internet

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• Replacing the outdated separate networks reduced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