A computer network is a system of a series of computers interconnected using a medium (physical or wireless) to use resources in a shared way and exchange files or any information.
Every computer network has equipment that performs certain functions. In this sense, there must always be a sender, a receiver, a medium and a message. Under this principle, computers and other electronic devices can be connect locally (LAN connection) or massively (Internet), so computer networks are essential for continuous processes.
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The data exchange process within a computer network requires the participation of certain components or elements that play a specific role. Here are what they are:
These are computers responsible for processing the entire flow of information transmitted through a network. Servers also function as the control center of a computer network since, from these devices, it is possible to regulate or control the file traffic that the web allows.
These are the different computers connected to the computer network that users use to use it. These computers only have access to it but do not have control functions as in the case of servers.
These are the resources use to carry out the transmission of information. It can be a wired or wireless network, depending on the case, but in general, its function is none other than to connect the nodes (clients and servers) and serve as a data exchange channel.
It is the term use to refer to the different physical components that make up a computer network. From the modems and network cards to the antennas and telecommunication elements that make the effective operation of the network possible.
Understands the protocols and logical instructions that network hardware uses to function correctly. This item considers the Network Operating System (NOS) and also the standard communication protocol (TCP/IP).
There are multiple ways to classify computer networks; however, one of the most common ways is to refer to the types of existing networks based on their scope or size.
PAN ( Personal Area Network ) refers to small networks for personal use that generally connects devices used within a home. That is personal computers and mobile phones.
A LAN connection ( Local Area Network ) is a small network limited to interconnecting computers within a specific area. Offices, classrooms, cyber cafes, etc. LAN connections are characterize by not having communication with public networks.
The MAN network ( Metropolitan Area Network ) connects larger spaces than a LAN connection. This case applies to areas such as squares, university areas, companies, and others.
The type of network GAN ( Global Area Network ) is a network with global coverage; it allows the transmission of information remotely through satellites and also telecommunications stations. Therefore the GPS network is one of the examples of par excellence.
A SAN network ( Storage Area Network ) is, as its name indicates, a network-oriented to data storage. Specifically, these are networks made up of servers, hard drives, physical storage devices, and low-level hardware.
The WAN ( Wide Area Network ) refers to large-scale computer networks and an entire infrastructure system designed to connect the clients and also servers that comprise it. In this group, we can consider the presence of the Internet or satellites.
Depending on the form of connection that integrates the devices of a network, there are different media with unique characteristics. The following are the types of physical relationships use by computer networks:
These are wired connections that use physical wiring to connect the devices that make up a network. In this sense, the main ones are:
Thanks to the appearance of computer networks on all scales, many aspects of human life have been favor. However, just as there are great benefits arising from these systems, there are also risks or disadvantages that must be consider.
A computer network is the usual of computers allotment resources situated on or provide by network nodes. Therefore the computers use standard communication protocols over digital interconnections to communicate with each other.
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