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laudon_ess7_ch06 (1).pdf

  1. 6.1 © 2007 by Prentice Hall 6 Chapter Telecommunications, the Internet, and Wireless Technology Telecommunications, the Telecommunications, the Internet, and Wireless Internet, and Wireless Technology Technology
  2. 6.2 © 2007 by Prentice Hall STUDENT OBJECTIVES Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology • Describe the features of telecommunications networks and identify key networking technologies. • Evaluate alternative transmission media, types of networks, and network services. • Demonstrate how the Internet and Internet technology work and how they support communication and e-business.
  3. 6.3 © 2007 by Prentice Hall • Identify and describe the principal technologies and standards for wireless networking, communication, and Internet access. • Assess the business value of wireless technology and important wireless applications in business. STUDENT OBJECTIVES (Continued) Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology
  4. 6.4 © 2007 by Prentice Hall Dartmouth: An Old College Becomes a New Networking Innovator • Problem: High networking costs, maintaining a high- quality learning environment while embracing new technology and the opportunities it provides. • Solutions: Deploy IP and Wi-Fi networks to combine voice, data, and video on a single backbone, establishing campus-wide mobile access and high- speed data and voice services. • Replacing the outdated separate networks reduced costs and increased the services available. • Demonstrates IT’s role in delivering information services that enhance a learning environment. • Illustrates digital technology’s role in creating new opportunities. Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology
  5. 6.5 © 2007 by Prentice Hall • Think about the networking infrastructure of your campus • If your campus has a wireless network, what benefits does the network provide to the students, faculty, and staff? • If your campus does not have wireless access, what benefits do you imagine such a network would provide? • What problems do you think might come along with deploying a wireless network on a college campus? Interactive Session: Dartmouth College Interactive Session: Dartmouth College Dartmouth: An Old College Becomes a New Networking Innovator Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology
  6. 6.6 © 2007 by Prentice Hall Telecommunications and Networking in Today’s Business World • Telephone networks vs. computer networks • Single, digital networks and Internet-based standards • Telecommunications providers • Broadband Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology Networking and Communication Trends Networking and Communication Trends
  7. 6.7 © 2007 by Prentice Hall What Is a Computer Network? What Is a Computer Network? Telecommunications and Networking in Today’s Business World Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology • Two or more connected computers • Network interface card (NIC) • Network operating system (NOS) • Hubs, switches, and routers • Corporate-wide networks
  8. 6.8 © 2007 by Prentice Hall Components of a Simple Computer Network Components of a Simple Computer Network Telecommunications and Networking in Today’s Business World Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology Figure 6-1 Illustrated here is a very simple computer network, consisting of computers, a network operating system residing on a dedicated server computer, cabling (wiring) connecting the devices, network interface cards (NIC), switches, and a router.
  9. 6.9 © 2007 by Prentice Hall Key Digital Networking Technologies Key Digital Networking Technologies Telecommunications and Networking in Today’s Business World Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology • Client/server computing • Packet switching • TCP/IP and connectivity • Protocols govern transmission of information between two points • Worldwide standard is TCP/IP • Four-layered Department of Defense reference model for TCP/IP includes application layer, transport layer, Internet layer, and network interface layer
  10. 6.10 © 2007 by Prentice Hall The Transmission Control Protocol/Internet The Transmission Control Protocol/Internet Protocol (TCP/IP) Reference Model Protocol (TCP/IP) Reference Model Telecommunications and Networking in Today’s Business World Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology Figure 6-4 This figure illustrates the four layers of the TCP/IP reference model for communications.
