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What is the Internet? Advantages and disadvantages of internet !!

What is the Internet? Advantages and disadvantages of in !!.


What ​is the Internet?


what is the Internet?



If you are asked, what is the most amazing discovery in the world today? Then maybe many of us will say computer! But in today's age of information technology, the Internet is the only thing that doesn't work for us. But how much do we actually know about the Internet? What is the Internet? How does it work? The various advantages and disadvantages of the Internet.


In today's discussion we have all the detailed discussions about the Internet. What is the Internet, how does it work, what are its advantages and disadvantages, various secrets of the Internet and various known and unknown information, we have arranged this article today .



What is the Internet? How does it work? Here in detail

So let's take a look at what we're going to find out today -


  • What does internet mean?

  • What is the difference between internet and world web?

  • In what year was the Internet launched? Brief history

  • How to connect to the internet?

  • Types of internet

  • What is the use of internet

  • What are the advantages and disadvantages of internet?

  • The beginnings of the Internet in Bangladesh

  • What is the IP address

  • What is DNS, Subnet Mask?

  • Internet Protocol


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What does internet mean?


The word internet literally means internet or inner net. If we try to break down the word Internet, there are two parts. International and Network. Thus, the word Internet is formed from the word International and the word Net.


Many also consider the Internet as an acronym for Interconnected Networks. Because the Internet is basically a combination of a number of networks. Where billions of networks have been connected together through millions of routers.


This is the lexical analysis. What do we usually mean by internet? We know that the Internet is an organized form of many networks. And routers are used to connect networks. Then a combination of different IP addresses and protocols is created on the global Internet.


Simply put, the Internet is the sum of a number of networks. Which is spread like a net all over the world. And that is why it is called the Internet or the Internet. Hopefully, the meaning of internet has become quite clear to you now.



What is the difference between internet and world-wide-web?


However, many of us sometimes consider the Internet and the world-wide-web as synonyms. But in fact these two words refer to completely different things. The Internet is a structured system of hardware and software that establishes a kind of international information and communication system between computers. On the other hand, the World Wide Web is one of the services provided through the Internet.


It is a system connected by hyperlinks and URLs to collect interconnected documents and other resources.


The Internet is a network system and in contrast the World Wide Web is one of the most important and widely used services provided through the Internet. I think the point is clear to you.



What is the Internet? Advantages and disadvantages


In what year was the Internet launched? Brief history

Let us now learn some history of internet and network. We know ARPANET as the first network in the world.


This packet switching network was then developed step by step using different protocols. In 1979, the Arpanet network transported the world's first packet (part of information). The Network Information Center (NIC) was created in 1980, which took the Internet system one step further.


Then, in the late 1980s and early 1990s, commercial Internet service providers began to emerge. Thus, in 1990, the Arpanet network ceased to exist in the Internet world.


However, the Internet was turned into a commercial commodity in mid-1995, but when the NSF Net ceased to function, the final ban on commercial use of the Internet was lifted. From then on, various popular internet services started to be provided. In 1995, amazon.com and eBay became some of the most popular sites in the history of the Internet.


Google Search and Yahoo.com in 1997, then Wikipedia in 2001, Skype in 2003, Facebook in 2004, YouTube in 2005, Twitter in 2008 and Bing in 2009 made the world bigger. All in all, according to a survey of October 2020, the number of active Internet users in the world is 4. 8 billion, which is 59 percent of the world's population.


Understand how the Internet is deeply involved with us.


How to connect to the Internet?

As I said at the beginning, the Internet is basically a collection of many networks. And a few routers are used to connect all these networks together. Then how many sets of IP addresses are provided in each network. These IP addresses also have different sections. We will discuss about that later.


After each network ID is assigned a unique IP address, a combination of different protocols is attached to the network.


And the router connects the networks to each other. This is how we get internet service from all over the world from a computer or network ID. I hope you have created a leap in general.


Now the question is, how do network IDs physically connect to the Internet? To connect to the network, each device must have a nick card or network interface card on your computer or mobile phone. First of all you need to have Nick Card installed on your device to provide internet connection.


Then one end of a network cable will be attached to your Nick card and the other end will be connected to a cable modem, DSLMDmbuter.


How to connect to a network on your computer. Then you will need a router to connect your network to another network. Then you will be connected to the Internet world as soon as you turn on the data connection on your mobile or computer.


You may ask, in reality I have never seen any cable connected to mobile, then how is the internet connected? The answer is, if you want to get an internet connection on your mobile, you must go to an ISP or internet service provider. And this is what your mobile operator does. Whether you are a Grameenphone, Banglalink, Airtel or any other operator user.


In exchange these operators have to pay a charge to the service providers, which we call the purchase of internet packages. However, in most cases we get satellite internet connection service through mobile. This is discussed in detail below in the various sections of the Internet.


Hopefully, the matter is now completely clear to you.



