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What is a network and  its types?

What is a network and  its types?

Do you know what is the network and  its types ? And what is the history of the network. Kina knows this all too well. Many years ago, when people used to talk among themselves and send messages, people had only one goal. Sharing information means sending something from one place to another. But at that time this work was not so easy.

People used to spend many days sending information from one place to another. In this, people will face a lot of trouble, such as spending more time, fatigue to travel far and wide, and sometimes no access to information. There must be a question that comes to your mind, what is the meaning of this information? It can be anything like a message or text. Image, document, songs and video.

Networking from the end of ABACUS. Then used to send a reply from ABACUS. Now the same fate has happened in ABACUS Computer. Now B is used the same. So now we will give you complete information about what is the delay, what is the computer network. Let’s Begin.

What is a computer network – what is a network 

Joining two or more computers together is called a network . You can add to Wire or Wireless to share data. When talking about Wire Medium, it can be anything from twisted pair cable, coaxial cable, and fiber optic cable. If we talk about Wireless Medium, it will be one of Radio Wave, Bluetooth, Infrared and Satellite.

A network is a collection of many computers, servers, mainframes, and network devices. Where data sharing is generally done. The most prominent example of a network is the Internet. Where millions of people stay connected and share data. All networking devices such as router, hub, switch, and modem are used in the network. Everything I explained above is called a network.

Each computer connected to the network is called a node. In general, besides sharing data, we can share resources such as the Internet, printer, and file servers. It means sharing resources, when you go to Net cafe and Cyber ​​cafe, you must have seen that there are many computers connected to each other. which can also be called a network.

But there is one or two printers living in that coffee shop. Whenever I print from any computer, the print comes out from the same printer. So, with the help of the network, we share a resource that means a printer. This is called resource sharing.

The largest network in the world is the Internet, where we keep sharing something every day. Like in whats app photo, video, contact, Yeh all munkin hua hai song with the help of a network. By the way, when we use the phone, everyone says that there is no network.

This means that we are not in contact with other cell phones and tower. This was some info what is network in hindi. Now we will tell you about network standards.

Network definition

By these few parameters we can know if the network network is busy or not. This is performance, reliability and security. Get to know each one in detail.

1. Performance

We can measure performance in several ways. Most notable are the transmission time and second response time. The amount of time a message takes to get from one device to another is called the sending time. The amount of time it takes to respond to a request is called response time. Like I did some Google search and the time it takes to get the result is the same as the response time.

Performance also depends on some other factors. What is the user, what is the transmission medium, what are the hardware and software. By the way, two networking metrics are used to find out performance, throughput and latency. We generally need more throughput and less delay. This is what matters to both of them.

2. Reliability

This means being deaf. Unless a network is trustworthy, it can never be a good network B. Reliability means delivery accuracy. As long as the data reaches the device you’re sending it on without the link failing, it’s reliable. Reliability is the amount of time it takes to recover after a link fails.

3. Security

By providing security, we can protect data from unauthorized access. Avoid damaging data. The job of security is to implement policies to avoid data loss. If it is stolen from the data network, our data is not secure, we will say so. It is very important to have network security.

Network history

The network we’re talking about now started many years ago in the 1960’s to 1970 ‘s. The name of that network is ARPANET which we call the Advanced Research Project Agency Network. Initially, the purpose of the network was to connect remote task terminals and input terminals to the main computer. But there was a key factor in developing the concept of resource sharing in the ARPANET at the time.

ARPANET was quite reliable in this respect as it used packet switching technology rather than circuit switching. ARPANET is also being used in the US Department of Defense so that secret messages can be sent.

It is linked to various universities in the United States. Industrialists also began to use it. Gradually it continued to develop. Today it has become the largest network in the world, which we call the Internet.

Devices used in the network

If there is a network, then all devices are connected to it, DATA also comes and goes, and DATA passes through different computers. To connect two networks together and connect computers to a LAN. For all this we need some network devices like HUB, Repeater, Switch, Router, Modem and Bridge. Get to know them from bed.

HUB

What is the axis? These are the basic networking devices. This device operates in the physical layer. For this reason, you actually connect networking devices among themselves. Generally, this device is used in the network where twisted pair cable is used.

It forwards a packet to other devices without any change. Whether or not the ” data packet ” is for the device, it goes to all the devices without any worries. There are two types of HUB Active HUB and Passive HUB.

converts

What is a switch? This device also works on the physical layer as HUB. This device is smarter than HUB. HUB simply forwards the data packet but with the forwarding switch it also does the filter. That’s why it’s called clever.

When the adapter receives the data packet. Then it recognizes the address by filtering it. It forwards the packet to this machine. That’s why Switch maintains a CAM (content addressable memory) table. Where is the hardware address. CAM is also called routing table

modem

What is a modem? It is used by everyone in the internet world today. When we use the internet at home, only then the data reaches our computer from the outside world. But our computer only understands digital data as binary 0 and 1. In other cables, the data is in the form of an analog signal.

Made with the mutagen and extractor itself, MODEM. Let me explain with an example, the data in your computer in digital form. We have to send this data to another computer via a cable. For this we have to convert digital data to analog.

The modulator does the job. When this analog data cable goes to the computer, it has to convert the analog data to digital again. The extractor does the job. It is used in the telephone line.

