domingo, 26 de septiembre de 2010

REDES - VISIO

Partial map of the Internet based on information obtained opte.org site in 2005. Each line between two nodes represents the connection between two IP addresses and its length is proportional to the delay between them.

Internet Access

Scheme with the current Internet-related technologies.

Internet includes about 5,000 networks around the world and over 100 different protocols based on TCP / IP, which is configured as network protocol. The services available in the global network of PCs, have advanced significantly, thanks to new technology high-speed transmission such as ADSL and Wireless, has managed to unite people with videoconferencing, view satellite images (see your house from the sky ), see the world through webcams, free phone calls, or enjoy a 3D multiplayer game, a good book, PDF, or albums and movies for download.

The Internet access method in effect for several years, basic telephony, has been gradually being replaced by faster and more stable connections, including ADSL, Cable Modems, or ISDN. They have also appeared forms of access through the grid, and even satellite (usually only for download, although there is the possibility of double track, using the DVB protocol-RS).

Internet is also available in many public places such as libraries, bars, restaurants, hotels, cafes and even shopping centers. A new way to access without a fixed wireless networks are, now present in airports, subways, universities or entire populations.

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