1. © 2006 Pearson Education Canada Inc.4-1 Chapter 4 Telecommunications and the Internet PowerPoint Presentation Jack Van Deventer Ward M. Eagen

2. © 2006 Pearson Education Canada Inc.4-2 Chapter 4 Objectives Understand the role of telecommunications in organizations Understand the role of telecommunications in organizations Understand basic Internet services Understand basic Internet services Web Applications Web Applications

3. © 2006 Pearson Education Canada Inc.4-3 Opening Case: Canada Faces Global Security Threats Tens of thousands of Canadians have been targeted by fraud artists with e-mail scams Tens of thousands of Canadians have been targeted by fraud artists with e-mail scams Many viruses, worms, and Trojans originate outside Canadian jurisdiction in developing countries that do not have the legislation or the resources to deal with these threats Many viruses, worms, and Trojans originate outside Canadian jurisdiction in developing countries that do not have the legislation or the resources to deal with these threats It is predicted that we will see an increase in politically motivated digital attacks It is predicted that we will see an increase in politically motivated digital attacks

4. © 2006 Pearson Education Canada Inc.4-4 The Role of Telecommunications and Networks in Organizations Common Business Applications Common Business Applications  E-Commerce  Electronic Data Interchange (EDI)  Telecommuting  Electronic Fund Transfer (EFT)  Distance Learning  Telemedicine

5. © 2006 Pearson Education Canada Inc.4-5 Brief Case #3: Earl’s Restaurant Earl’s Restaurants, with more than 50 locations in British Columbia, Alberta, and Saskatchewan, is providing wireless service for its customers and staff Earl’s Restaurants, with more than 50 locations in British Columbia, Alberta, and Saskatchewan, is providing wireless service for its customers and staff Earl’s needed to provide Internet access for its mobile district managers without putting strain on its IT department or restaurant infrastructure, and wireless in the restaurant makes good sense Earl’s needed to provide Internet access for its mobile district managers without putting strain on its IT department or restaurant infrastructure, and wireless in the restaurant makes good sense Opening Wi-Fi to Earl’s customers seems to make sense from a marketing perspective, attracting other managers and customers who are on the road Opening Wi-Fi to Earl’s customers seems to make sense from a marketing perspective, attracting other managers and customers who are on the road

6. © 2006 Pearson Education Canada Inc.4-6 The Internet Web Domain Names and Addresses Web Domain Names and Addresses  Uniform Resource Locator (URL)  Common domain extensions .edu.org.mil.com.net .ca.th.no (country codes)  IP Addresses

7. © 2006 Pearson Education Canada Inc.4-7 The Internet Who Manages the Internet? Who Manages the Internet?  The Internet Registry – acts as a central repository for Internet-related information and provides central allocation of network system identifiers  Domain Name System (DNS) – a system used to associate Internet host names with their Internet IP addresses

8. © 2006 Pearson Education Canada Inc.4-8 The Internet Who Manages the Internet? Who Manages the Internet?  Internet Corporation for Assigned Names and Numbers (ICANN) – a non- profit corporation manages IP addresses, domain names, and root server system management  InterNIC Registration Service – assigns Internet addresses

9. © 2006 Pearson Education Canada Inc.4-9 The Internet How Do You Connect to the Internet? How Do You Connect to the Internet?  Internet Service Providers (ISPs)  Network Access Points (NAPs)  Internet backbone

10. © 2006 Pearson Education Canada Inc.4-10 The Internet Security in the Internet Age Security in the Internet Age  Encryption  Firewalls  Authentication

11. © 2006 Pearson Education Canada Inc.4-11 The Internet Internet Tools Internet Tools  E-mail  Telnet  File transfer  Listserv  Usenet  Archie  WAIS  Gopher  Voice over IP

12. © 2006 Pearson Education Canada Inc.4-12 World Wide Web World Wide Web Applications World Wide Web Applications  Electronic brochure  Online ordering  Electronic marketplaces  Online customer service

13. © 2006 Pearson Education Canada Inc.4-13 New Net Applications Voice over IP (VoIP) Voice over IP (VoIP)  Skype Weblogs (Blogs) Weblogs (Blogs)  Text  Photos  Audio (Podcasts)  Video