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Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
Chapter 6 Downloading & Storing Information
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Chapter 6 Downloading & Storing Information

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  • 1. Chapter 6 Downloading and Storing Information
  • 2. Learning Objectives <ul><li>Define the role and function of File Transfer Protocol (FTP). </li></ul><ul><li>Explain how to use command-line and GUI FTP client programs. </li></ul><ul><li>Demonstrate how file compression works and how to use file compression programs to compress and decompress files. </li></ul>
  • 3. Learning Objectives <ul><li>Describe how software download sites work and how to download programs from software download sites. </li></ul><ul><li>Compare and contrast shareware and freeware. </li></ul><ul><li>Explain online storage and how to create an online storage account. </li></ul>
  • 4. Chapter Focus <ul><li>File Transfer Protocol (FTP) </li></ul><ul><li>Command-Line FTP Client Program </li></ul><ul><li>Web Browser FTP Use </li></ul><ul><li>Dedicated FTP Client Programs </li></ul><ul><li>File Compression Utilities </li></ul><ul><li>Software Download Sites </li></ul><ul><li>Online Storage </li></ul>
  • 5. File Transfer Protocol (FTP) <ul><li>Developed to enable users to transfer files between networked computers </li></ul><ul><li>Does not set limits on sizes and types of files to transfer </li></ul><ul><li>FTP Server Software </li></ul><ul><ul><li>With permission, allows client (local) computers access to files in specified folders (directories) on the server (host) computer </li></ul></ul><ul><li>Anonymous FTP servers </li></ul><ul><ul><li>Open to the public </li></ul></ul><ul><ul><li>Typically allow only downloading </li></ul></ul>
  • 6. File Transfer Protocol (FTP) <ul><li>Command-Line FTP client programs </li></ul><ul><ul><li>User types simple commands </li></ul></ul><ul><li>Graphical user interface (GUI) FTP client programs </li></ul><ul><ul><li>Point-and-click interface with buttons or menus and allows dragging and dropping of files </li></ul></ul><ul><li>Process to perform FTP operations </li></ul><ul><ul><li>Connect to FTP server </li></ul></ul><ul><ul><li>Start an FTP session (login) </li></ul></ul>
  • 7. File Transfer Protocol (FTP) GUI FTP Client Program
  • 8. File Transfer Protocol (FTP) Review <ul><li>What advantages does FTP offer compared to transferring files through e-mail? </li></ul><ul><li>What three items are necessary to transfer files to and from another computer via FTP? </li></ul><ul><li>What passwords do anonymous FTP sites usually accept? </li></ul>
  • 9. Command-Line FTP Client Program <ul><li>To connect in Windows Vista </li></ul><ul><ul><li>Click Start </li></ul></ul><ul><ul><li>Type ftp in the Instant Search box and then press Enter </li></ul></ul>
  • 10. Command-Line FTP Client Program <ul><li>To begin a command-line FTP session type open followed by the FTP host’s URL or IP address and then press Enter </li></ul><ul><ul><li>To connect in Windows Vista </li></ul></ul><ul><ul><ul><li>Click Start </li></ul></ul></ul><ul><ul><ul><li>Type ftp in the Instant Search box and then press Enter </li></ul></ul></ul><ul><ul><ul><li>Type commands in lowercase followed by a space and then text –if text is necessary such as a file or folder name </li></ul></ul></ul><ul><ul><ul><li>After typing the command and any necessary text, press Enter to execute the command </li></ul></ul></ul>
  • 11. Command-Line FTP Client Program <ul><li>Commands </li></ul><ul><ul><li>lcd </li></ul></ul><ul><ul><ul><li>Displays the current local folder on your computer </li></ul></ul></ul><ul><ul><li>lcd followed by a local computer or network drive and folder name </li></ul></ul><ul><ul><ul><li>Changes the local folder </li></ul></ul></ul>
