Home / 🌐Internet / 📡 Networks / Computer networks What are they, what are they for and what are the most commonly used types of networks?

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Computer networks help us to optimise all the circuits in a company, and each individual who wishes to connect to a database that is elsewhere and can access it via a cable or other private public transport element.

This computer network is also used to access distant hardware, for example, a printer. Computer networks provide solutions and convenience to users in making work, costs and above all task execution time efficient.

Here you will find all the information you need to learn how to work in the different networks that exist today . We have analysed each of them so that you can choose the best one for your needs.


What is a computer network and what is it for?

A computer network is a set of two or more computers that are connected to each other through a common element (for example, a LAN cable) and each of these computers can be accessed remotely.

With this information system connected between them you can achieve among other things agility when transmitting data, print remotely, access files from other users and modify them in their database.

One of the great advantages of computer networks is that you get to broadcast by streaming. This is no small thing as many consider it a key success factor for different business tasks . For example, you can access YouTube and stream the video on some computer or smartTV, thus avoiding annoying and messy cables for people watching the video.

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In work environments, computer networks are very successful when you need to have few printers for many computers, this avoids companies spending extra money on buying hardware. Let’s say that they become more efficient since by buying a single computer they acquire the one with the best features.

What are the different types of computer networks and how do they differ?

There are different types of computer networks that are differentiated by the location of each of the interconnected computers , by the element that transmits the data among other things.

Here is a list of the computer networks that currently exist, according to their use :

LAN network

It is a local area network that has its teams connected to each other and that belongs to the same individual (it can be a company, an office, etc.). The transfer speed of data on this kind of network is 10 megabits per second (Mbps). The number of users or computers connected to the network varies, and in some cases can be as high as 800 connected computers.

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WAN Network

This is a much wider area network than the LAN, it is widely used for Internet servers where your computers are not all in one physical location. Some WANs are designed to provide public access services.

Data transfer varies, but nowadays it is of very good quality and you can send a lot of information with quite high Mbps.

MAN network

The metropolitan area network is a broadband network that provides coverage in a large geographical area . According to its technical characteristics it provides an integration of multiple services in the transmission of voice, data and video. It is considered the largest network in the world today in relation to copper pair technology, providing low latency, no magnetic interruptions and great stability.

These networks, optical fibre and twisted pair , for example, provide speeds between 10 Mbit/s or 20 Mbit/s over copper pairs, while with an optical fibre up to 10 Gbit/s can be reached. It can also be found under the name MAN BUCLE.

WMAN Network

It is a technological communication between computers in metropolitan areas, is a wireless version of the MAN network and as it happens with the mentioned network it has the great advantage of having a low cost in its installation between cables and other equipment in the physical connections between nodes.

This type of network has a considerable disadvantage, since it requires greater efforts to protect it against intruders . Its security system is not one of the best.

WLAN network

This type of network is characterized by having equipment or computers that are not connected by a cable . They are characterised by the transmission of data and communications via radio waves.

They have the characteristic of having a low cost in its installation, since the user avoids the installation of the cables for the communication between the computer equipments.

PAN Network

When the user needs a technological communication system close to his environment, this network is ideal for this purpose . Data can be transmitted in a practical and simple way without losing its speed.

It has been chosen for the many advantages it offers, including the lack of wiring in its installation. When you need to have a network connection between devices in your home, this is a good option.

SAN network

This type of computer communications is not recommended for domestic use , rather it is directed to professionals in whom it is necessary to have a connection between the communication networks of a company. It provides the common interface of any network plus a unique interface that connects to the SAN.

Wi-Fi network

We are now in a position to speak one of the words that we perhaps pronounce most often nowadays, a word that we see even in bars. It’s Wi-Fi.

Wireless Fidelity is a system that uses 802.11 wireless technology to create computer networks . The most common use of this technology is when connecting laptops to the Internet, as long as they are near an access point called a hotspot .

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The interconnection with this hotspot is done through radio frequency. The 2.4 gigahertz connection type is the most used, but we can also mention the 5 gigahertz one whose speed is higher, although with a much lower range to the connection point.


What are the most important components for creating a computer network?

With all that we mentioned before, we can now say which are the most necessary components when creating a computer network. Basically 4 resources are needed for a computer network to work:


In which the operating system that runs the network and offers the different services to the workstations or computers is executed. It has the great advantage that the computers that work with the server may not have a storage disk since the database that is on a server disk is always accessed.

For wireless networks we will talk instead about a router or switch that serves as a network bridge. The job of this team is to receive requests from the different workstations or computers.

Interface cards for connection to the server

Also called network cards , these are necessary for computers to be recognized by the server by assigning each one a specific protocol. The speed and security that the network has will depend a lot on this type of plates, in the market there are different prices and they vary by their quality and guarantee that offer the same ones.

Their job is to encode and decode the data and deliver it to the different members of the network .


As noted above, this point can be omitted for those networks where wireless communication has been chosen. When it corresponds to a wireless network radio frequency or infrared waves will be needed in some cases.

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Work stations

They can be from printers to smart phones. More elements can be added to a specific network, but the intention of our work is to show you every component that is present yes or no in any computer circuit.

What is a network topology and which are the most used ones?

A network topology is nothing more than a map for exchanging data. This topology describes the entire set of interconnections between nodes.

We could say that the network topology is a picture of all the components that exist in it from its connection to the internet service to the last computer equipment that presents it. There are different kinds of these “network photos”, we can name among the most important:

Point to Point (PtP)

It is the simplest of all as two points or two computers communicate without interference . This can be done by wiring or wireless.

Star Network

It consists of connecting all the nodes to a central server , in which everything is directly related to it. Its great advantage is that there is no interference in this scheme, while its most important problem is that when this central node fails, all the others stop.

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Tree Net

This network system is named after the physical resemblance of the map to a tree, in some places it is also called a hierarchical network . Its main feature is that the nodes need to act as repeaters , unlike the Star Network, they do not depend on a central node, thus considerably reducing the risk of failure presented by the network that is centralized in the main node.

In this type of computer connection a lot of work is done with the switches , which receive, store quickly and transmit the information to another computer.

We hope that these basic concepts will help you to make some of the computer networks you need and know that you don’t need an expert to be able to configure any of them.

If you have any questions, leave them in the comments, we will answer you as soon as possible, and for sure it will be of a great help for other members of the community. Thank you! 😉

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