tailieunhanh - Lecture Management information systems: Solving business problems with information technology – Chapter 3

After studying this chapter you will be able to understand: What is the value of a single computer? Why are computer networks so important in today’s businesses? What components do you need to install to create a network? How can multiple users share a single network?,. | Introduction to MIS Chapter 3 Networks and Telecommunications Networks Teamwork Communication Scheduling Sharing Internet Suppliers Customers Banks Internal External Outline Introduction Sharing Data Sharing Hardware Sharing Software Components of a Network Computers Media Connection Devices Software Network Structure Shared Media Switched Standards The Internet How the Internet Works Internet 2 Mobile Commerce Global Telecommunications Technical Problems Political Complications Cultural Issues Comment Cases: Specialty Retail Appendix: Creating Web Pages Sharing Data: Transactions Database Management System and Web Server Internet Team Document File Server and Database Data and Tools Report and Comments Sharing Data: Decisions & Searches Decisions & searches Teamwork & joint authorship Sharing Data: E-mail Internet 1. User creates e-mail message. 2. Message transferred to account on server. 3. Transferred via the Internet to the destination account. 4. Message received when user checks e-mail. Sharing Data: Calendars 8:00 Mgt meeting 8:30 (open) 9:00 Staff meeting 9:30 Staff meeting 10:00 new meeting Hardware Sharing Printers Storage Processors Files are transferred from workstations to the server. Software automatically copies files to tapes. LAN administrator can restore files if needed. Corporate or external computer access Server Shared Printer Workstations tape drive (backup) Voice Computer Sent as packets: 1 2 3 4 5 Sent as packets: A B C D E Chicago New York Dallas Atlanta E 4 C B 2 A 1 5 D 3 Packet-Switched Networks Data, Voice, Video All converted to packets Packet has data, destination, and source address Switched services Packets routed as needed Reassembled at destination Network Components Computers Servers Work stations Media Cables Fiber optic Radio Infrared Connection devices LAN card LAN card LAN card LAN card Shared Printer Server Personal Computer Personal Computer Router or Switch Internet Firewall Server Scalability Sun 10000 Sun 3800 Sun Ultra | Introduction to MIS Chapter 3 Networks and Telecommunications Networks Teamwork Communication Scheduling Sharing Internet Suppliers Customers Banks Internal External Outline Introduction Sharing Data Sharing Hardware Sharing Software Components of a Network Computers Media Connection Devices Software Network Structure Shared Media Switched Standards The Internet How the Internet Works Internet 2 Mobile Commerce Global Telecommunications Technical Problems Political Complications Cultural Issues Comment Cases: Specialty Retail Appendix: Creating Web Pages Sharing Data: Transactions Database Management System and Web Server Internet Team Document File Server and Database Data and Tools Report and Comments Sharing Data: Decisions & Searches Decisions & searches Teamwork & joint authorship Sharing Data: E-mail Internet 1. User creates e-mail message. 2. Message transferred to account on server. 3. Transferred via the Internet to the destination account. 4. Message received when user .