telecommunications and networking 6. 1. compare and contrast the two major types of networks. 2....
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Telecommunications and Networking
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1. Compare and contrast the two major types of networks.
2. Describe the wireline communications media and transmission technologies.
3. Describe the most common methods for accessing the Internet.
4. Explain the impact that networks have had on business and everyday life for each of the six major categories of network applications.
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1.What Is a Computer Network?
2.Network Fundamentals
3.The Internet and the World Wide Web
4.Network Applications
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[ [ Opening Case Opening Case The Neutrality Ware The Neutrality Ware ]]
• The Problem
• A Possible Solution
• The Results
• What We Learned from This Case
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[about business][about business]
Studio G6.1
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What Is a Computer Network?
6.1
• Local Area Networks• Wide Area Networks• Enterprise Networks
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Network Fundamentals6.2
• Analog and Digital Signals• Communications Media and
Channels• Network Protocols• Types of Network Processing
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Analog and Digital Signals• Analog Signals
– Two Parameters• Amplitude and frequency
• Digital Signals• Modem or Modulator-demodulator
– Dial-up modem– Cable modems– DSL
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Communications Media and Channels
• Twisted-pair Wire• Coaxial Cable• Fiber Optics
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Network Protocols
• Ethernet• Transmission Control
Protocol/Internet Protocol (TCP/IP)– Four Layers
– Packet Switching
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Types of Network Processing• Client/server computing• Peer-to-peer Processing (P2P)
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The Internet and the World Wide Web
6.3
• Accessing the Internet• The Future of the Internet• The World Wide Web
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Accessing the Internet
• Connecting via an Online Service• Connecting via Other Means• Addresses on the Internet
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The Future of the Internet
• Three Factors Could Cause Internet Brownout– Increasing number of people who work online– Soaring popularity of Web sites such as YouTube
requiring large amounts of bandwidth– Tremendous demand for high-definition television
delivered over the Internet
• Internet2
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World Wide Web (WWW)
• A system of universally accepted standards for storing, retrieving, formatting, and displaying information via a client/server architecture– Web site– Webmaster– Uniform Resource Locator (URL)– Browsers
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Network Applications6.4
• Discovery• Communication• Collaboration• E-Learning and Distance
Learning• Virtual Universities• Telecommuting
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Discovery
• Search Engines and Metasearch Engines
• Publication of Material in Foreign Languages
• Portals
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Portals
• Commercial Portal• Affinity Portal• Corporate Portal• Industrywide Portal
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[about business][about business]
A New Search Engine
6.2
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[about business][about business]
Marriot’s Corporate Portal
6.3
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Communication
• Electronic Mail (E-mail)• Web-Based Call Centers• Electronic Chat Rooms• Voice Communication
– Internet Telephony (VoIP)
• Unified Communications (UC)
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Collaboration
• Work group• Workflow• Virtual Team• Virtual Collaboration• Crowdsourcing• Synchronous versus asynchronous
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Collaboration
• Microsoft SharePoint• Google Docs• IBM Lotus Quickr• Jive• Electronic Teleconferencing
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E-Learning and Distance Learning
• E-Learning– Learning supported by the Web
• Distance Learning– Any learning situation in which teachers and
students do not meet face-to-face.
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[about business][about business]
Massive Open Online Courses
6.4
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Virtual Universities
• Online universities in which students take classes via the Internet at home or an off-site location.
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Telecommuting
• A process in which highly prized workers are able to work anywhere anytime.
• Knowledge workers• Advantages versus disadvantages
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[about business][about business]
Yahoo! CEO Marissa Mayer Bands Telecommuting
6.5
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[[ Closing Case Closing Case Fiber to All of Us? Fiber to All of Us? ]]
• The Problem
• Possible Solutions
• The Results