fastest by
using the reflection of light to transfer
THE 3 TYPES OF CABLED LAN
The most essential thing for LAN is the Ethernet cable.
This cable connects all of the clients together without
this piece of hardware LAN is useless.
There are different LAN cables such as; Cat3, Cat5,
Cat5e, Cat6, Cat7 and the crossover cable.
The Cat series of cables are just different versions of the
default Ethernet cable each one is faster in its ways.
The cross over cable allows two clients to connect
directly without interference, this cable cannot be used
in replacement for a normal Ethernet cable. In a cross
over cable the wires are switched around on each end.
THE MOST ESSENTIAL PIECE OF
THE DIFFERENCE BETWEEN
ETHERNET AND CROSS
LAN has different Topologies like
Hub and Spoke (Star)
Hybrid (Bus and Star)
Point to Point (Serial)
Point to multipoint (Frame Relay)
Ring (FDDI, Token ring)
Those are the different types of LAN topologies all following a
Two advantages for Bus topol ogi es are
i s easy to handl e and i mpl ement.
i s best sui ted for smal l networks
Some advantages and di sadvantages of star topol ogi es are
Due to i ts central i zed nature, the topol ogy of fers si mpl i ci ty of operati on.
It al so achi eves an i sol ati on of each devi ce i n the network.
The network operati on depends on the functi oni ng of the central hub. Hence,
the fai l ure of the central hub l eads to the fai l ure of the enti re network.
ADVANTAGES OF SOME TOPOLOGIES
Links two or more devices to a wirelessly
transmitted HUB where the devices will
connect to the internet through the HUB.
WAN is mostly used in Businesses
allows The relaying of Data among the
clients, buyers and employees. This
mode of telecommunication allows for a
wide broad of efficiency to be carried
is the physical transfer
stream) over a point
channel. Examples of such
storage media. The data are represented
signal, such as