UNIT 5. Introduction to Computer Networks Feng Lin Sichuan Univ
Feng Lin Sichuan Univ
Outline Unit 5.1 Basic of Internet Unit 5.2 More on Computer Networks Unit 5.3 Network Architecture
Unit 5.1 Basic of Internet Unit 5.2 More on Computer Networks Unit 5.3 Network Architecture
Unit 5.1 Basic of internet
Agenda First sight of communication Everything is Connected to Everything Applications of Internet Web Email Classification of Computer Networks Transmission media S LAN MAN WAN Client/Sever vs peer to Peer
First Sight of Communication Everything is Connected to Everything Applications of Internet Web Email Classification of Computer Networks Transmission Media LAN,MAN,WAN Client/Sever vs Peer to Peer
First sight of communication The human need to communicate has motivated mankinds creativit Cave dwellers drew pictures on walls Smoke signals, drum rhythms passed messages Postal service: a system for physically transporting documents and other small packages Alexander Graham Bell: invented the telephone Data communication Data communications are the exchange of data between two devices via some form of transmission medium
• The human need to communicate has motivated mankind’s creativity: – Cave dwellers drew pictures on walls. – Smoke signals, drum rhythms passed messages. – Postal service: a system for physically transporting documents and other small packages – Alexander Graham Bell: invented the telephone. Data Communication: Data communications are the exchange of data between two devices via some form of transmission medium