Ch+01+Computer+Network+Fundamentals

Ch+01+Computer+Network+Fundamentals - Chapter One...

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Chapter One Introduction to Computer Networks and Data Communications Data Communications and Computer Networks: A Business User's Approach, Fourth Edition
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Data Communications and Computer Networks: A Business User's Approach, Fourth Edition 2 After reading this chapter, you should be able to: Define the basic terminology of computer networks Recognize the individual components of the big picture of computer networks Outline the basic network connections Define the term “convergence” and describe how it applies to computer networks Cite the reasons for using a network architecture and explain how they apply to current network systems
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Data Communications and Computer Networks: A Business User's Approach, Fourth Edition 3 After reading this chapter, you should be able to (continued): List the layers of the OSI model and describe the duties of each layer List the layers of the TCP/IP protocol suite and describe the duties of each layer Compare the OSI model and TCP/IP protocol suite and list their differences and similarities
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Data Communications and Computer Networks: A Business User's Approach, Fourth Edition 4 Introduction Who today has not used a computer network? Mass transit, interstate highways, 24-hour bankers, grocery stores, cable television, cell phones, businesses and schools, and retail outlets support some form of computer network
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Data Communications and Computer Networks: A Business User's Approach, Fourth Edition 5 The Language of Computer Networks Computer network – an interconnection of computers and computing equipment using either wires or radio waves over small or large geographic areas Local area network – networks that are small in geographic size spanning a room, floor, building, or campus Metropolitan area network – networks that serve an area of 1 to 30 miles, approximately the size of a typical city
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Data Communications and Computer Networks: A Business User's Approach, Fourth Edition 6 The Language of Computer Networks (continued) Wide area network – a large network that encompasses parts of states, multiple states, countries, and the world Personal area network – a network of a few meters, between wireless devices such as PDAs, laptops, and similar devices Voice network – a network that transmits telephone signals Data network – a network that transmits computer data
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Data Communications and Computer Networks: A Business User's Approach, Fourth Edition 7 The Language of Computer Networks (continued) Data communications – the transfer of digital or analog data using digital or analog signals Telecommunications – the study of telephones and the systems that transmit telephone signals Network management – the design, installation, and support of a network, including its hardware and software
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Data Communications and Computer Networks: A Business User's Approach, Fourth Edition 8 The Big Picture of Networks Networks are composed of many devices,
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Ch+01+Computer+Network+Fundamentals - Chapter One...

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