web fundaments
DESCRIPTION
CST108 Web FundamentalsTRANSCRIPT
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A Roane State Community College CourseMichael ChungLesson One – The Internet
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What the Internet is?
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Information high way
Network of networks
Comcast
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Communication Infrastructure
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Global Communication Infrastructure
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Global Communication Infrastructurewhere the language of TCP/IP is spoken
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It is… uh
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Global Communication Infrastructurethat uses TCP/IP protocol.
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We will learn what communication infrastructure is, and …
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… and what TCP/IP protocol is.
Common, Mr. President
It cannot be that bad!
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linksMetal wires – copper, silver, gold,
aluminum, etcFiber opticElectromagnetic wave – infra-red,
microwave, etcThink of others?
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Network devicesComputers,Routers,Switches,Satellites,Many others
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SoftwareNetworking operating systemsNetworking management software
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The communication infrastructure consists of
links, network devices, andsoftware
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The communication infrastructure consists of links, network devices, software, and personnel who run and take care it.
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the links that connect the network devices,
the software tells the devices what to do, and the people who takes care of it.
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the cable that enter your home is part of the links
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the computers, the modem, and the routers all along the way to your favorite sites are the network devices.
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The software running on the computers, routers, modems tell them what to do.
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Once you are connected, you are part of the Internet.
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It is a communication protocol for communication between computers
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it is the communication protocol for the Internet
TCP/IP
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a protocol defines the rules that all devices, including your computers, must follow to communicate with each other.
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You want to connect to the Internet, your computer must use TCP/IP protocol as the communication protocol.
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A software in your computer uses TCP/IP to connect to a server at www.myspace.com, and make a Web request
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using the TCP/IP to send you the web documents, including all the exciting pictures of your friends you requested
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They are happily married to each other
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Really, TCP and IP (and others) working together
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TCP takes care of the communication between a piece of software running in your computer, and another running on the server, like one at www.facebook.com.
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TCP uses special addresses called port numbers to associate the communicating software.
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TCP helps your browser or email software to send data, by breaking the data into small pieces for the IP to handle
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TCP assembles the pieces or packets when they arrive your computer
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TCP ensures nothing is missing….Otherwise, you will see your friends
without hands, ears, or noses on myspace.com, or not at all
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IP takes care of communication between the computer you are on and the computer you are requesting information from.
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Ms. IP has each computers and networking devices carried a unique number, called the IP address, among other information
Connection-specific DNS Suffix . : rscc.cc.tn.us Link-local IPv6 Address . . . . . : fe80::9404:cfba:28ba:b7ee%9 IPv4 Address. . . . . . . . . . . : 10.2.4.181 Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : 10.2.0.1
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With the help of routers, Ms. IP delivers the packet of data to the right place
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take my networking classes
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Everything
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The Internet is the beginning of everything
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Think of Web as one way we use the Internet.
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Web is an application of the Internet, and there are plenty of other applications.
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Think of the Internet as an endless opportunity and possibility to develop useful things, and to explore
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The definition of the Internet
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Ten years from now, I still expect you to remember this lesson
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We will learn about Web and how it works