The word Internet is not new to us, we have heard about it. Before we can understand the Internet, we need to know what a network is. When two or more computers are connected to each other via wired or wireless media or data or programs from one computer to another can be run, we call it a network. A network is a network between computers and is of three types depending on the size.

1) Local Area Network

This is the smallest network. Such a network may be spread over a few kilometers in a house or campus. This is the network we have seen in offices, schools, campuses, etc.

2) Municipality Area Network

This is the largest form of network LAN. Not only 2-4 houses but such networks may be spread all over the city.

3) Wide Area Network

Such a network occupies a large geographical area. It usually spreads across the country or continent. It is much larger in size than LAN and MAN.

The Internet is connected by connecting two or more networks. The developers may not have even thought about the unprecedented popularity of the Internet today.

How to Using Internet in devices?

How to use internet on mobiles: -

You need to tap on the SSID of the internet network on your mobile. If the password is set in the network, the Internet is connected by asking the password on the mobile. Then you can use internet on mobile.

How to use internet on computer: -

Three things are needed to connect our computer to the Internet or to run the Internet in general terms.

1. Computer

2. Router (modem)

3. Telephone line

4. Internet account

5. Internet wire

To run the internet, you have to follow the points given below.

1. Internet Service: -

An internet account can be opened by paying a certain amount of money to any company that can provide internet service. We can get internet facility from Nepal Telecom, WorldLink Communications, Vianet etc. Such companies are called Internet Service Providers (ISPs). You need to contact these companies for internet connection. These companies have packages according to their internet speed. Of these, you need to buy the package you need. In addition, these companies charge a monthly fee. Tariffs vary according to the speed of the Internet. After purchasing the package, these companies will connect you to your home, office, association or place where you are looking for internet connection.

2. Router to be connected: -

A router is also required for internet connection. The router has to be from the market. Its price is usually above Rs 2,000. The router must be connected to the device or wire provided by the company. You also need to make some settings on the router. These settings are provided by the company itself. But you can manage the SSID and password to access the Internet on the router. For that you need to login to the router. After logging in, you have to type SSID and password in the router and save. You can even hide the network (SSID) from the router without anyone noticing. The number of ports in this router can be connected to the Internet. The number of these ports may vary depending on the capacity of the router.

3. Connect the internet cable connected to the router to the computer: -

After connecting the wires to the router, the internet wire should be connected from the router to the computer. This wire is called Ethernet cable (Rj-45) cable. Even this wire has to be bought from the market. It is priced at Rs. 20-30. Connectors have to be connected at both ends of the wire. Only a technician who knows how to connect this connector to the end of the wire can connect. After connecting the connector to the wire, one end of the wire must be connected to the router and the other end must be connected to the computer to run the Internet on the computer. The Internet runs when an Ethernet cable is connected to a computer.

Rj-45 Connector


RJ-45 (Ethernet) Cable




Once connected to the Internet, we can view websites with the help of different browsers. Open any browser like Internet explorer, Netscape Navigator, Opera, Mozilla Firefox and click on the name of the site you want to see in its address bar and that site will open in our browser. For example, if you enter the online news address www.onlinekhabar.com, the home page of the newspaper will open in our browser on the Internet.



How to change Wifi password, SSID on Router (TP-Link Router) and how to change Wifi Password and SSID name of Router?

It is best to change the password and wifi network (SSID) name of the router you are connecting to from time to time. To keep and change the password, SSID, do the following.

To keep and change Wifi Password and SSID: -

Step 1: - Open the web browser.

Step 2: - Enter the IP address (192.168.1.1) of the router in the Web address bar. The IP address is on the back of the router. Additionally, if you type ipconfig into the CMD, you will find the IP address of the router in the default gateway. Checking the IP address of my router showed 192.168.1.1. So I enter 192.168.1.1 in the web address bar.






Step 3: - Login page for Router opens. Unless the username and password for login of the router is changed, the router of Tp-Link has username by default and admin in password. So enter admin in username and password.



Step 4: - Dashboard of Router appears open. Click on the option in Soma Interface Setup. Then you have to click on the Wireless option from the submenu. Then at the end of the page select the AES option from Encryption, type the password you want to put in the Pre-Shared Key and click on the Save button.

