MIS 2211 The Internet from a Technology Perspective A network of networks Comprised of hundreds of thousands of networks (nodes) throughout the world Very heterogeneous –All kinds and sizes of computers and networks Decentralized and unregulated

MIS 2212 The Internet: History US Government project to connect DoD agencies, researchers, etc. –Started in 1969 with four nodes –Opened to commercial organizations in 1993 Internet Backbone –Main fiber optic network linking nodes Internet Servers –Computers linked directly to the backbone Internet Service Providers –Businesses which provide access for individuals and organizations

MIS 2213 The Internet: Organization Nodes are assigned unique IP addresses –E.g Domain names correspond to IP addresses –E.g. Domain name servers translate names into IP addresses Suffixes provide a loose categorization of nodes –.com,.org,.net,.gov,.mil,.uk

MIS 2214 The Internet: Uses The World Wide Web File transfer –FTP –Combined with FTP for file attachment transfer Newsgroups Chap Telephony

MIS 2215 The World Wide Web Multimedia hypertext on internet-connected computers Hypertext Transfer Protocol (HTTP) –Standard for how to interpret text documents with imbed information about video, graphics, etc Hypertext Markup Language (HTML) –Hypertext is text containing tags which refer to other files Browsers: use HTTP to transmit, receive and interpret HTML files

MIS 2216 Creating Web Sites Use a web authoring tool (aka web page editor) Create multiple pages and link them together Publish resulting HTML files on a web server

MIS 2217 Other Web Topics Java –Developed by Sun Microsystems to extend HTMP capabilities –Small pieces of code which are executed within HTML pages –Very portable –Used for animation, sound and e-commerce XML –Defines type of data appearing in web pages –Could be very important to e-commerce

MIS 2218 Other Web Topics (Continued) Cookies –Small files placed on client computer by web site –Provides identification information to web host Intranet –All of the features and technology of the Internet –Only accessible from within a organization’s network