COMMUNICATION SYSTEM :When you write a letter or watch TV you are communicating with other people.The elements of the communication are:the interlocutor,the menssages,the means and the code.
ELEMENTS OF NETWORK:A network usually consists on the following elements.:its means,the users and the protocols
COMPUTER NETWORKS:A network is two or more computers connected to one another that can share documents,files,printers,etc.
INTERCONNECTED NETWORKS:An interconneted network or a network of networks is two or more network connected together to from a system.
THE INTERNET:The internet is a huge network of networks,inconnected worldwide.Each server is identified by a domain name.
INTERNET DOMAINS:The letters after "www" in web adresses represent a domain name.
INTERNET SERVICES:These are enriched text documents with many format options.They are divided into frames and can include images and other multimedia elements,e.g. sound or video files.There are four types:
Blog and web pages
Electronic mail and e-mail
virtual communities and social networks
Other internet servicies
INTERNET CONNECTIONS:To access the internet you need a computer connected to a server that has a connection to all other web servers.
