1. Mgt 240 Lecture The Internet: Computing at ND October 28, 2004

2. Exam One Grades will be posted on course web site this afternoon Grades will be posted on course web site this afternoon Range from 97.5 to 41.5 Range from 97.5 to 41.5 Median of 73 Median of 73 Average of 70 Average of 70

3. Exam One

4. Current Course Grade Distribution

5. Exam One If you would like to see your exam, you will need to come to my office If you would like to see your exam, you will need to come to my office Extra office hours next week so that you can come and look at your exam Extra office hours next week so that you can come and look at your exam Tuesday 10-Noon Tuesday 10-Noon Wednesday 10-Noon Wednesday 10-Noon Thursday 10-Noon Thursday 10-Noon

6. Exam One Things to think about when assessing your exam performance Things to think about when assessing your exam performance Did you attend all the lecture class sessions? Did you attend all the lecture class sessions? Did you do the readings and practice answering the reading questions as they were assigned? Did you do the readings and practice answering the reading questions as they were assigned? To do well on the exam, you needed to do both these things To do well on the exam, you needed to do both these things What to do to improve your course grade What to do to improve your course grade Do well on homeworks, cases Do well on homeworks, cases Come to lecture and lab class sessions Come to lecture and lab class sessions Do the assigned readings and tutorials Do the assigned readings and tutorials

7. Attendance – Section 1.3 correlation between attendance and exam performance 7 point difference in the exam averages of students who attended 5 sessions versus 4

8. Attendance – Section 2.33 correlation between attendance and exam performance 10 point difference in exam averages between students who attended all lecture classes and students who attended 2 or less

9. What is the Internet? Global computer network Global computer network Ad hoc linkage of many networks that adhere to basic standards Ad hoc linkage of many networks that adhere to basic standards TCP/IP TCP/IP No single entity is in charge of the internet No single entity is in charge of the internet Perpetually evolving Perpetually evolving Started as a DOD project Started as a DOD project

10. How the Internet Works Internet Protocol (IP) Internet Protocol (IP) Standard for assigning computer addresses Standard for assigning computer addresses All computers connected to the internet have an IP address All computers connected to the internet have an IP address Transport Control Protocol Transport Control Protocol Standard for controlling communications between two computers Standard for controlling communications between two computers

11. Routing Messages Over the Internet

12. Three Ways to Access the Internet

13. A Representative List of Internet Service Providers A Representative List of Internet Service Providers

14. How We Use the Internet Use of internet constantly evolving Use of internet constantly evolving Some of the many uses: Some of the many uses: Sending email Sending email Exchanging files or data Exchanging files or data Making phone calls Making phone calls Commerce Commerce Others? Others?

15. U.S. Internet Usage by Age, Gender, Region, and Income

16. Summary of Internet Services

17. E-mail SMTP – simple mail transfer protocol SMTP – simple mail transfer protocol SMTP – simple mail transfer protocol SMTP – simple mail transfer protocol IMAP (internet message access protocol) IMAP (internet message access protocol) IMAP (internet message access protocol) IMAP (internet message access protocol) Stores mail on server Stores mail on server Allows use of server-based folders Allows use of server-based folders Can access mail from any computer that can access server Can access mail from any computer that can access server POP (post office protocol) POP (post office protocol) POP (post office protocol) POP (post office protocol) Stores mail on server only until you access it with an email client Stores mail on server only until you access it with an email client Designed to download mail to your pc Designed to download mail to your pc Folders on pc Folders on pc

18. E-mail at ND Server-based email: Webmail Server-based email: WebmailWebmail Access mail on the server Access mail on the server Secure connection to server and user authentication Secure connection to server and user authentication Folders Folders Address book Address book Filters Filters Directory service Directory service Quota on mail server Quota on mail server Quota on mail server Quota on mail server Soft quota of 50MB Soft quota of 50MB Hard quota of 250MB Hard quota of 250MB

19. E-mail at ND PC-based email: Netscape, Eudora, Microsoft Outlook or Outlook Express PC-based email: Netscape, Eudora, Microsoft Outlook or Outlook Express Obtaining an email client Obtaining an email client Obtaining an email client Obtaining an email client E-mail client set up instructions E-mail client set up instructions E-mail client set up instructions E-mail client set up instructions PC-based email clients allow you to PC-based email clients allow you to Secure connection to the mail server and user authentication Secure connection to the mail server and user authentication Access your email on the server Access your email on the server Download your email to your PC Download your email to your PC Organize your email into folders on your PC Organize your email into folders on your PC Send, receive, categorize emails Send, receive, categorize emails

20. The World Wide Web An Internet service comprising tens of thousands of independently owned computers that work together as one. Based on standards that web servers and web browsers understand: Hypertext transfer protocol (HTTP) Hypertext transfer protocol (HTTP)HTTP Hypertext markup language (HTML) Hypertext markup language (HTML)HTML Uniform Resource Locator (URL) Uniform Resource Locator (URL)URL Standard for web addresses Standard for web addresses http – high level protocol used http – high level protocol used www – web server www – web server nd.edu – domain name nd.edu – domain name

21. Sample HTML

22. URL Examples University of Notre Dame University of Notre Dame University of Notre Dame University of Notre Dame The White House The White House The White House The White House WhiteHouse.com WhiteHouse.com WhiteHouse.com