Types of Internet:

The Internet can be basically divided into four parts based on the connection. They are-


1. Digital Subscriber Line (DSL)


2. Cable internet connection


3. Fiber internet connection


4. Satellite internet connection


1. Digital Subscriber Line or DSLঃ

DSL is a low-tech but high-speed stable wireless broadband Internet connection. Which travels along the copper telephone line. The two-wire technology connection allows you to provide broadband internet from your phone service without any interference.


Your premises or premises are connected to the service via a DSL modem, which you connect to office devices via wireless or wired local area networks (LANs).


If you have light to medium web browsing, cloud backups and file sharing, DSL is right for your business. This connection can support video conferencing and audio streaming and features fast download speeds. Simply put, the Wi-Fi connection that we have at home is basically an example of a DSL internet connection.


2. Cable internet connection:

The same connection that allows people to flip from National Geographic to ESPN for several years, the same connection can also bring a broadband internet connection to your business. Cable broadband is usually available through coaxial cables. However, newer technologies now use hybrid-fiber coaxial (HFC) connections.


If you do medium file sharing, web browsing and online backup. But only the internet is suitable for your business. This may prove to be an efficient type of connection for you when you need to use VOIP services and HD audio streaming and require moderate upload speeds and fast downloads.


3. Fiber internet connection

Fiber-optic internet connection is one of the new entrants in the broadband world. This technology gives you incredibly fast speeds and small businesses can rely heavily on this connection for their day-to-day operations. Unfortunately, this technology only exists in a few places across the United States.


If you are having a hard time with heavy web browsing, online backups and constant files like Heroku log and others. But fiber-optic will be the right internet solution for your business. Also, it can be considered as one of the best types of internet connection for frequent HD audio streaming, VoIP services, hosting servers and complex cloud-based services.


4. Satellite internet connection

Now suppose, if your business is located in a remote or rural area where there is no access to landline internet services like cable, fiber or DSL, then satellite internet connection will be your only recourse.


Notice here that, in most cases, your ISP will have a receiver dish installed pointing to the south sky.


The plate (DIS) receives data in the form of radio frequencies from space orbits or satellites, which are translated into Internet signals via a modem in your office.


Unfortunately, current satellite Internet technology cannot provide as fast speeds as cable or DSL. Because the stations are about 22,300 miles away from Earth, which is a huge amount of travel for data. On the other hand, the speed of landline internet connection is comparatively much higher.


Remember, by speed I mean the speed of the Internet, but in the case of satellite connections, network packets flow at a higher speed than landlines. However, due to the distance, it seems to us that the speed of the network is low. I think you have caught the subject.



Things you need to know before creating an organization website


What is the use of the Internet?

In today's world, about four and a half billion people use the Internet to make changes in their daily lives. Some of them have even started businesses using the internet. However, the matter is not unknown to us. Which we know as e-commerce or online business.


Now if I start writing about internet usage, I think today's article will never end. So I will try to discuss below the names of some of the notable works, without mentioning all the uses, which have made a radical change in our lives.


Find out why we usually use the internet-


  • To search for information on any topic around the world on a real-time basis.

  • To communicate or collaborate with or get in touch with others.

  • To work from office to telecommute or from home.

  • To deal with business entities.

  • To download various files remotely.

  • Get educated and entertained.

  • As social carrying.

  • To do group activities.

  • To collect operational data from remote devices (stationary as well as running).

  • To process data while flowing to the central server.

  • Get real-time data on surrounding devices, systems, weather to automate activities.

  • To design decision making methods as opposed to decision support systems.

  • To connect people, partners, machines and everything.

  • To make money online.

  • To study

  • To advertise our business.

  • To find our job.

  • Get the benefits of cloud storage.

  • If lost somewhere, find our destination through Google Maps.

  • To buy or sell any thing.


Of these uses, you may have noticed a common one. And that is communication. In fact, the main purpose of the Internet is to improve the communication system in our world. And as a result of this development, we are now able to call our world a Global Village. Where everyone is like a member of a village. Can communicate wherever happy.


So we can say that this internet is a blessing in our life.


What are the advantages and disadvantages of internet?

So far we have come to know the various uses of the Internet and how we use its benefits in our daily lives. This time we will know some advantages of internet as well as some disadvantages. You may be wondering, what could be the problem with the internet again?


As a result of the Internet, the whole world has come into our hands. Now sitting at home we can observe the whole world. However, the Internet has brought us many benefits, but its bad or bad aspects, but not to ignore at all.


The most harmful influence of the Internet is on the youth. One of the worst aspects is pornography. Which is pushing the young women of our society towards terrible perversion. As a result, the activities of young people are severely affected. And as a result of watching pornographic videos, the young people of the society are becoming sex criminals. As a result, all the heinous crimes like rape and murder are increasing in the society.


In addition to pornography, children and adolescents in our household are becoming more and more out of school due to overuse of the Internet. Which is taking horrible addiction like drug addicts. As a result of playing video games, children today do not want to go out of the house.