Router

What is a router? From its name itself, you should know that it is associated with the road. Controlling the path and traffic between two networks is the job of this device. It connects the two networks to each other through a wired and wireless intermediary.

This device operates at the network layer of the OSI model. Nowadays wireless router is used more. It determines the direction of the data just like the work of the traffic police.

the bridge

What is a bridge? Since a router connects two different networks, in the same way a Bridge connects two subnets. who are from the same network. Let’s take an example. You can connect a computer lab and two floors only through the bridge.

redundant

What is a repeater? It is an electronic device. Which helps to increase the signal strength. You can also call it this, it is an electronic device that receives the signal and sends it back. Prevents repeater signal loss. Because of this, the data is maximized without getting lost.

If the hostel is in college away from college. College students want to give internet connection to hostel and college through cable. Due to the large distance, the data does not reach the receiver properly and the data is lost.

For this, a repeater must be installed in the middle of the cable that will be carried between the hostel and the college. There is a limitation in the data transmission distance for each cable. By now you must have known networking in Hindi. What is a network and about network devices. Now you will know the types of networks.

Network types 

By the way, there are many types of computer networks. They are divided according to their size, geographical area, and the number of computers that can live in a network. Starting in a small room, a network can connect computers from all over the world.

Let’s learn about types of networks in Hindi.

There are generally three types of networks: LAN, MAN, and WAN. Even after leaving those, there are others like PAN and HAN.

1. What is a Personal Area Network (PAN)

This network is also called PAN. This is a small network that has its limits inside the house. For example, in a building, one or more computers are in the PAN. Besides this phone, a video game and some other devices are connected.

2. What is a Home Network (HAN)

If some people in the same residence are using the same network, we can call it the main area network. It is also called HAN. It usually has an internet connection from WIRE. It is connected to a modem. This modem provides both wired and wireless connectivity. You can do all these things in this network. WIFI is also a local area network.

  1. You can get the printout of the document out by sitting in any corner of the house.
  2. You can also upload and download images
  3. Besides online video sharing, you can also do video streaming.
  4. There is not much difference between PAN and HAN.

3. What is a Local Area Network (LAN)

LAN means local area network. You will find this network everywhere like office, college, school, business organization. This network is used to share resources, store data, and print documents. To do this, not a lot of hardware is needed, only a hub, a switch, a network adapter, a router and an Ethernet cable are needed.

The smallest LAN can be made from only two computers. We can connect 1000 computers in a LAN. Mostly LAN is used in wire connection. But nowadays it is also used in wireless. The specialty of this network is its speed, low cost, and security. An Ethernet cable is used in this.

This network is for sharing and printing documents in the office. What happens in document sharing? There is a central server where all files are saved. Any employee can access the file without going there.

If someone wants to print as well, they can print with the central printer. This is the feature of LAN. This is called resource sharing.
If the local area network is wireless, it is called wireless LAN.

USP

  • It is limited to a small geographic area
  • Use at home, office and college.
  • Written private
  • This network can be created easily
  • The data transfer speed of this network is high

4. What is a metropolitan area network (MAN)

You can also speak to the Metropolitan Area Network or MAN. This is a network that connects an entire city. This network connects all the colleges, schools and government offices small and large in the city. MAN is a larger network than LAN.

Leg covering from 10 km to 100 km. It is used to create a large network by connecting many local networks together.

If these networks are used on a university campus, it is called a campus area network. The best example of this is the cable television network. MAN is used to connect the LAN to the LAN. Any large commercial enterprise becomes its own man. With which to connect its various branches.

USP

  • Its distance is limited in a large geographical area such as town and city.
  • It is public and private property.
  • Installing this network costs more than LAN.
  • The data transmission speed is moderate.

5. Wide Area Network (What is a WAN)

The network that comes after LAN and MAN is the wide area network. By the way, this is the largest network that keeps computers from all over the world connected. It is also called WAN. Wide area network is called LAN of LANs.

The specialty of this network is that it has a low data rate, but it covers a greater distance. The best example of a wide area network is the Internet.

There are two types of WAN 1. Enterprise WAN and 2. Global WAN. Computers connected to a wide network mostly use public networks such as telephone lines, leased lines, and satellites. The largest WAN is the Internet.

By the way, there are many wide networks. Such as the public packet network, the large corporate network, the military networks, the banking networks, the railway reservation network, and finally the airline reservation network.

The company that provides network facilities through a WAN is called a network service provider. They are called the core of the Internet. WAN is said to be the most expensive network. Because some of this technology is used in it. Such as SONET, Framerelay and ATM.

USP

  • Large geographical area such as two countries in Absa can connect to this network
  • Owned by public and private
  • This network is difficult to install and maintain.
  • The data transfer speed is slow ह

What did you learn today?

Friends, today’s information is very important. Where there is a lot of information about the network. Like what is a network (what is a network) . It is very important for everyone to have knowledge of networks. Everywhere we are surrounded by networks.

By the way, it will be easy for students to understand these networks in Hindi as well. You are now connected to a network, so you can read my article. I hope you liked this article, you should tell below how you felt. If you want to ask any question now, definitely write in the comment box below.

 

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