1. Chapter 7

2. Module 7AUnderstanding the Internet Module 7BUsing email 7

3. 7 Understanding the Internet l Introducing the Internet l Internet Software l Exploring Internet Services l How the Internet Works l Intranets l The Future of the Internet Module A

4. 7 A Introducing the Internet: The Network of Networks The Internet is the first mass medium that involves computers and uses digitized data. It’s much more interactive than TV, radio, or newspapers. Understanding the Internet Looking for a radio station? Try Live Radio on the Internet, which lists more than 1500 live Internet radio stations worldwide.Live Radio on the Internet

5. 7 Introducing the Internet l A galactic network äInternet address or IP address äInternet service provider (ISP) l Interoperability äcross-platform network A Module Understanding the Internet LANs and computers connected to the Internet are maintained by corporations, ISPs, and universities who sell Internet subscriptions to the public.

6. 7 Introducing the Internet l Leave the lower layers to the LANs & WANs l Internet vs. online services äAOL A Module Understanding the Internet Forty percent of home Internet users access the Internet through America Online (AOL).

7. 7 Introducing the Internet A Module Understanding the Internet

8. 7 Introducing the Internet l The Internet’s history äimportance of communication & socializing äfrom ARPNET to Internet ärise of a new mass medium A Module Understanding the Internet To learn more about Internet history visit the Internet Society’s Internet Histories page.Internet Society’s Internet Histories page.

9. 7 Internet Software l Internet service äclient & Server A Module Understanding the Internet Netscape Navigator and Microsoft Internet Explorer are the two leading browsers.

10. 7 Exploring Internet Services l Electronic mail (Email) : Staying in touch l World Wide Web (WWW) : Accessing information ähypertext ähyperlinks äURL A Module Understanding the Internet Big Bad Voodoo Daddy site is an example of a site that features hypertext

11. 7 Exploring Internet Services l FTP: Transferring files äFTP ädownloading & uploading äanonymous FTP äcompression software l Usenet: Joining online discussions ästandard newsgroups äalt newsgroup äbiz newsgroups A Module Understanding the Internet Learn the rules of netiquette by visiting Emily Postnews, the authoritative voice concerning Usenet manners.Emily Postnews, the authoritative voice concerning Usenet manners.

12. 7 Exploring Internet Services l IRC: Text chatting in real time äInternet Relay Chat (IRC) l Internet telephony: Real time voice & video l More Internet services äInternet paging äMUDs ätelnet äping äArchie, Gopher, Veronica A Module Understanding the Internet To get started with IRC, visit the IRChelp.org Help Archive.IRChelp.org Help Archive

13. 7 How the Internet Works: A Geography of Cyberspace l Configuring your computer for Internet access l Accessing the Internet äshell access ädial-up access with point-to-point protocol (PPP) äcable and satellite access äLAN access A Module Understanding the Internet

14. 7 How the Internet Works: A Geography of Cyberspace l Internet Service Providers (ISPs) l Backbones l Internet protocols (TCP/IP) äInternet protocol (IP) ätransmission control protocol (TCP) A Module Understanding the Internet Looking for an ISP? A good place to start is The List that currently lists nearly 5,000 service providers.The List Explore the Internet’s physical structure at “An Atlas of Cyberspace”“An Atlas of Cyberspace”

15. 7 How the Internet Works: A Geography of Cyberspace l Domain Name System (DNS) ägov äedu ämil äcom änet A Module Understanding the Internet See for yourself how the domain name service operates. Access the NSLOOKUP page and type in a domain name such as www.microsoft.com. Click the Run button, and you’ll see the IP address below.NSLOOKUP page

16. 7 The Internet l Intranets: Using TCP/IP inside the enterprise äextranets l Future of the Internet ämore Internet addresses ämore bandwidth A Module Understanding the Internet

17. 7 Using Email l Email Fundamentals l Introducing Email Clients l Composing, Receiving, & Forwarding Email l Managing Email l Mailing Lists l Using Email Responsibly Module B

18. 7 Email Fundamentals l Email servers & clients B Module Using Email An e-mail server runs on your ISP’s computer. When you send mail, the server sends your mail over the Internet. An e-mail client runs on your computer and enables you to read and reply to received messages, compose new ones, and forward mail. User ISP Client Server

19. 7 Email Fundamentals l Email addresses have 3 parts ämailbox name jsmith äat sign @ äserver address jamestown.edu äalias äbounce message l Email protocols äSMTP äMIME äPOP äIMAP Module B Using Email Jsmith@jamestown.edu

20. 7 Introducing Email Clients l Getting an account äfree email service l Setting up your email client Module B Using Email Among the most popular free e-mail services are Angelfire, Hotmail, and Yahoo! Mail.Angelfire HotmailYahoo! Mail

21. 7 Introducing Email Clients l Exploring your email client’s window äfolder list ämessage list ämessage window Module B Using Email Although email programs vary, they all look and work much the same way.

22. 7 Composing, Receiving & Forwarding Email l Logging on to the mail server l Receiving mail l Replying directly to the author l Replying to all Module B Using Email A dialog box prompts you for your password before you can access your email account

23. 7 Composing, Receiving & Forwarding Email l Composing email l Forwarding email Module B Using Email The composition window

24. 7 Composing, Receiving & Forwarding Email Module B Using Email When you receive a file that has an attachment, you’ll see an icon informing you that there’s more to the message than text alone Attachment icon

25. 7 Managing Email l Organizing your mail l Filtering incoming mail l Dealing with unwanted mail (Spam) Module B Using Email Custom folders for a college student might include various classes, friends, and family members.

26. 7 Mailing Lists l Subscribing to a mailing list l Participating in a mailing list l Unsubscribing äflames (angry letters) Module B Using Email To find a mailing list in a subject that interests you, try “Mailing Lists on the Net,” Liszt, and “Publicly Accessible Mailing Lists” “Mailing Lists on the Net,LisztPublicly Accessible Mailing Lists”

27. 7 Using Email Responsibly l Using email at work l Backup tapes l Additional risks Module B Using Email For an update on the latest email and other Internet hoaxes, see the U.S. Department of Energy’s “Internet Hoaxes” pageU.S. Department of Energy’s “Internet Hoaxes” page

28. 7 Using Email Responsibly l How to stay out of trouble äDo not use company email for personal use äNever respond to junk email (spam) äNever use email to harass or intimidate äWhen using company’s email, never say anything you wouldn’t want your boss to see Module B Using Email