Do you know what is network and types of networking. And what is the history of the network. Kina knows about this very well. Many years ago, when people used to talk among themselves and send messages, even then people had only one purpose. Sharing information means sending something from one place to another. But at that time this work was not so easy.
People used to take many days to send information from one place to another. In this, people would have a lot of trouble, such as taking more time, exhaustion in traveling far and wide, sometimes information could not be reached. A question must have come in your mind, what is the meaning of this information? It can be anything like a message, text. photo, document, songs and video.
Networking is from the end of ABACUS. Then used to send reply from ABACUS. Now the same fate has happened in ABACUS Computer. Right now B is being used the same. so what's the delay now
The joining of two or more computers together is called a network. You can add to their Wire or Wireless to share data. Talking about Wire Medium, it can be anything from Twisted Pair Cable, Coaxial Cable and Fiber Optics Cable. If we talk about Wireless Medium, then it will be one of Radio Wave, Bluetooth, Infrared, Satellite
A network is a collection of many Computers, Servers, Mainframe, Network Devices. In which the work of data sharing is done in general. The most prominent example of a network is the Internet. Where millions of people stay connected and share data. Networking Devices like what is Router, Hub, Switch, Modem are all used in a network. Whatever I have explained above is called network.
Every computer connected in the network is called a node. In general, along with data sharing, we can share resource sharing like Internet, Printer, File Servers. Resource sharing means, when you go to Net cafe and Cyber cafe, then you must have seen that there are many computers connected to each other. Which we can also call Network
But one or two printers live in that cafe. Whenever you print from any computer, the print comes out from the same printer. So here with the help of network we are sharing a resource which means a printer. This is called Resource Sharing.
The world's largest network is the Internet, in which we keep sharing something everyday. Like in whats app Image, Video, Contact, song Yeh all munkin hua hai with the help of a network. By the way, when we use our phone, then everyone says that there is no network.
definition of network
From these few Criteria we can tell whether the network of the network is busy or not. That is Performance, Reliability, Security. Get to know each one in detail.
1. Performance
We can measure the performance in many ways. Special among them is Transmit Time and second Response Time. The amount of time it takes for a message to reach from one device to another is called Transmit Time. The amount of time it takes to respond to a request is called Response Time. Like you did some search in Google and the time it takes to get its result is the same response time.
Performance also depends on some other factor. What is the user, what is the transmission medium, what is the hardware and software. By the way, two networking metrics are used to find out the performance, Throughput and Delay. We generally need more throughput and less delay. That's what matters to both.
2. Reliability
It means being deaf. Unless A network is trustworthy, it can never be a good network B. Reliability means Accuracy of Delivery. As long as the data reaches the device on which you are sending it without link failure, then it is reliable. Reliability is the amount of time it takes to recover after Link Failure.
3. Security
By having security, we can protect the data from Unauthorized Access. Avoiding damage to data. It is the job of SECURITY to implement policies to avoid data lost. If it is stolen from the DATA network, then our data is not secure, we will say that. It is very important to have network security.
The network we are talking about now started many years ago in 1960 to 1970. The name of that network is ARPANET which we call Advance Research Project Agency Network. Initially, the purpose of the network was to connect terminals and remote job entry stations with the mainframe. But there was a fundamental factor in putting the concept of resource sharing in ARPANET at that time.
The ARPANET was quite reliable in that door as it used package switching technology instead of circuit switching. ARPANET also started being used in the US Department of Defense so that secret letters could be sent.
In connecting it to different universities of the US. Industrialists also started using it. Gradually he kept on developing it further. Today it has become the largest network in the world, which we call Internet.
Devices used in the network
If there is a network, then all the devices are connected in it, DATA also comes and goes, DATA passes through different computers. To connect two networks together and to connect computers to LAN. For all this we need some network devices like HUB, Repeater, Switch, Router, Modem, Bridge. know about them from the bed
Made of Modulator and Demodulator itself, MODEM. Let me explain with an example, the DATA in your computer is in digital form. We have to send this DATA to another computer through a cable. For this we have to convert digital DATA to analog.
Modulator does this work. When this analog DATA cable goes to the computer, then it has to convert this analog DATA into digital again. Demodulator does this work. It is used in telephone line
If the hostel in a college is far away from the college. College people want that they 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 gets lost.
For this, a repeater will have to be installed in the middle of the cable that will be taken between the hostel and the college. There is a limitation in the data transmission distance of each cable. By now you must have known Networking in What is network and about network devices. Now you will know the types of networks
pashto technology5
0 Comments