Session 7-12. Modern IT Architecture - 复旦大学精品课程.ppt

Session 10-11 Telecommunication and Networks ;Agenda;管理学院 李达三楼 网络结构;纺织企业网络系统 ;Network is Computer.Network is System.;TELECOMMUNICATIONS;Telecommunication Concept;The Spectrum of Telecommunications-based Service Available ;Electronic Signals;Telecommunication System;PROTOCOL（协议）;Components of Telecommunication Systems : Computers;Components of Telecommunication Systems : Terminals;Communication Processors;Communication Network;Communication Media (channel);Wireless Media: (1) Microwave; (2) Satellite; (3) Global Positioning Systems; (4) Radio; (5) Infrared; (6) Cellular Radio Technology; (7) Mobile Computing. * ;Made of thousands of super clear glass strands Fast, light, durable trillions of bits per second, full duplex, 以光脉冲形式在电缆中传输 EXPENSIVE, HARDER TO INSTALL OFTEN USED AS BACKBONE OF NETWORKS *; FIBER OPTICS;Wireless Transmission (Megahertz兆赫) ;Frequency Ranges for Communications Media and Devices;UPLINK;Wireless Transmission Technology;Communication Media (channel); MEDIUM;Advantages and disadvantages of media;Individual Assign for Session 9-10 ;Session 10-11 Telecommunication and Networks(2) ;Agenda;Computer Network; Computer Network Architecture;Protocols网络协议; ISO/OSI (开放系统互连 )分层参考模型;TCP/IP（Transmission Control Protocol/Internet Protocol）;TCP/IP: Four-Layer Reference Model;TCP/IP;How Does Internet work?;How Does Internet work?;A Document is traveling on Internet;TCP/IP（Transmission Control Protocol /Internet Protocol）;Computer Network：Standards;Current Transmission Standards;Computer Network：Interface; HOST;BUS总线结构;;LOCAL AREA NETWORK (LAN局域网): Dedicated Channels; Limited Distance (from hundreds meters to 10 kilometers radius); Can Share Expensive Hardware Software Metropolitan Area Network（MAN城域网或地区网）：Limited Distances (from 10 kilometers to 100 kilometers); Transmission speed higher than LAN. *;LAN;Computer Network Types;Network Comparison;Network Application;Network Application (con’t);Computer Network: Connection;Switch, switch Hub:　交换机，又称交换式集