computer network tutorials, wireless
communication guide, LAN/WAN guide,
local area network tools, wan introduction,
osi layers model and many other
advance topics of data communication.
This is very informative site for
the IT people specially in the field
of computer networking. You will
also find data communication overview,
tech guides , data communication
related information, topologies,
tech study guide, Router Labs, IT
certifications, Ethernet guide,
free IT resources, ip addressing
tools, telecommunication guide and
many other informative resources.
Data communication is a process
of sharing data and shared resources
between two or more connected computers.
The shared resources can include
printer, Fax modem, Hard disk, CD/DVD
Rom, Database and the data files.
computer network can be divided into a small segments
called Local Area Network (LAN), networking between
computers in a building of a office, medium sized networks
(MAN), communication between two offices in a city and
wide area networks (WAN) networking between the computers,
one is locally placed and the other can be thousands
of miles away in another city or another country in
WAN connectivity is achieved by a device known as “Router”.
The internet is the world’s largest WAN, where millions
of computers from all over the globe and connected with
is the practice of linking two or more computers or devices
with each other. The connectivity can be wired or wireless.
A computer network can be categorized in different ways,
depends on the geographical area as mentioned above.
There are two
main types of the computer networking client-server and
peer to peer. In the client dedicated server computing, a computer
plays a major role known as server, where the files, data
in the form of web pages, docs or spread sheet files, video,
database & resources are placed.
All the other
computers in the client/server networks are called clients
and they get the data from the server. In the peer to peer
networks all the computers play the same role and no computer
act as a centralized server. In the major businesses around
the world client-server networks model is in major use.
A network topology
defines the structure, design or layout of a network. There
are different topologies like bus, ring, star, mesh, hybrid
etc. The star topology is most commonly used topology. In
the star topology, all the computers in the network are
connected with a centralized device such as hub or switch.
Thus forms a star like structure. If the hubs/switch fails
to work for any reason then all the connectivity and communication
between the computers will be halted.
A common communication
language is used by the computers and the communication
devices is known as protocols. The most commonly used and
popular protocol on the internet and in the home and other
networks is called TCP/IP. TCP/IP is not a single protocol
but it is a suite of several protocols.A computer
network can be a wired or wireless and TCP/IP protocol can
work both in types of a network.Data flow or
communication can be divided into seven logical layers called
OSI layers model that was developed by Intel and Xerox Corporation
and was standardized by ISO.
2. Presentation layer
3. Session layer
4. Transport layer
5. Network layer
6. Data Link layer
a. Media access control sub-layer
b. Logical link control sub-layer
7. Physical layer
A network can
be divided into different scales and ranges and it depends
on the requirement of the organization and the geographical
location. Computer Network can be divided into Local Area
Network, Personal Area Network, Campus Area Network, Wireless
Local Area Network, Metropolitan Area Network and Wide Area
There are several communication connection methods like
HomePNA, Power line communication, Ethernet and Wifi connection
A network can also be categorized into several different
types based on the services it provides like Server farms,
Storage area networks, Value control networks, Value-Added
networks, SOHO networks, Wireless and Jungle networks.
I have explained the basic and advance data communication
technologies, Router commands, communication devices, certifications,
IP addressing basics, subnetting, networking tips, networking
interview questions, windows networking, mobile technology
and wireless computing. I have tried to cover all the hot
topics in the area of computer networking so that maximum
users can get benefit from this website.
I will warmly
welcome any suggestions, tips and unique content from my
visitors if they want to share with me.
Before working on this website, I personally visited many
networking related websites to updated my knowledge to
provide most up-to-date, unique information and best experience
to my visitors.
I have tried to add all
the good features, how tos and networking related utilities
in my website. I am hopeful that my visitors will like
this website and find it very useful for the basic and
advance data communication topics.
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