23. U.S. Top-Level Domain Affiliations.aeroAviation.bizBusiness Organizations.comCommercial.coopCo-Operative Organizations.eduEducational.govUS Government.infoOpen TLD.intInternational Organizations.milUS Dept of Defense.museumMuseums.namePersonal.netNetworks.orgOrganizations

24. Search Engine

25. Web Resources at ND ND Web Central ND Web Central ND Web Central ND Web Central Using shared file space to publish a web site Using shared file space to publish a web site Using shared file space to publish a web site Using shared file space to publish a web site

26. Web Resources at ND Creating a personal web page Creating a personal web page Create an html file named index.html Create an html file named index.html Designate either the n: or h: drive as your preferred web site location Designate either the n: or h: drive as your preferred web site location Designate either the n: or h: drive as your preferred web site location Designate either the n: or h: drive as your preferred web site location Place this file in your www folder on the drive you have chosen Place this file in your www folder on the drive you have chosen Now you should see the file when you type the url: http://www.nd.edu/~yournetid Now you should see the file when you type the url: http://www.nd.edu/~yournetid http://www.nd.edu/~yournetid All other files that you link to your web page must also be placed in this folder All other files that you link to your web page must also be placed in this folder Limiting access to Notre Dame community Limiting access to Notre Dame community Limiting access to Notre Dame community Limiting access to Notre Dame community

27. File Transfer Protocol Standard for transferring files over the internet Standard for transferring files over the internet Can be used to access your H: or N: drive from any computer as an alternative to WebFile Can be used to access your H: or N: drive from any computer as an alternative to WebFile Will be using ftp to upload web files to the web server when working on your web assignments and projects Will be using ftp to upload web files to the web server when working on your web assignments and projects There are a number of ways to use ftp There are a number of ways to use ftp

28. FTP Terminology Hosts and Clients The machine on which you start FTP becomes the “client” The machine you access with FTP becomes the “host” Also, sometimes the client is called the “local” machine, and the host is called the “remote” machine

29. FTP In order for a machine to be a host for you, that machine must be set up to accept you as a client. Typically, this is done by the system administrator. Once this is done, you will be required to enter a login and password so that the host machine recognizes you as an approved client. Uploading and Downloading When you transfer a file from the client machine to the host machine, you are “uploading” the file. When you transfer a file from the host machine to the client machine, you are “downloading” the file.

30. Using FTP in Dreamweaver

32. FTP Using Your Browser Let’s say you’re sitting in an airport and you would like to be able to work on some of your AFS files via the internet, but you are using a machine that does not an FTP client program This is no problem, because you can use a Netscape or Explorer web browser as a client also All you need to do is enter the FTP address of the host in the ‘Address’ box of your browser. This address is almost identical to the address that you used with F-Secure, except you drop the ‘ s’ at the beginning. This is what your FTP address should look like: ftp://username@darwin.cc.nd.edu

33. FTP Using Your Browser Once you enter the FTP address, you will be asked to supply the required password. You will then be able to see the folders of your AFS space within the web browser. Downloading Files: When using the web-browser, performing file transfer is not quite as easy as with F-Secure. You cannot download a file by clicking and dragging a file from the host to the client. Rather, you must first right -click on the file in the host directory and then either open it or save it to a folder in your client directory. Uploading Files: However, you may upload a file by clicking on a file in the client directory and dragging it to the host directory.

34. FTP Using F-Secure One of the easiest ways to use FTP is through a software package called F-secure, which can be downloaded for free from the Notre Dame OIT software package download pageNotre Dame OIT software package download page This page can be accessed through: http://www.nd.edu/~ndoit/software/ Click on ‘Software Downloads’ Scroll down to ‘F-Secure for Windows’ and double click. Now follow the downloading instructions, and you are in business.

35. FTP Using F-Secure F-Secure is an excellent way to easily transfer files between a host and client machine because it provides a very intuitive interface. You can transfer files between drives by click and drag. When you first open F-Secure (open F-Secure SSH File Transfer), you will see at the bottom of the interface “Not Connected”. So now you’ve got to connect to a host (remote) drive by entering the host name or the IP address of the host machine.

36. F-Secure: Entering the FTP Address You need to know the FTP address of the host machine that you are trying to access. For example: darwin.cc.nd.edu Click on “Quick Access” Enter darwin.cc.nd.edu for the Host Name/IP address Then type in your user name (NetID): for example, dballou Click ‘Connect.’ Now a window will pop up requesting your password. Enter the correct AFS password, and then you will be connected.

37. F-Secure Now that you are connected to the host using F-Secure, transferring files between the host and client is a snap All you need to do to transfer a file is to select it—you can select multiple files by holding down the ctrl key while selecting—and drag it from one drive to the other Or you can use the upload/download from the toolbar Depending on the size of the file and the speed of your internet connection, the transfer of the file can take seconds or many minutes

38. F-Secure If you are using a dial-up modem, be very careful of transferring huge data files--you’ll end up waiting for quite a while! However, if you have a high speed connection, even very large files can be transferred relatively quickly. You can also open a file to view by right clicking on the file in the host directory and selecting ‘Open.’ You may also save and delete files directly within F-Secure.