What is a computer network
Computer networks are the basis of computer communication. They are used in many ways and can contain many types of systems. A computer network is a group of computers that are connected to exchange information. The earliest examples of computer networks date back to the 1960s, but they have come a long way in half a century.
Types of computer networks are the most frequently discussed topic. Let's get an idea of what a computer network is. We can define a computer network as a group of interconnected computing devices to communicate and share their resources and data. It connects via cable or wireless media.
Network types can be defined based on the size of the network, its capabilities, and geographic coverage. We can classify types of computer networks based on these critical factors. The computer network can be defined as follows: LAN, MAN, WAN
LAN (local area network)
LAN is one of the simplest computer networks. A local network can installed in an office building, in schools, colleges, houses or in nearby buildings. The LAN is a beneficial network for sharing resources such as printers, scanners, data storage, etc. A local network can be wired or wireless. Typically, wired LANs are uses for speed and security. When a LAN is entirely wireless, it is called WLAN. You can connect at least two devices in a local network and up to 16 million devices. A LAN can consist of low-cost routing and network devices. LAN speed ranges from 10 Mbps to 100 Mbps. LAN creation uses different network topologies. ARCNET and Ethernet are examples of local networks.
MAN (Metropolitan Area Network)
MAN is a relatively new computer network. It covers more geographical areas than the LAN. A metropolitan network extends over a city and uses the same technology as a local network. Its geographical area rarely extends over 100 kilometres. This computer network contains various hardware and transmission media. It can be a combination of several LANs in a vast network of shared resources or a single system like a cable television network. Metropolitan Area Network is based on the IEEE 802.6 DQDB (Distributed Queue Dual Bus) standard. Safety and standardization are two important things in a MAN. Security is required for information sharing between different devices and standardisation is necessary to ensure reliable data communication.
WAN (extended network)
WAN is the most complicated computer network. Computer peripherals can communicate over a wide geographic area, even if they are far enough apart. The Internet is the most common example of a geographic network that connects computers around the world. This type of computer network uses routers to transfer data quickly and securely. LANs are connected to the WAN through routers that manage IP addresses. Geographic networks are more complex and controlled by collective and distributed owners and administrators. Frame Relay, ATM, X.25 are technologies used by WAN networks for remote connectivity.
In addition to significant computer networks, there are many other popular computer networks:
WLAN (wireless LAN)
WLAN is the most popular type of computer network called Wi-Fi. Wireless LANs provide wireless network communication over a short remote area using radio or infrared signals instead of traditional network cabling. Allows mobile devices to connect to the local network via Wi-Fi. By combining a device called AP (Access Point), you can prepare a wireless LAN. WEP technology is used to increase the level of security in a wireless LAN.
PAN (personal network)
A PAN is a type of computer network that revolves around a single space or a private space. It covers an area less than 10 meters. This type of computer network includes mobile computers. This type of network can be wired or wireless.
CAN (campus network)
CAN is a computer network that covers a small personal space. This type of computer network is suitable for universities, corporate offices, etc. where several local networks are connected in a particular area.
Computer networks are the basis of computer communication. They are used in many ways and can contain many types of systems. A computer network is a group of computers that are connected to exchange information. The earliest examples of computer networks date back to the 1960s, but they have come a long way in half a century.
Types of computer networks are the most frequently discussed topic. Let's get an idea of what a computer network is. We can define a computer network as a group of interconnected computing devices to communicate and share their resources and data. It connects via cable or wireless media.
Network types can be defined based on the size of the network, its capabilities, and geographic coverage. We can classify types of computer networks based on these critical factors. The computer network can be defined as follows: LAN, MAN, WAN
LAN (local area network)
LAN is one of the simplest computer networks. A local network can installed in an office building, in schools, colleges, houses or in nearby buildings. The LAN is a beneficial network for sharing resources such as printers, scanners, data storage, etc. A local network can be wired or wireless. Typically, wired LANs are uses for speed and security. When a LAN is entirely wireless, it is called WLAN. You can connect at least two devices in a local network and up to 16 million devices. A LAN can consist of low-cost routing and network devices. LAN speed ranges from 10 Mbps to 100 Mbps. LAN creation uses different network topologies. ARCNET and Ethernet are examples of local networks.
MAN (Metropolitan Area Network)
MAN is a relatively new computer network. It covers more geographical areas than the LAN. A metropolitan network extends over a city and uses the same technology as a local network. Its geographical area rarely extends over 100 kilometres. This computer network contains various hardware and transmission media. It can be a combination of several LANs in a vast network of shared resources or a single system like a cable television network. Metropolitan Area Network is based on the IEEE 802.6 DQDB (Distributed Queue Dual Bus) standard. Safety and standardization are two important things in a MAN. Security is required for information sharing between different devices and standardisation is necessary to ensure reliable data communication.
WAN (extended network)
WAN is the most complicated computer network. Computer peripherals can communicate over a wide geographic area, even if they are far enough apart. The Internet is the most common example of a geographic network that connects computers around the world. This type of computer network uses routers to transfer data quickly and securely. LANs are connected to the WAN through routers that manage IP addresses. Geographic networks are more complex and controlled by collective and distributed owners and administrators. Frame Relay, ATM, X.25 are technologies used by WAN networks for remote connectivity.
In addition to significant computer networks, there are many other popular computer networks:
WLAN (wireless LAN)
WLAN is the most popular type of computer network called Wi-Fi. Wireless LANs provide wireless network communication over a short remote area using radio or infrared signals instead of traditional network cabling. Allows mobile devices to connect to the local network via Wi-Fi. By combining a device called AP (Access Point), you can prepare a wireless LAN. WEP technology is used to increase the level of security in a wireless LAN.
PAN (personal network)
A PAN is a type of computer network that revolves around a single space or a private space. It covers an area less than 10 meters. This type of computer network includes mobile computers. This type of network can be wired or wireless.
CAN (campus network)
CAN is a computer network that covers a small personal space. This type of computer network is suitable for universities, corporate offices, etc. where several local networks are connected in a particular area.
Read Also: Wireless area network
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