Networks terminology

Hi bloggers!! During this week, we have learn a lot about networks, how do they work, their advantages and disadvantages, the external materials we need to build them... and now, we must do a post about the terminology used in this area, all the abbrevations and acronyms so there you have a small summary:

PAN: personal area networks, it comunicates devices that are close bewteen them.

LAN: local area networks, a small area, like a higschool ot a endeavour.

MAN: Metropolitan area networks, a city

WAN: wide area metworks, they conect cities and countrys in diferent continents.

IP: an IP address is a numerical label that identifies an interface.

MAC: it identifies a device in a network.

ROUTER: they are the devices that conect several computer networks.

HUB: they are devices thar recives informatión and they they pass it to another computers, usually more than one.

SWICH: they are similar to HUBs, but in this case they just send the information to the computers witch the sender computer want to.

VPN: virtual private network, they cifrate personal data, like credit cards codes, adresses, pastwords etc...

OSI: open systems interconnect, it´s the protocol were the internet is bassed on.