The Internet

CIS 1300 – Web Design Software M i c h a e l J . L o s a c c o

The Internet

An Overview

CIS 1300 – Web Design Software

Services

• Internet Services– World Wide Web– E-mail– File Transfer– Newsgroups– Message Board– Chat– Instant Messaging


History

• Origination

– ARPANET — Networking Project by Pentagon

• Advanced Research Projects Agency (ARPA)

– Became Functional September 1969

– Renamed Internet in the Late 1980s

– World Wide Web Proposed In 1989

• Tim Berners-Lee


History

• Control– Public, Cooperative, & Independent Network– Internal Structure

• Public & Private Organizations• Telephone, Cable, & Satellite Companies• Governments

– World Wide Web Consortium (W3C)• Oversees Research, Sets Standards & Guidelines• Tim Berners-Lee, Director


Internet Mechanics

• Access Providers

– ISP (Internet Service Provider)

– OSP (Online Service Provider)

• Member-only Features

• AOL

• MSN

– Wireless


Internet Mechanics

• Addressing– IP (Internet Protocol) Address

• Identifies Each Device Connected to Internet

• Unique Number– 2.7/3.7 Billion Used

» Run Out in 2012

– IPv6 = 3.4 x 1038 v. 232

– Domain Name• Text Version of IP Address


Internet Mechanics

• Addressing– TLD (Top Level Domain)

• Identifies Type of Organization• ccTLD

– Two-letter Country Code Outside US

• ICANN Assigns & Controls TLDs

– DNS (Domain Name System)• DNS Server

– Translates Domain Name to IP Address


World Wide Web

• Collection of Electronic Documents– Worldwide

• Each Document is Called a Web Page– Contains Text, Graphics, Sound, Video

– Contains Links to Other Pages

• Web Site– Collection of Related Web Pages


World Wide Web

• Web 2.0

– Allow Users to Modify Site Content

– Way for Users to Share Personal Info

– Have User Application Software Built into Site


World Wide Web

• Web Browser– Program that Allows You to View Web Pages

• Internet Explorer

– Spent $1.25 B

• Netscape

• Mozilla

– Firefox

• Safari


World Wide Web

• Web Addressing– URL (Uniform Resource Locator)

• Unique Address for Page Located on Web Server

protocol domain path

http://www.nationalgeographic.com/travel/index.html

name


World Wide Web

• Site Types

– Standard

– Portal

• Search, News, Weather, Reference, Shopping

– Blog (Web Log)

• Informal Journal / Diary Posts

• Reflect Interest & Opinion of Author


World Wide Web

• Site Types– Wiki

• Collaborative Site

• Users Create, Add, Modify, Delete Content

– Content Aggregator

• Gathers, Organizes, Distributes Content

• RSS (Really Simple Syndication)


World Wide Web

• Multimedia– Graphics

• GIF, JPG, PNG

– Audio• MP3, WAV

– Compression to 1/10 Original Size

• Streaming– Transfers Data in Continuous & Even Flow

• Podcast


World Wide Web

• Multimedia– Video

• MPG, AVI, MOV, WMV• Vodcast

– VR (Virtual Reality)• Second Life, There

– Avatar

– Plug-in• Programs that Extend Browser Capability


Other Internet Services

• E-Commerce

– Shopping Cart

• Collect Purchases

– Online Auction

– Paypal

• Online Payment Service



• E-mail– Transmission of Messages Over Internet

• Messages May Include Attachments

– Files, Graphics, Audio, Video

– Virus

– Volume• 1.4 Billion Active Accounts Worldwide

• 183 Billion E-mails Sent Daily in 2006

Radicati Group 10/06



• FTP (File Transfer Protocol)– Allows Upload / Download of Files

• Files Located on FTP Servers• Use FTP Client Program to Access

• Mailing List– Topical E-mail Discussion Group – You Must Subscribe to a Mailing List

• E-mail Sent to Listserv

• Listserv Distributes E-mail to All Subscribers



• Newsgroup

– Users Conduct Written Topical Discussions

• 65,000+ Topics

– Stored on News Server

– Usenet

• Entire Collection of Newsgroups



• Newsgroup– User Sends Message to Newsgroup

• AKA Article

– Others in Newsgroup Read / Reply• AKA Thread

– Read with Newsreader Program– FAQ (Frequently Asked Questions)

• Find Out What is Appropriate for Newsgroup• Same Questions do not Need Repeated Answers



• Message Board– AKA Discussion Board– Web-based Version of Newsgroup– Newsreader not Required

• Chat– Real-time Typed Conversation

• Discuss Topics of Interest– Chat Room

• Location on Server that Permits Discussion



• Instant Messaging (IM)

– Real-time Typed Conversation

– Indicate Who You Would Like to Speak With

• AKA Buddy List

– Notifies When One or More People Online

– Exchange Messages or Files



• Internet Telephony (VoIP)

– Voice Communication Over Internet

– Replaces Standard Telephone Service

• Vonage


Netiquette

• Code of Behavior

– Emoticons & Smileys

• :-) :-( ;-) :-o :’-( :o)

– CAPS

– 13-year-old Commits Suicide (10/06)

• Fake MySpace Profile Created to Start Relationship


Netiquette

• Flaming– 58% Have Been Flamed Online

• 40% More than Once

– 53% Have Flamed Others Online• 33% More than Once

– 35% Have Been Threatened Online• 20% More than Once

– 58% Have Not Told Parents or Adult

iSafe.org


Netiquette

• Flaming– 15 % Receive Unwanted Sexual Communication

• During Past Year

• Included

– Solicitations for Sex

– Conversations About Sex

– Questions About Bra Size

» Or Other Personal Sexual Information

Internet Solutions for Kids

Date post:	25-Feb-2016
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