  11. 6.11 © 2007 by Prentice Hall • Twisted wire (modems) • Coaxial cable • Fiber optics and optical networks • Dense wavelength division multiplexing (DWDM) • Wireless transmission media and devices • Microwave • Satellites • Cellular telephones • Transmission speed (hertz, bandwidth) Physical Transmission Media Physical Transmission Media Communications Networks Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology
  12. 6.12 © 2007 by Prentice Hall Types of Networks Types of Networks • Local-area networks (LANs) • Campus-area networks (CANs) • Peer-to-peer • Topologies: star, bus, ring • Metropolitan and wide-area networks • Wide-area networks (WANs) • Metropolitan-area networks (MANs) Communications Networks Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology
  13. 6.13 © 2007 by Prentice Hall Broadband Network Services and Technologies Broadband Network Services and Technologies • Frame relay • Asynchronous Transfer Mode (ATM) • Integrated Services Digital Network (ISDN) • Digital subscriber line (DSL) • Cable Internet connections • T lines Communications Networks Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology
  14. 6.14 © 2007 by Prentice Hall • What is the Internet? • Internet Addressing and Architecture • The Domain Name System • Hierarchical structure • Top-level domains • Internet Architecture and Governance • No formal management: IAB, ICANN, W3C • The Future Internet: IPv6 and Internet2 Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology The Internet
  15. 6.15 © 2007 by Prentice Hall The Domain Name System The Domain Name System Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology Figure 6-8 The Domain Name System is a hierarchical system with a root domain, top-level domains, second-level domains, and host computers at the third level. The Internet
  16. 6.16 © 2007 by Prentice Hall Internet Services Internet Services Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology The Internet • E-mail • Usenet newsgroups • LISTSERVs • Chatting and instant messaging • File Transfer Protocol (FTP) • World Wide Web
  17. 6.17 © 2007 by Prentice Hall Interactive Session: Internet Services Interactive Session: Internet Services Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology The Internet • Name specific examples of each of the Internet services that were mentioned previously • Discuss ways in which each of these services may be used to the benefit of a business • Located Web pages that illustrate each of these services in the context of business use
  18. 6.18 © 2007 by Prentice Hall Client/Server Computing on the Internet Client/Server Computing on the Internet Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology Figure 6-10 Client computers running Web browser and other software can access an array of services on servers over the Internet. These services may all run on a single server or on multiple specialized servers. The Internet
  19. 6.19 © 2007 by Prentice Hall Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology The Internet The World Wide Web The World Wide Web • Hypertext • Hypertext Transfer Protocol (HTTP) • Uniform resource locators (URLs) • Web servers • Searching for information on the Web • Search engines • Intelligent agent shopping bots • RSS
  20. 6.20 © 2007 by Prentice Hall Intranets and Extranets Intranets and Extranets Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology The Internet • Intranets • Use existing network infrastructure with Internet connectivity standards software developed for the Web • Create networked applications that can run on many types of computers • Protected by firewalls • Extranets • Allow authorized vendors and customers access to an internal intranet • Used for collaboration • Also subject to firewall protection
  21. 6.21 © 2007 by Prentice Hall Technologies and Tools for Communication and E Technologies and Tools for Communication and E- -Business Business Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology The Internet • E-mail, chat, instant messaging, and electronic discussions • Groupware and electronic conferencing • Internet telephony • Virtual private networks
  22. 6.22 © 2007 by Prentice Hall • Read the Focus on People and then discuss the following questions: • What problems arise from giving employees access to e-mail and the Internet during working hours? • Should managers monitor employee e-mail and Internet usage? • Why or why not? • Describe an effective e-mail and Web use policy for a company. Monitoring Employees on Networks: Unethical or Monitoring Employees on Networks: Unethical or Good Business? Good Business? Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology The Internet
  23. 6.23 © 2007 by Prentice Hall • Wireless devices (PDAs, BlackBerry, smart phones) • Cellular systems • Cellular network standards and generations (GSM, CDMA) • Cellular generations (SMS, 3G, 2.5G) • Mobile wireless standards for Web access (WAP, I-mode) • Wireless computer networks and Internet access • Bluetooth (PANs) • Wi-Fi (access points) • Wi-Fi and wireless Internet access (hotspots) • WiMax • Broadband cellular wireless (EV-DO) Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology The Wireless Revolution
  24. 6.24 © 2007 by Prentice Hall • RFID and wireless sensor networks • Radio frequency identification (RFID) • Powerful technology for tracking goods in a supply chain using radio signals • Reduction in cost of RFID tags now making the technology viable for many firms • Wireless sensor networks • Can be used to monitor building security, detect hazardous substances in the air, or monitor environmental changes, traffic, or military activity • Require low-power, long-lasting batteries and ability to endure in the field without maintenance Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology The Wireless Revolution
  25. 6.25 © 2007 by Prentice Hall How RFID Works How RFID Works Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology Figure 6-18 RFID uses low-powered radio transmitters to read data stored in a tag at distances ranging from 1 inch to 100 feet. The reader captures the data from the tag and sends them over a network to a host computer for processing. The Wireless Revolution
  26. 6.26 © 2007 by Prentice Hall • Read the Focus on Technology and then discuss the following questions: • What problems and challenges did TransAlta face? • How did these problems affect its business? • How did wireless technology help the company solve these problems? • What other solutions might the company have tried? • Did TransAlta choose the best solution? Explain your answer. TransAlta TransAlta: New Power from Wireless Technology : New Power from Wireless Technology Essentials of Business Information Systems Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter 6 Telecommunications, the Internet, and Wireless Technology Wireless Technology The Wireless Revolution
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