The time they were supposed to spend on the field is now spent sitting in one of the corners of the house, playing pubs and free fire. As a result of which, as well as their physical damage, many also become mentally ill. It is very important for our parents to be very diligent in this regard.


Another bad aspect is information theft. We currently prefer to store information on the Internet rather than storing it in notebooks. And some unscrupulous people are hacked and many people steal valuable information and threaten their lives. In fact, in this case, the Internet should not be blamed. It is an example of the dark side of our people.


No matter how bad or bad the Internet may be, I can undoubtedly admit that the Internet is one of the best things that can happen to our human society. Which has taken our generation to another level.


The beginnings of the Internet in Bangladesh


Although the world's first internet was launched in 1989, it took another 24 years for this facility to come to Bangladesh. Although Bangladesh Internet was launched in 1993, it was opened to all in 1997. But like other developed and developing countries in the world, the use of internet and information technology in Bangladesh has increased at a surprising rate.


As a result, the number of Internet users in Bangladesh now stands at 100 million or 100 million. Which is about 62% of our population. But in 2001, the total number of internet users in the country was only one lakh 86000.


We can easily predict that the number of internet users in our country will increase in the future. Because our development in internet and technology is growing very fast to meet the goal of building a digital Bangladesh by 2021. But it requires the combined efforts of all of us.



Let's find out first-


What is a network?

A network is a set of computers based on a number of digital interconnections where a common communication protocol is used. The main purpose of which is to exchange various resources between computer nodes under the network.


Interconnection between nodes is made up of a wide spectrum of telecommunication network technologies based on physically wired, optical and wireless radio-frequency methods. Which can be sorted into different network topologies. Computer network nodes can be classified in many ways, usually as personal computers, servers, networking hardware, or general purpose hosts.


They are identified by hostname and network address. Host-names serve as memorable labels for nodes, rarely changing after initial assignment. Network addresses serve to identify nodes by communication protocols, such as Internet Protocols. Hopefully, you have got an idea of ​​what a network is.


What is an IP address?


IP address means Internet Protocol address. Or to put it simply, each device that connects to the Internet needs a unique identification number to communicate with, called an 'IP address'.


An Internet Protocol address (IP address) is a number of labels that are assigned to each device connected to a computer network and uses Internet Protocol for communication. An IP address usually serves two main functions: host or network interface identification. And location address. There are currently two types of IP versions in the Internet world.


IP version 4 (IPv4) and IP version 6 (IP version 6 (IPv6)). As many of us know, IP addresses are made up of binary values ​​and run all data routing on the Internet. IPv4 addresses are 32 bits long and IPv6 addresses are 128 bits long.


However, IP addresses are written and displayed in human-readable notation, such as 172.16.254.1 in IPv4, and 2001: db8: 0: 1234: 0: 567: 8: 1 in IPv6. The size of the routing prefix of the address has been chosen by mimicking the address with a significant number of bits in the CIDR notation. E.g., 192.168.1.15/24, which is equivalent to the well-known subnet mask 255.255.255.0.


What is DNS, Subnet Mask?


DN esah DNS is full of ( Domain Name A of the System) or the Domain Name System. Domain Name System (DNS) refers to a classified and decentralized naming system for a computer, service or other organization connected to the Internet or a private network.


It associates different information with the assigned domain name for each of the participating entities. Most explicitly, it translates domain names with the intention of more easily memorizing the numeric IP addresses required for computer services and device detection and identification, including the underlying network protocol.


The main function of DNS is to translate domain names into individual IP addresses, which can be understood by computers. It also provides a list of mail servers; Which receives email for each domain name. Each domain name in the DNS nominates a set of NAM servers for the approval of its DNS records.


Subnet Mask: On the other hand, a subnet mask is used to split an IP address into two parts. One part identifies the host (computer), the other part identifies the network to which it belongs.


To better understand how IP addresses and subnet masks work, look at an IP address and see how it is organized. Subnet masks are expressed using point-decimals such as addresses.


For example, 255.255. 255.0 This is 198.51. A subnet mask of 100.0 / 24 prefix. Routers allow traffic to be exchanged between subnetworks only when the routing prefix of the source address and the destination address are different. Simply put, a subnet is a logical subdivision of an IP network.



What is Internet Protocol?


Internet Protocol (IP) is a set of protocols or rules for routing and addressing data packets, so that they can travel across networks and reach the right destination. A small piece of data traveling on the Internet is called a packet. IP information is attached to each packet and this information helps the routers to send the packet to the right place.


Each device or domain that is connected to the Internet is assigned an IP address, and packets are delivered as needed as directed to their connected IP address.


We have come to the very last stage of our article. We tried our best to create an idea on all aspects of the internet. However, it is also important to remember that the Internet may seem simple to us at the moment, but it is a very complex process. So maybe a lot of things can be left out here. Anyway, if this article is useful to you, it will be our best achievement. Many, many good wishes. Thanks.





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