Types of Computer Networks. What is a network? MAN, WLAN, WMAN, WWMAN, SAN, PAN

At present, it is almost impossible to think of a world where computer networks do not exist, since over the years  they have become absolutely essential for everything to function as it should,  from hospitals and shopping centers, to the most great of the networks: Internet. Types of Computer Networks types of computer networking advantages of computer networking importance of computer networking

At first, computer networks were used in a limited number of applications, most of them military or scientific, but their use has expanded from this area to the office, industry and home, resulting in the creation of various types of networks, each adapted to the specific needs of the environment.

In this post we will find information and characteristics about the main types of networks that we access in our daily work, perhaps even without realizing it. types of computer networking

We recommend you read Difference between LAN and WAN

MAN Network (Metropolitan Area Network) Types of Computer Networks

MAN or Metropolitan Area Network , whose translation into Spanish is  Red de Area Metropolitana,  is a data network specifically designed to be used in areas of cities or towns. The first characteristic, speaking in terms of geographic coverage, is that  Metropolitan Area Networks or MANs  are larger than  local area networks or LANs , but smaller in geographic scope than  wide area networks (WANs). types of computer networking

MAN are characterized by very high-speed connections  using fiber optic cable or other digital media, which allows it to have  a much lower error rate and latency than other networks armed with other types of conductors.  They are also very stable and resistant to radio-electric interference. types of computer networking

This fact makes metropolitan area networks very suitable for multimedia traffic environments, which allows, among other things, to  implement surveillance systems through video cameras  with a very significant cost / benefit ratio. importance of computer networks

WLAN (Wireless Local Network) network Types of Computer Networks

 Wireless Local Area Network,  better known as  WLAN , is basically a data transfer and communications system which  does not require that the computers that compose it have to be wired together,  since all the data traffic between them is performed through radio waves. types of computer networking

Although they are less secure than their wired counterpart, they offer a wide variety of advantages, and that is why their implementation grows day by day in all areas. types of computer networking

However,  the most outstanding feature of wireless networks is the savings in the laying of cables for the interconnection of the PCs  and devices that compose it, since it does not require any cable for its interconnection, a great advantage for the home , the office and SMEs. types of computer networking

WMAN (Wireless Metropolitan Network) network  Types of Computer Networks

In very basic terms,  the WMAN or Red Metropolitana Inalámbrica  for its translation into Spanish, is a wireless version of  MAN , which can have a range of tens of kilometers. This technology uses techniques based on the WiMAX (Worldwide Interoperability for Microwave Access) communications standard  .

Network WWAN (Wireless Local Area Network) Types of Computer Networks

Wireless WAN or Wide Area Wireless Network  is a network that is capable of providing wireless coverage in a relatively large geographic area. Basically, a  WWAN  differs from a  Wireless Local Area Network  or  WLAN  in that the first of them uses cellular network technologies for mobile communications such as  WiMAX, UMTS, GPRS, EDGE, CDMA2000, GSM, CDPD, Mobitex, HSPA and 3G  to perform the transfer of data between the nodes that make up the network. It may also be that we find the possibility of using LMDS and autonomous Wi-Fi to access the internet. types of computer networking

advantages of computer networking
advantages of computer networking

Network SAN (Storage Area Network) Types of Computer Networks

A  SAN  or  Storage Area Network,  which translated into Spanish means the  storage area network,  is a technology widely used by large companies to obtain greater flexibility in obtaining and handling the data it needs for its development. types of computer networking

Basically,  a SAN is a network made up of storage units that are connected to the companies’ local area networks,  and the main characteristic, without going into overly complicated technicalities, is that they are capable of unlimited growth, so can offer its operator incredible storage capacities of up to thousands of TB.

Red PAN (Personal Area Network) Types of Computer Networks

A  PAN network , abbreviation of the English Personal Area Network, and whose translation into Spanish means  Personal Area Network,  is basically  a network made up of all the devices in the local and close environment of its user,  that is , it is made up of all the devices that they are close to it. The main characteristic of this type of network that allows the user to establish communication with their devices in a simple, practical and fast way. types of computer networking  advantages of computer networking

Currently there are several technologies that allow the creation of a personal area network, including Bluetooth and systems that use infrared transmission to communicate. types of computer networking

How to fix the most common network problems Types of Computer Networks

Thanks to the possibilities and flexibility that computer networks offer us,  the work we do daily with them was simplified and allowed us to do more or rest less, depending on the way we look at it. However, as with any other complex implementation, the more the benefits, the more problems we may have.

