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Introduction to Networking and Its Applications

It is almost impossible to imagine today’s world without computer networks. Computer networks play a very important role in our quality of life. It have made us have a different experience of life. Conversing with your mother, sending files to your friends, video chatting with your loved ones are all benefits of using computer networks. In this article, we first want to have a simple and concise definition of computer network and discuss the use of computer networks.

  • What is a network?
  • Why should we use the network?
  • What value do networks bring us?
  • What is a network card?
  • Familiarity with different types of network cards

What is a Network?

A network is a set of electronic devices such as mobile phones, computers, printers and scanners so that we can transfer information between systems on it. When we connect two or more computers through modems, routers, cables, etc. in such a way that they exchange information with each other, we have created a computer networks.

Better life with computer networks

The use of computer networks has several advantages. Some of these benefits have a significant impact on financial behavior, quality of life and speed of operations. Easy transfer of money between people over long distances, saving the company’s current costs for the purchase of various components such as printers, eliminating human-performed operations, etc. are some of the benefits of using computer networks. Here are some of the benefits of computer networking:

  • Use of shared resources (information, software and hardware)
  • Up-to-date information
  • Prevent information redundancy
  • Faster and more accurate information exchange
  • Cost savings
  • Information security

What is a network card?

NIC stands for Network Interface Card. In fact, every electronic device such as a computer needs a card to be on the network. The card is responsible for connecting to the web. So It receives the information sent from the source system and prepares it in a format that can be sent on the network, which is bytes. Similarly, one of the tasks of the card on the destination computer is to convert the received information into a format that can be understood by the computer. There are different types of cards depending on the function. For example, a wireless network card is used for mobile phones. So a wired card is commonly used for computers.

Types of computer network

Computer networking methods can vary based on scale, application, and performance, so the following classifications can be named.

  • Local area network
  • wide area network
  • Wireless Network
  • Urban network
  • Storage
  • University Networks
  • Personal networks

Each of the networks that you have read before should be according to the intended work environment. For more information, we will examine the three types of LAN, MAN and WAN.

What is LAN?

LAN (Local Area Network) is designed to communicate between computers and has a high speed of data transfer and is usually used for smaller scales such as offices, buildings. Hotels, office buildings, accommodations usually use a LAN They connect to the WAN through an Internet Service Provider (ISP) using a modem. The ISP provides a WAN IP address to the modem, and all computers on the home network use LAN IP addresses (also called private IP addresses). All computers in the interna can communicate with each other, but to connect to the Internet, they must use the same communication channel. So This communication channel is the same as the modem and the company providing Internet services.

What is a WAN?

Wide Area Network (WAN) is commonly over long distances across a country or continent. Due to the volume of information sent in this, it may use leased equipment such as telecommunications or telecommunication satellites. There are other types of computer networks that are for a variety of purposes. These classifications are often according to several key factors such as size, number of active users, speed, and so on.

What is MAN?

The MAN (Metropolitan Area Network) usually has a larger physical area than a LAN, but it should be that it is smaller than a WAN, like a city. This is usually running, an entity such as a government agency or corporation.


In this article, we knew about it and its various applications. So Computer networks have different components and that is why we have decided to serially prepare some basic concepts for you to enter the world of programming.