Step 5: - In the same way you have to type the name of the network you want to keep under SSID on the same page and click on Save button.



You must then close and reopen the router.





Then your Wifi password changes. This way you can change the password and SSID of Tp-Link Router using the method mentioned above.

How was the Internet invented? (Who invented the Internet?)

The Internet is not just a network in itself, but a group of different networks spread across the globe working on a set of rules and providing the same facilities. The Internet has not started as planned by any individual or organization. Similarly, the internet is not under anyone's control. As you explore the history of the Internet, you will come across the ARPANET developed by the United States.

Towards the end of the Cold War in the late 1950's, the United States was forced to develop a network that would be able to operate reliably in any type of war. All the telephone systems used at that time used to work at the central level, which was very insecure.

The entire telephone system could have been destroyed if the telephone center had been attacked. Therefore, as an alternative to the telephone network system, the US Department of Defense commissioned RAND Corporation to develop a secure and reliable network system.

An engineer named Poul Baran of RAND Corporation came up with the concept of a decentralized network system based on switching technology. Baran sent several reports to the Pentagon in the United States, which eventually assigned AT&T, the largest telephone company in the United States at the time, to develop the network. But big companies like AT&T could not believe the technology developed by ordinary people like Baran.

That's how the concept of decentralized network system based on switching technology came to be. After failing to develop a reliable network system for a long time, the US government launched an organization called the Advanced Research Projects Agency or ARPA.

Around 1967, ARPA director Larry Roberts introduced the concept of a network system based on pocket switching, as developed by Poul Baran. He also built a network system called ARPANET based on this technology. This technology could connect two computers in different locations. In this way, a computer called Interface Message Processors (IMP) was connected to the computer for exchanging information. Information was exchanged between these two IMPs at different speeds at a speed of 56 kW.




The ARPANET network system was first connected to the University of California, Cambridge Research Center, UCSB and UTAH University. By the mid-1970's, MIT, BBN Harvard, and Systems Development Corporation had joined the network. In the years that followed, many other organizations and universities joined the network. This form of ARPANET was the beginning of the Internet. But it is certainly not as easy to use the Internet as it is now. This ARPANET was used by cable computer scientists, engineers and scientists.

In 1972, Ray Tomlinson invented email, perhaps the most important invention of the Internet. He also chooses the famous हुने to be used in the email address. In addition, telnet was used to operate computers on the network and FTP was used to exchange files. Despite the development of the Internet, there was no definite system for exchanging information. In the 1970's, BOB Kahn and Vint Cerf of Stanford University developed an information exchange system called TCP / IP, which is still used today. The first organization to use this system was the US Department of Defense. By 1983, everyone connected to the Internet was using the TCP / IP system. By the end of the 1980's, many business associations began to connect to the Internet, which accelerated the development of the Internet.

Despite the development of the Internet, until the early 1990's, the Internet was used only by researchers, the public sector, and universities. The Internet was not easy for the general public to use. But in 1990, the World Wide Web, developed by Tim Barners Lee, a scientist at the CERN Research Center, opened a new door to the Internet. We also know the World Wide Web by the name of www. Many people call www the internet, but this is a misconception. The Internet refers to a group of networks around the world, while www is one of the many systems used to exchange information on the Internet. Although the creation of www made it very easy to exchange information on the Internet, it was not possible to access the Internet by clicking like now. Click-to-click Internet software, known as Browser, was developed by Marc Andreessen, a researcher at the National Center for Super Computer Applications in Illinios. The name of this first browser was Mosaic. Later, Marc Andreessen also started Netscape Corporation, an Internet browser called Netscape Navigator, which became very popular.



Following the success of this Internet browser, Microsoft also developed a browser called Internet Explorer, which is now one of the leading browsers. The US government has invested heavily in the development of the Internet, which previously did not allow the public to use the Internet. But after the success of www, many internet providers opened up and developed their own network without relying on government networks.

By 1995, the US government had repealed all restrictions on Internet access. Popular internet providers like AOL, Prodigy and CompuServe started in the US. The Internet is also being used worldwide. To this day, the Internet has come a long way. Starting with 4 computers connected to ARPANET, the Internet now has more than 1 billion users connected at a time. The development of the Internet is still going on and there is no doubt that in the future there will be a faster and more advanced Internet.