Communication and Computer Networks. Prerequisites. Before proceeding with this tutorial, you need a basic understanding of Computer. You should know the. 13 Jul A computer network is a collection of computing devices that are connected with each other for the purpose of information and resource sharing. 5 Jun Computer Networks – Computer Networks – Computer Network Video Tutorial – Computer Network in simple and easy steps starting from basic.

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LAN provides a useful way of sharing the resources between end users.

The network also provides the facility to access databases located remotely. Create files and store them in one computer, access those files from tutorialspoinr other computer s connected over the network. A computer can be connected to another one via a serial port but if we need to connect many computers to produce a network, this serial connection will not work.

Most branded computers have network card pre-installed. This service enables its users to expand their Local Area Networks. A router is a type of device which acts as the central point among computers and other devices that are a part of the network. Local Area Network or simply LAN is the technique of interconnecting a few computers located in a given premise. It may contains local servers serving file storage and other locally shared applications. It is normally used for a single business office or a residential apartment.


Network cables are required to provide network access.

Data Communication & Computer Network

LANs are composed of inexpensive networking and routing equipment. Computers automatically detect USB card and can install the drivers required to support the USB network card automatically. After completing this tutorial you will find yourself at a moderate level of expertise in Data Communication and Computer Networking from where you can take yourself to next levels. Now-a-days router comes in wireless modes using which computers can be connected without any physical cable.

Ethernet is most widely employed LAN technology and uses Star topology, while Token-ring is rarely seen.

DCN – Computer Network Types

Generally, telecommunication networks are Wide Area Network. To inter-connect various continents, fibers are laid under sea known to us as submarine communication cable. Network card is a necessary component of a computer without which a computer cannot netwoks connected over a network. Wireless and USB based. The best-known computer network is the Internet. A network of networks is called an internetwork, or simply the internet.

Computers and other devices are connected to a router using network cables. As the name suggests,the Wide Area Network WAN covers a wide area which may span across provinces and even a whole country. Network cards are of two types: LAN uses either Ethernet or Token-ring technology. Vomputer the help of networking, the communication system has now become highly efficient, frugal, and fast. A network can be as small as distance between your mobile phone and its Bluetooth headphone and as large as the internet itself, covering the whole geographical world.


The different modes of communication are text chatting, video chatting, emails, etc. Wireless network card needs to be inserted into the motherboard, however no network ocmputer is required to connect to the network. For example, MAN can help an organization to connect all of its offices in a city. Since they are equipped with very high speed backbone, WANs use very expensive network equipment.

This tutorial has been prepared for the computer science graduates to help them understand the basic to advanced concepts related to Data Communication and Computer Networking. Internet uses very high speed backbone of fiber optics.

Computer Networking

At huge level, internet works on Client-Server model. Metro Ethernet is a service which is provided by ISPs.

Metropolitan Area Network or simply MAN is a system of network that normally covers a large metropolitan area tutorizlspoint part. Internal and External Network Cards.

A computer network spanned inside a building and operated under single administrative system is generally termed as Local Area Network LAN.

This may include Bluetooth enabled devices or infra-red enabled devices.