1. Technology Guide 4 Telecommunication & Internet

2. Agenda Telecommunication terminology Communication media Network architecture concepts Enterprise networking Internet

3. Telecommunication Terminology Telecommunication Data communication Components –Hardware –Media –Software –Protocols –Providers

4. Telecommunication Terminology Signals –Analog: amplitude & frequency –Digital Modem Multiplexer –Frequency division, time division, statistical time division, wavelength division Front-end process Concentrator

5. Agenda Telecommunication terminology Communication media Network architecture concepts Enterprise networking Internet

6. Communication Media Cable media Wireless media

7. Cable media Types –Twisted-pair wire –Coaxial cable –Fiber optics Pros & Cons

8. Wireless media Types –Microwave –Satellite Geostationary earth orbit (22,300) Medium earth orbit (6,000) Low earth orbit (400 – 1,000) –Radio –Infrared Pros & cons

9. Wireless media Applications –Cellular radio technology –Mobile computing –Personal communication system –Personal digital assistance

10. Agenda Telecommunication definition Communication media Network architecture concepts Enterprise networking Internet

11. Network Architecture Concepts Transmission characteristics Protocols Open system interconnection (OSI) Interface Topology Types

12. Transmission characteristics Speed –Bits per second (bps) –Baud rate (Hertz) Direction –Simplex –Half-duplex –Full-duplex Mode –Asynchronous –Synchronous Accuracy –Horizontal –Vertical –Cyclic redundancy checking

13. Protocols Definition –Rules & procedures for transmission Protocol types –Token passing –Carrier sense multiple access/collision detection –Transmission control protocol/internet protocol (TCP/IP)

14. Open system interconnection (OSI) Physical layer Data link layer Network layer Transport layer Session layer Presentation layer Application layer

15. Interface Transmission interfaces –Parallel data transfer –Serial data transfer –Universal asynchronous receiver/transmitter Network interfaces –Interface card –Routers –Bridges –Gateways

16. Topology Ring Bus Star Web Hybrid

17. Types LAN –Private branch exchange (PBX) –Centrex MAN WAN VAN –Packet switching –Frame relay –Asynchronous transfer mode (ATM) –Integrated services digital network (ISDN) –Digital subscriber line (DSL) –Fiber distributed data interface Virtual private network (VPN) Backbone

18. Agenda Telecommunication terminology Communication media Network architecture concepts Enterprise networking Internet

19. Enterprise Networking - Types Client/server –Distributed presentation –Remote presentation –Distributed logic –Remote data management –Distributed data management Peer-to-peer Intranet Extranet Internet

20. Enterprise Networking Open Systems Goals Connectivity Portability Interoperability Scalability Others?

21. Agenda Telecommunication terminology Communication media Network architecture concepts Enterprise networking Internet

22. Internet kiosks Protocols: TCP/IP Telnet Internet Service provider (ISP) World wide web (Web) Browser Web site/web page

23. Internet Search engines or metasearch engines Uniform resource locator (URL) Hypertext transfer protocol (http) Usages –Research –E-mail –Chat program –Newsgroup –Electronic bulletin boards (EBBs) –E-commerce

24. Points to Remember Telecommunication terminology Communication media Network architecture concepts Enterprise networking Internet

25. Discussion Questions Why does an organization need a reliable network? What are the general selection criteria for a network? What kind networks are useful to an university such as CSUS? What kind networks are needed by a company such as Intel?

26. Assignment Review technology guides 1-2 & 4 and chapters 1-5 Read chapter 6 Group assignment Research paper