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Chapter 12 – Networks, Network Software, and the Internet
CMIT100 Chapter 12 – Networks, Network Software, and the Internet
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Learning Objectives Describe the role of network broadcast devices.
Differentiate between types of network media. Compare network topologies and classifications. Discuss the role of each layer in the TCP/IP protocol stack and the OSI model. Explain IPv4 addressing and compare it to IPv6. Introduce popular forms of network software. Present a brief history of the Internet. Describe how communication takes place over the Internet.
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What is a Network? A collection of computers and computer resources connected in such a way that the computers can communicate with each other and their resources.
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Terms Host Local Remote Topology
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Network Hardware Cabling Connectors Twisted Pair (CAT5e/6) Coaxial
Fiber Optic Connectors RJ45 BNC ST, SC, LC And many more…
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Network Hardware Hubs Switches
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Network Hardware Routers
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Network Hardware What happens hosts on this network communicate?
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Network Topologies
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Network Topologies Path through a network
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Types of Networks LAN PAN MAN WAN
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Physical Protocols Protocol: The set of rules established to govern how people behave and interact with each other. Ethernet CSMA/CD Frame Relay Token Ring LocalTalk NetBEUI
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Network Protocols TCP/IP AppleTalk IPX
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TCP/IP Protocol Stack Five Layers
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TCP/IP Communication through the stack
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192.168.1.100 IP Addresses Uniquely identifies a host on a network
32-bit Address Four Octets
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IP Address Classes
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Public vs. Private IP Addresses
Private addresses are non-routable on the Internet
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LAB Determine your computer’s IP Address
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The Internet A global system of interconnected computer networks
A network of networks Links several billion devices worldwide
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Visualization of Internet Routing Paths
The Opte Project July 2015
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History of the Internet
Created in the late 1960’s by the DoD Advanced Research Projects Agency ARPANET Linked Military facilities, Universities Nine computers on ARPANET in June 1970 57 computers on ARPANET by 1975 Renamed Internet in 1983 Hypertext Documents, HTTP The first web browser, Mosaic developed in 1994
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LAB The Internet Archive Wayback Machine
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Creative Commons Statement
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