Concept, Types, Topologies and What is Internet

We explain that it is a LAN network and the types of networks that exist.Also, what a router is and how it works.What is the Internet.

LAN networks are common and everyday use in businesses, businesses and homes.

What is a LAN?

It is known as LAN (acronym: Local Area Network , which translates Local Area Network) to a computer network whose scope is limited to a physical space reduced , such as a house, an apartment or at most a building.

Through a LAN network resources can be shared between several computers and computing devices (such as telephones cell phones, tablets, etc.), such as peripherals (printers, projectors, etc.), information stored on the server (or on connected computers) and even Internet access points, despite being in rooms or even floors different.

These types of networks are for common and everyday use in businesses, businesses and homes , and may present a different network topology according to the specific needs of the network, such as:

• Bus network, in which the same cable (or backbone ) connects to computers and allows the transmission of data in a straight line, making it simple but susceptible to cable damage or traffic interruption.


• Star network, in which all computers connect to a central server that manages network resources and allocates them as requested.


• Ring network, in which all computers are connected to their neighbors through a unidirectional transmission, which interrupts the network from a fault at some level of it.


• Mixed network, combine two or more models from the previous ones.

More in: Red.

Types of networks

WAN networks can be national or international, such as the Internet itself.

Computer networks are generally classified based on their physical or geographical reach, which generally reflects their power or volume of data.In that sense, we can talk about:

• LAN networks ( Local Area Network ).Local area networks covering specific and specific sites of little scope, such as a house, an office, at most some floors within a building, they are usual in business, schools, businesses, etc.


• Networks MAN ( Metropolitan Area Network ).Metropolitan area networks, that is to say, of a range beyond the local but not international.A perfect example of these are the networks of university campuses, or bureaucratic management between various State agencies, each with its headquarters in various parts of the city.


• WAN Networks ( Wide Area Network ).Wide area networks that cross vast regions of the geography, being able to be national or international, like the Internet itself.

What is a router?

A device that allows interconnection of subnets is called router or router, managing how data packets are routed from one to another.This means that the router, as its name implies, gets the packets sent a suitable path, analyzing its origin and destination information.This function is carried out through two simultaneous processes:

• Forwarding packets.The router receives packets and sends them back to the appropriate exit point as determined by the routing table, an electronic document that contains the routes to the different nodes of the network.


• Packet routing.Using routing algorithms, determines the route that packets must follow as they flow from a sender to a receiver.

Internet

The best-known Internet service is the World Wide Web.

A Wan network is called Internet composed of a specialized set of interconnected computer networks through the TCP/IP family of protocols , thus achieving a global and massive reach.

This network dates from the mid-twentieth century, when ARPANET was established, a forerunner that spanned only three US universities in the state of California, but has since grown steeply until it became the network of networks, the most important known.

Among its services, the best known (so much so that they are confused as one thing) is the World Wide Web (WWW): a set of protocols that allow remote consultation of hypertexts and share tons of information that way remote.This service was created in 1990, and is not the only one that the Internet is capable of supporting today.

See more: Internet.