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Technology Guide 4 Telecommunication & Internet Agenda Telecommunication terminology Communication media Network architecture concepts Enterprise networking Internet Telecommunication Terminology Telecommunication Data communication Components Hardware Media Software Protocols
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Technology Guide 4 Telecommunication & Internet
Agenda • Telecommunication terminology • Communication media • Network architecture concepts • Enterprise networking • Internet
Telecommunication Terminology • Telecommunication • Data communication • Components • Hardware • Media • Software • Protocols • Providers
Telecommunication Terminology • Signals • Analog: amplitude & frequency • Digital • Modem • Multiplexer • Frequency division, time division, statistical time division, wavelength division • Front-end process • Concentrator
Agenda • Telecommunication terminology • Communication media • Network architecture concepts • Enterprise networking • Internet
Communication Media • Cable media • Wireless media
Cable media • Types • Twisted-pair wire • Coaxial cable • Fiber optics • Pros & Cons
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
Wireless media • Applications • Cellular radio technology • Mobile computing • Personal communication system • Personal digital assistance
Agenda • Telecommunication definition • Communication media • Network architecture concepts • Enterprise networking • Internet
Network Architecture Concepts • Transmission characteristics • Protocols • Open system interconnection (OSI) • Interface • Topology • Types
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
Protocols • Definition • Rules & procedures for transmission • Protocol types • Token passing • Carrier sense multiple access/collision detection • Transmission control protocol/internet protocol (TCP/IP)
Open system interconnection (OSI) • Physical layer • Data link layer • Network layer • Transport layer • Session layer • Presentation layer • Application layer
Interface • Transmission interfaces • Parallel data transfer • Serial data transfer • Universal asynchronous receiver/transmitter • Network interfaces • Interface card • Routers • Bridges • Gateways
Topology • Ring • Bus • Star • Web • Hybrid
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
Agenda • Telecommunication terminology • Communication media • Network architecture concepts • Enterprise networking • Internet
Enterprise Networking - Types • Client/server • Distributed presentation • Remote presentation • Distributed logic • Remote data management • Distributed data management • Peer-to-peer • Intranet • Extranet • Internet
Enterprise NetworkingOpen Systems Goals • Connectivity • Portability • Interoperability • Scalability • Others?
Agenda • Telecommunication terminology • Communication media • Network architecture concepts • Enterprise networking • Internet
Internet • Internet kiosks • Protocols: TCP/IP • Telnet • Internet Service provider (ISP) • World wide web (Web) • Browser • Web site/web page
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
Points to Remember • Telecommunication terminology Communication media • Network architecture concepts • Enterprise networking • Internet
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?
Assignment • Review technology guides 1-2 & 4 and chapters 1-5 • Read chapter 6 • Group assignment • Research paper