Let us remember that  several devices and many meters of cable interact with their respective connectors and accessories in a network, in addition to the software configurations to keep them working,  and it is always possible that some problem may arise, leaving any of its nodes without working in complete isolation from the other computers.

From this point on, we will know the best tips and guidelines to follow when we have problems with the network,  which will be very useful for any damage that is not greater and not having to depend on specialized technicians who will surely charge us a good amount for something that we can repair ourselves. advantages of computer networking

Wrong cable, poorly made or bad connector Types of Computer Networks

One of the main causes for a computer network to function incorrectly is its most basic part, that is, the physical connection. A cable in bad condition or simply poorly seated in its connector is the probable cause of 90% of the problems  that can be had in a network. advantages of computer networking importance of computer networking

Although this type of network connectors have been designed and manufactured to fit perfectly, sometimes it often happens that sudden movements disconnect them. They may also not work due to connector contact failure, which may be dirty or oxidized. advantages of computer networking importance of computer networking

If we suspect that something of this may have occurred, the best way to solve this problem is to disconnect the cable and check if the cable has any of the problems described, advantages of computer networking importance of computer networking

In the event that the network connectors are loose, adjust them, and if they are dirty or rusted, there is no alternative but to change the network connector for a new one or repair it , in the event that we have the necessary skills and instruments. advantages of computer networking importance of computer networking

Mains board burned or malfunctioning

There is no doubt that if we notice that one of the network cards of any of the computers has broken down, it is one of the most frustrating news we can receive, especially if our network has several computers. Fortunately, knowing if a network card or motherboard has burned out is relatively easy.

To do this, we check that everything is correctly installed and working, and then we carefully observe the network card to see if it works,  seeing if any of its LEDs turn on or blink. advantages of computer networking importance of computer networking

However, this is not necessarily good news, since it is possible that the lights turn on but that it does not transmit or receive data,  the main indicator that the network card is not working correctly is that it is not recognized by the operating system. importance of computer networking

So, if we have already verified that the network card is correctly wired, the network structure sends and receives data and its drivers are properly installed,  but we cannot communicate that PC with the others on the network, it  is more than Surely the plate has been damaged, so it is time to replace it with a new one.

Switch burned out due to electrical problems

No matter how careful we take with electronic components,  mounting voltage stabilizers or even uninterruptible power units (UPS),  electricity always manages to play a trick on us and leave some of our expensive equipment useless. importance of computer networks

In the case of switches, if we suspect that it may have been attacked by an electric shock, the first thing we have to check to see if it is still in good working order is to look at its physical panel, or in the event that it does not have For this convenience, access the device through a browser. importance of computer networks

Of course, if the network switch has been burned out or completely damaged, it won’t turn on any of its lights.  But in the event that the device does turn on its lights and behaves in an apparently normal way, but we still have problems accessing some of the PCs in our network through the device, there is a possibility that the switch is damaged. , although not entirely. Of course the solution to this problem is to buy a new switch , a quick but not painless solution. importance of computer networking importance of computer networks

In the event that everything works correctly, but we have certain problems such as a bad ignition or persistent unit resets,  we can also check the outlet to which the unit is plugged  to check if there is an electrical problem in it. importance of computer networking

The range of the wireless network is not adequate

As we know,  Wi-FI wireless networks are practical to install and very easy to use and configure, however they usually have range problems, and due to the type of environment in which they are used, they are subject to all kinds of interference. importance of computer networks

Wi-Fi networks, when mounted by radio waves, are very sensitive to all the elements that they encounter in their path such as walls, furniture and others,  their quality degrading as they cross obstacles.

If we verify that  the range of the wireless network is not adequate even though it is in the minimum effective transmission and reception area , it is most likely that we have problems with interference.

In this sense, the first thing we have to do to solve the problem is of course to clear the path of the signal . For this, we must make sure that between the wireless router and the computers and devices to be reached there are no thick walls, cordless telephones, microwave ovens,  or any other device that with its signals can limit the Wi-Fi range. importance of computer networking

Unfortunately, in the case of only walls, we can do nothing, except change the location of the wireless router. It is also possible to add signal repeaters, with which we will surely solve the problem.

Now, to fix problems caused by interference with other devices,  it would be best to place them as far away from the wireless network as possible. importance of computer networks

What is a network adapter?

In the event that our network card has suffered damage due to an electrical problem, we can always get to work without problems thanks to the so-called network adapters. Basically, a network adapter allows us to replace an internal network card in the event of any problem, and they can be designed to adapt to any network situation, that is, there are models for both wired Ethernet and wireless networks by WiFi.

