What is a Computer Network
Well, a network is a group of computer systems connected to share resources and communicate. Additionally, a network is also a collection of devices and computers linked together via transmission media and communication devices. We will talk more about transmission media in another article, so keep an eye out for that very soon.
Utility of a network
1] Expedite communications
Because of networks, people can easily communicate with each other via email, messenger tools, chatrooms, social media, websites such as this one, online video call, and much more. If a network goes down, then all the tools connected to it will no longer operate.
2] Share connected hardware
If there are certain hardware devices connected to a network, then it becomes quite easy for those devices to be shared with all who have access to the network. For example, database files or a printer are quite common on networks, and they are known as the network’s resources.
3] Distribute data and information
Here’s the thing; if you are an authorized user, then you should have no problems gaining access to data and information stored on the network. A company such as Microsoft would have a huge database of customer information among other things, and all of this is open to employees with the right authority.
Types of computer networks
1] Local Area Network (LAN)
What we have here is a network that connects computers and devices in a small geographical area. For example, a LAN is usually located in a building. In fact, a building can have multiple Local Area Networks connected to each other.
2] Wireless LAN (WLAN)
As the name suggests, this type of network is 100 percent wireless. It relies on a router that is connected to the internet, which in turn, provides wireless connectivity to any supported devices. This network is currently in your home.
3] Metropolitan Area Network (MAN)
OK, so a MAN is all about connecting Local Area Networks in a metropolitan area. Due to the distance, connecting these networks to create a MAN is done via transmission technology, of which there are several. Coaxial and fiber are probably the most used over anything else due to cost.
4] Wide Area Network (WAN)
From what we can tell, a WAN is similar to a MAN, with the difference being the distance. In a Wide Area Network, geographically separate LANs or WANs or connected together via wireless technology, a satellite in most cases.
5] Personal Area Network (PAN)
From the name alone, you should get an idea of what this network entails. It’s a network that uses wires and wireless technology to connect computers and devices in an individual workspace. Read: What are NTP and SNMP network protocols.
6] Campus Area Network (CAN)
Usually found in universities or any company with a campus-like headquarters. The network is made possible by a series of LANs from nearby buildings. It’s larger than a regular LAN, but at the same time, smaller than a MAN.
7] Storage Area Network (SAN)
This one is super simple. Storage devices are connected together using high-speed connections. We hope this basic tutorial helps you get an idea.
