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