1. Telecommunications, the Internet, and Wireless Technology
Chapter 6
Telecommunications, the Internet, and Wireless Technology

2. Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
STUDENT OBJECTIVES
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. Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
STUDENT OBJECTIVES (Continued)
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.

4. Illustrates digital technology’s role in creating new opportunities.
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
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Replacing the outdated separate networks reduced costs and increased the services available.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.

5. Interactive Session: Dartmouth College
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
Dartmouth: An Old College Becomes a New Networking Innovator
Interactive Session: Dartmouth College
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?

6. Networking and Communication Trends
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
Telecommunications and Networking in Today’s Business World
Networking and Communication Trends
Telephone networks vs. computer networks
Single, digital networks and Internet-based standards
Telecommunications providers
Broadband

7. What Is a Computer Network?
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
Telecommunications and Networking in Today’s Business World
What Is a Computer Network?
Two or more connected computers
Network interface card (NIC)
Network operating system (NOS)
Hubs, switches, and routers
Corporate-wide networks

8. Components of a Simple Computer Network
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
Telecommunications and Networking in Today’s Business World
Components of a Simple Computer Network
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.
Figure 6-1

9. Key Digital Networking Technologies
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
Telecommunications and Networking in Today’s Business World
Key Digital Networking Technologies
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. Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
Telecommunications and Networking in Today’s Business World
The Transmission Control Protocol/Internet Protocol (TCP/IP) Reference Model
This figure illustrates the four layers of the TCP/IP reference model for communications.
Figure 6-4

11. Physical Transmission Media
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
Communications Networks
Physical Transmission Media
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)

12. Local-area networks (LANs)
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
Communications 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)

13. Broadband Network Services and Technologies
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
Communications Networks
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

14. Internet Addressing and Architecture
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Internet
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

15. The Domain Name System Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Internet
The Domain Name System
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.
Figure 6-8

16. Chatting and instant messaging File Transfer Protocol (FTP)
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Internet
Internet Services
Usenet newsgroups
LISTSERVs
Chatting and instant messaging
File Transfer Protocol (FTP)
World Wide Web

17. Interactive Session: Internet Services
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Internet
Interactive Session: Internet Services
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. Client/Server Computing on the Internet
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Internet
Client/Server Computing on the Internet
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.
Figure 6-10

19. Searching for information on the Web
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Internet
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. Intranets and Extranets
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Internet
Intranets and Extranets
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. Technologies and Tools for Communication and E-Business
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Internet
Technologies and Tools for Communication and E-Business
, chat, instant messaging, and electronic discussions
Groupware and electronic conferencing
Internet telephony
Virtual private networks

22. Monitoring Employees on Networks: Unethical or Good Business?
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Internet
Monitoring Employees on Networks: Unethical or Good Business?
Read the Focus on People and then discuss the following questions:
What problems arise from giving employees access to and the Internet during working hours?
Should managers monitor employee and Internet usage?
Why or why not?
Describe an effective and Web use policy for a company.

23. Wireless devices (PDAs, BlackBerry, smart phones) Cellular systems
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Wireless Revolution
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)

24. RFID and wireless sensor networks
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Wireless Revolution
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

25. How RFID Works Essentials of Business Information Systems Figure 6-18
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Wireless Revolution
How RFID Works
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.
Figure 6-18

26. TransAlta: New Power from Wireless Technology
Essentials of Business Information Systems
Chapter 6 Telecommunications, the Internet, and Wireless Technology
The Wireless Revolution
TransAlta: New Power from Wireless Technology
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.