In this sense, a network adapter designed to be used in a wired Ethernet network is basically a dongle that connects to a USB port that offers an Ethernet port, that is, an RJ45 connector.

Generally, this type of adapter includes a disk with its own drivers in the package, but most of the time its installation is not necessary, since the operating systems, as soon as we connect the adapter to the USB port, will take care of installing the necessary without the user having to participate in the process.

When the system has successfully installed the device, it is ready to be used. The only thing we have to do to connect to an Ethernet network or the Internet is to plug in the corresponding network cable.

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The other type of network adapter on the market is the one used in wireless networks. This type of network adapters are very useful for all those slightly older notebooks and mobile devices that do not have wireless connectivity, since this dongle will allow us to have the possibility of connecting to the Internet anywhere we are , without the need to be tied to a network cable. importance of computer networks

In this sense we must be careful, since the WiFi standards are changing, since if we buy a wireless network adapter that supports only old standards, we will most likely have many connection problems. To be sure that we are making a good purchase, it is best to make sure that the adapter in some part of its packaging or description ensures that it is compatible with the 802.11b / g / n standard. importance of computer networks

Basically, a wireless network adapter is a lot like a USB stick. As soon as we connect it to a USB port and the operating system detects and installs it, it will start working looking for all the WiFi signals that are in the vicinity. From this point on, the operating system will show us all available WiFi networks, after which we will be able to connect to them, as long as we have a username and password to do so. importance of computer networks

Network problems due to software

If everything we have previously tried has not been able to solve the problem we had with the network and we still cannot communicate the computers with each other,  with all the elements such as connectors, cables and others in good condition, as well as a correct network topography , the solution may be found via software.

In this sense, one of the problems that we could have is that  some of the computers that make up the network is configured for a different workgroup.
If we are on Windows, we can check this through the network icon on the taskbar, by clicking on  “Network and Sharing Center”. Once there we check if we are joined to the same working group. importance of computer networks

Computer networks

These days,  the word “networks” has become very common among those of us who use computers,  and although it can be related to different areas related to computing, such as social networks,  the truth is that when we talk about networks computing we mean a much broader platform. importance of computer networks

Thanks to the millions of computers scattered around the world today we can, among other things, enjoy the Internet, because the truth is that if computer networks had not been invented today we could not be browsing the great network of networks. importance of computer networks

The truth is that when we want to begin to know what  computer networks consist of,  we find that these networks are extremely complex, however we can have an idea about what they are and how they work through a series of basic concepts about computer networks,  since in short it is mainly about the link that exists between computers so that they can communicate with each other.

Here we tell you precisely  what a computer network is and how it works,  and we also bring you some information about the types of computer networks that exist today. Let’s take a look!

How computers communicate

The efficiency of a   data communication system depends fundamentally on:

1. Delivery: The system must deliver the data to the recipient.  The data should be received only by the target device or user.

2. Trust:  The system  must guarantee the delivery of the data . Modified or corrupted data in a transmission is of little use.

3. Delay time:  The system must deliver the data in a finite and predetermined time. Data delivered late is of little use . For example, in the case of multimedia transmissions, such as video, the delays are very annoying, therefore, the data must be delivered practically at the same moment in which it is generated, that is, without significant delay.

Components Types of Computer Networks

A basic data communication system  is made up of five elements 

1. Message:  It is the information to be transmitted. It can be made up of text, numbers, images, audio and video, or any combination of these.

2. Transmitter:  It is the device that sends the data message. It can be a computer, a workstation, a phone, a video camera, or any other device.

3. Receiver:  It is the device that receives the message.

4. Medium: It is the physical path through which a message originated and directed to the receiver travels. 

5. Protocol:  It is a set of rules that governs data communication. Represents an agreement between the communicating devices.

Direction of data flow

A  communication between two devices  can occur in three different ways: Simplex, Half-Duplex or Full-Duplex.

Simplex: In simplex mode,  communication is one-way, as in a one-way street. Only one of the two devices on the link is capable of transmitting; therefore, the other will only be able to receive. advantages of computer networking

Half-Duplex: In this mode,  each device can transmit and receive, but never at the same time. When one device is transmitting the other is receiving and vice versa. In a half-duplex transmission, the full capacity of the channel is given to the device that is transmitting at the moment.

Full-Duplex: In this mode,  both devices can transmit and receive simultaneously . Signals in opposite directions share the capacity of the link or channel.

Connection types

Point-to-point: Provides  a dedicated link  between devices.

Multi-point: It is one in which  more than two devices  share a single link.

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