Computer Network - Definition of computer networks

The introduction

computer networks are all terms that indicate one meaning. It is the definition of a computer network. A computer network is a connection between two or more devices. For example, connecting the printer to the computer to print, or connecting your personal device to the computer using a USB cable to exchange information and data. A computer network is a connection between two or more devices.

Definition of computer networks

Computer Network - Definition of computer networks

It is a system that connects two or more computers through communications network systems techniques. This connection results in the exchange of data and information resources between devices connected to the network. The computer network is one of the branches of communication networks. It can also be defined as a group of connected devices. These devices contain transmission channels and reception channels. These channels are between the computer and the devices connected to it. Thus, a network is formed. the computer. The availability of the Internet and a wired connection is necessary in completing a job.

Types of computer networks.

Personal Computer Network (PAN): This network is considered one of the simplest computer networks, as it only contains one or two devices. It is possible to connect other devices to it, such as a printer or phone. This type of network exists. Computers in homes, offices, and institutions. This computer network is within a specific range of no more than a few meters, which makes it difficult to expand. It is also possible for exchanges to take place. Resources in this network are without the need for the Internet because communication is the majority. It will be a wired connection, and at the same time, it is possible to connect wirelessly via Bluetooth, for example.

LAN local computer network: This network is one of the most famous computer networks. Through this network, several devices can be connected, provided that these devices are within the network range at a certain distance to ensure the exchange of data and information between all devices. This network can also be connected to other networks that are broader, for example, it can be connected to a WLAN network through the use of routed devices, and as an example of this network. Very fast Wi-Fi technology is available in every home.

WLAN wireless local computer network: This network is similar in operation to the local computer network that we talked about above, meaning that both networks work on the same principle, but there is one difference between them (the wireless local computer network) its connection is via Wi-Fi technology, while (the personal computer network PAN) its connection is via Wi-Fi.

WAN extended computer network: Through the WAN network, many devices can be connected to each other through this network. The range of this network is wider than the range of the above networks, as it may cover an entire country or continent, and more than that if it is supported by routers. This network is the result of merging several networks. Small and this makes this network so powerful. For example, you are in Iraq and you have a friend in Germany with whom you communicate on the Internet. This is a living example of a WAN.

City computer network MAN: This network is specific to cities and provides communication on the scale of a city or region. This network is supported by routers and wired cables to connect the largest number of networks and bridge long distances to provide good-quality communication.

SAN computer network: It is also called a storage network. This network connects a number of devices specialized in storing data and information with network servers. This network has high speed and very high performance, and then access to this data and information later after it is stored.

VPN virtual networks: It is a very private network with very high protection that is created and has a special protocol, which is popular among mobile phone users on the Internet. It is a virtual network that does not exist and its purpose is to hide the person’s identity and location. It also encrypts personal data and information and protects them from theft.

Benefits of computer networks

The benefits of computer networks are too many to enumerate, but we will mention some of them.

1. Ease of transferring and exchanging data and information between distant places by connecting different devices to each other and exchanging resources and data, thus saving money, effort and time.
2. The possibility of connecting it to the Internet, thus providing access to the computer network from all over the world.
3. The possibility of communicating easily through computer networks, as the world has turned into a small house in which it is easy to communicate and exchange resources, information and data.
4. Using computer networks facilitates marketing and advertising through multiple technologies, such as e-mail, applications, and other websites in this regard.
5. Banking services, education, news trading in various fields, and many other benefits of using computer networks.
6. Security and effectiveness: The information circulated and the data sent are highly secure through various encryption techniques that also provide quality and speed in transferring this information and data, as we explained previously.

Elements of computer networks

A computer network consists of several parts, including:

• Server: The computer will be the server or server that connects and provides the connected devices with data and information.
• Client: This is the computer that will be the session manager and responsible for managing the network.
• Mediator: It is the way devices communicate with the computer or within the network.
• Information: These are the resources, files and data that will be exchanged within the computer network.