INSY 3303 -- Topic_1 => Introduction to Data Communications

INSY 3303 -- Topic_1 => Introduction to Data Communications

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Topic #1 - Introduction to Data Communications Objectives Explain what a network is Understand basic networking concepts and terms Explain the advantages of using a network in the home Discuss the advantages of using a network in an office Determine boundaries between networks Describe network topologies Understand general network design concepts Design a simple LAN What Is a Network? Three types of networks Word-of-mouth communication Telephone Computer Computer networks Transmit information to person or group like word-of-mouth Use telephone network communication infrastructure Communication cables and radio waves Specialized equipment to connect networks Carry data, voice, and video communications Computer network components Computer hardware and software Print devices Network Devices System components linked using various media Copper wire Fiber-optic cables Radio waves Infrared waves Microwaves Benefit of computer networks: information sharing Computer Networks & Distributed 
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Removing the Mystery from Network Concepts Master basic networking concepts Different network types Different terms for various network elements Processes about how networks should work Understanding the Types of Networks Three types of networks Local area networks (LANs) Metropolitan area networks (MANs) Wide area networks (WANs)
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Personal area networks (PANs) LAN (Local Area Network) Interconnects computers, printers, other equipment Consists of shared hardware and software resources in close physical proximity Example: University Chemistry Department MAN (metropolitan area network) Spans a greater distance than a LAN Up to 48 kilometers (about 30 miles) Links multiple LANs within city or metropolitan region Typically uses fiber-optic/wireless connections LANs may be separately owned Example: Links to Chemistry building LAN Research hospital LAN Pharmaceutical company LAN WAN (wide area network) How the original network was formed. They decided that the Internet could be applied within an office to form an “intranet” Composed of two or more LANs or MANs Connected across distance greater than 48 km May have constituent LANs on different continents PAN (personal area network) Wireless keyboards, personal phone, etc. Bluetooth (works for up to 7 devices within range of 30-33 feet) Enterprise network => connecting everything within a company in order to do business properly Links different users across one or more organizations Provides variety of resources Used to fulfill business, research, educational tasks Typically consists of several LANs Example: Campus enterprise network
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Using Basic Networking Terms Node (or station): network component Personal computer, server, mainframe, minicomputer, printer, fax, CD-
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This note was uploaded on 04/15/2010 for the course INSY 3303 taught by Professor Kennethsears during the Spring '10 term at UT Arlington.

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INSY 3303 -- Topic_1 => Introduction to Data Communications

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