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What are the types of networks?


What are the types of networks?

Sometimes you might want to know everything related to the computer and the Internet, as we live in the era of globalization and technological development, so try to know the relationship between computers and networks and their components.

Networks are defined as computers, servers, central computers, peripheral devices or other devices connected to each other, and these devices work by sharing data with each other, and one of the most prominent examples of it is the Internet, that network that connects people with each other throughout the world.

Networks consist of a number of different computer systems connected to each other through physical or wireless communications; All networks allow computers or individuals to share information and resources, and computer networks serve a number of purposes, some of which include communications such as; Email, instant messaging, chat rooms, and shared devices such as; Printers, input devices, and others include serving shared data and information through the use of shared storage devices.

What are the types of networks?

Networks vary greatly in their nature and operation, depending on the actors involved, their relationships, and the level and scope at which they operate. Actors within a network may be people, families, organizations, companies, states, or a combination of individuals and groups.

Relationships between actors within a network can vary from close relationships such as those within the family to casual or impersonal interactions, and networks can exist in unstructured social environments, as well as in very formal and rule-bound settings and of many different types. for the following networks
  • Personal Area Network (BAN): The BAN is defined as the smallest and simplest network of different types of networks, as it consists of a wireless modem, one or two computers, phones, printers, and tablets, and revolves around one person in one building. Networks are in small offices or residences, and are run by a single person or a single machine organization.
  • Local Area Network (LAN): The LAN is one of the most common networks; It is one of the most original networks, and one of the simplest types of networks, LAN networks link groups of computers and low-voltage devices together over short distances, as they are linked within a building or two or three buildings close to each other, in order to share information and resources.
  • Wireless Local Area Network (WLAN): A wireless local area network (WLAN) works like a LAN network, and this network uses wireless network technology such as Wi-Fi, as it is usually used in the same types of applications that use LAN networks, and these types of networks do not require that Its devices rely on physical cables to connect to the network.
  • Campus Area Network (CAN): A CAN is larger than LANs, and smaller than MANs. These types of networks are found in universities, large K-to-secondary school districts, or small businesses, and can spread across many campuses. Buildings close to each other so users can share resources.
  • Capital Area Network (MAN): These types of networks are larger than LANs and smaller than WANs. These networks extend over large geographic areas, usually a city, and sometimes extending into a university campus. Ownership and maintenance in these networks is handled by by one person or company.
  • Wide Area Network (WAN): This network is more complex than LAN, as a WAN connects computers to each other over long distances, and a WAN also connects computers and low-voltage devices to each other remotely. over a single large network even when the distance between them is far, and the Internet is the prime example of a WAN; It connects all computers with each other all over the world, due to the extension of the WAN, it is a network that is owned and maintained by several administrators.
  • Storage Area Network (SAN): A SAN network is characterized by its high speed, as it connects groups of shared storage devices to several servers, and these types of networks do not rely on a LAN or WAN, instead these networks move storage resources away from the network They put it in their own performance-accurate network. SANs can be accessed in the same way as a drive attached to a server. Types of SANs include converged, virtual, and federated SANs.
  • System Area Network (SAN): This term is fairly new over the past two decades, as it is used to describe a relatively local area network that is designed to provide high-speed connectivity in server-to-server applications (cluster environments), storage area networks and processor applications. to the processor, and computers connected to the SAN operate as a single system at very high speeds.
  • Optical Optical Local Area Network (POLAN): POLAN is an alternative to traditional switch-based LANs. POLAN technology can be incorporated into structure cabling to overcome concerns about support for traditional Ethernet protocols and network applications such as PoE, POLAN uses optical splitters to split the optical signal. From a single thread of a single optical fiber to multiple signals to serve users and devices.
  • Private Enterprise Network (EPN): These types of networks are created and owned by companies that want to securely connect their various sites to share computer resources.
  • Virtual Private Network (VPN): A virtual private network allows its users to send and receive data by extending a private network over the Internet, through a virtual point-to-point connection, by extending a private network over the Internet.

Components of computer networks

The computer network consists of many components that are widely used in building networks, and they are as follows:
  • Server: The server is known as the most powerful computer in the local area network, and there are two types; Dedicated Servers and Undedicated Servers In Dedicated Server the server computer performs the entire network functions and services, helps to run user applications efficiently, and increases the overall cost of the system.
  • Network hardware: Network hardware is defined as the hardware used to connect network components, network cards, and cables between servers and workstations, as well as cables used to connect peripheral devices.
  • Sharing resources: Sharing resources are the resources available to both software and hardware. The most common devices are printers, hard drives, and CD-ROM drives. Among the software resources that can be shared are; Programs, files, applications, etc.
  • Workstation: Another component of a network is a workstation or client. A workstation is a single computer that has the capabilities to communicate with other devices and must be equipped with the hardware and software needed to connect to a LAN.
  • Network operating systems: Network operating systems (NOS) are defined as the logical component that controls connections and shared resources on a network, and provides distributed processing capacity. Initially, network operating systems currently provide the basis for creating client-server applications, integrating different types of computer hardware, and forming workgroups.
  • Network Interface Unit: Every computer on the network needs one additional card called a network interface card (NIC) or network interface adapter. The role of the NIC is to transmit serial signals on network cables or media. pregnancy.
  • Transmission media: The data signal is transmitted through this medium, and there are two general categories; Twisted pair, coaxial cable, and fiber-optic cable are finite media, as data signals travel within the boundaries of the transmission media, and on the other hand transmissions are transmitted via microwaves and satellites, both over the air that is not It has limits, hence it is called unlimited transmission.
  • Repeater: A repeater is defined as a communication device that connects two parts by the network; As it holds, reconfigures, strengthens and sends digital data on its way again, repeaters are often used to extend cable lengths in order to enlarge LANs.
  • Modem: It is a shortened version of the name of the extracted modification, and modem is a two-way communication means between the computer network and the telephone network, and because the wide area network uses the existing telephone network to connect to a remote network, it always uses a modern network to connect to the telephone network, the modem works to transfer digital data from The computer into useful analog signals that can be sent over the telephone network, and also the modem converts the signals from the telephone channels back into digital data suitable for the computer.