  • 12. Command-Line FTP Client Program <ul><li>Commands </li></ul><ul><ul><li>dir </li></ul></ul><ul><ul><ul><li>Displays the contents of the current remote or host folder on the FTP server </li></ul></ul></ul><ul><ul><li>cd followed by a remote folder name </li></ul></ul><ul><ul><ul><li>Changes the current remote folder </li></ul></ul></ul><ul><ul><li>get followed by the file name </li></ul></ul><ul><ul><ul><li>Begins download process </li></ul></ul></ul><ul><ul><ul><li>File and folder names must be typed exactly as they appear on the screen </li></ul></ul></ul>
  • 13. Command-Line FTP Client Program <ul><li>Commands </li></ul><ul><ul><li>mget </li></ul></ul><ul><ul><ul><li>Can be used to download multiple files in one command </li></ul></ul></ul><ul><ul><ul><li>Separate each file name with a space </li></ul></ul></ul><ul><ul><ul><li>Typing y confirms a download and typing n rejects it </li></ul></ul></ul><ul><ul><li>disconnect or close </li></ul></ul><ul><ul><ul><li>Terminates a session – but leaves program open </li></ul></ul></ul><ul><ul><li>bye </li></ul></ul><ul><ul><ul><li>Closes the session and the program </li></ul></ul></ul>
  • 14. Command-Line FTP Client Program <ul><li>Transfer modes </li></ul><ul><ul><li>ASCII mode </li></ul></ul><ul><ul><ul><li>Text files </li></ul></ul></ul><ul><ul><li>Binary mode </li></ul></ul><ul><ul><ul><li>All other files </li></ul></ul></ul><ul><li>Content listings </li></ul><ul><ul><li>Remote folder names start with d </li></ul></ul><ul><ul><li>Remote file names start with a dash (-) </li></ul></ul>
  • 15. Command-Line FTP Client Program Command-Line FTP Session scroll bar
  • 16. Command-Line FTP Client Program Windows Vista Command-Line FTP Client Program Help command list request command definition request command definition command list
  • 17. Command-Line FTP Client Program Windows Vista Command-Line FTP Client Program Log On connection established successful log on password (invisible) user name for anonymous ftp request to establish connection with ftp server
  • 18. Command-Line FTP Client Program Command-Line FTP Client Folder and File Listings remote directory (begins with d ) remote file (begins with -) local (client) directory
  • 19. Command-Line FTP Client Program Command-Line FTP Program File Download hash marks represent download buffers successful download notification file name
  • 20. Command-Line FTP Client Program Review <ul><li>What does the mget command enable the user to do? </li></ul><ul><li>What command is used in a command-line FTP client to start an FTP session? </li></ul><ul><li>What are the two different transfer modes, and what type of file is each used for? </li></ul>
  • 21. Web Browser FTP Use <ul><li>Major browsers contain built-in GUI FTP capabilities </li></ul><ul><ul><li>Internet Explorer, Netscape Navigator, Mozilla Firefox, and Opera </li></ul></ul><ul><li>To start an FTP session in Internet Explorer </li></ul><ul><ul><li>Type the FTP host address in the browser Address bar and then press Enter </li></ul></ul><ul><ul><ul><li>Example: ftp.irs.gov </li></ul></ul></ul>
  • 22. Web Browser FTP Use <ul><li>When connection is made to an FTP site </li></ul><ul><ul><li>If a username and password is required, a dialog box will be given </li></ul></ul><ul><ul><li>Once connected to an FTP site click the Page button in the Standard Toolbar and click Open FTP Site In Windows Explorer to open the FTP site in a Windows Explorer window </li></ul></ul><ul><ul><li>Will again be prompted for username and password, but the dialog box provides an additional checkbox option to save password </li></ul></ul>
  • 23. Web Browser FTP Use <ul><li>When user is logged in </li></ul><ul><ul><li>Click the Folders button to display a tree hierarchy on local and remote computer or networks </li></ul></ul><ul><ul><li>Top folder is known as a root folder </li></ul></ul>
  • 24. Web Browser FTP Use Log On As Dialog Box
  • 25. Web Browser FTP Use Explorer Bar Showing Folder Tree Forward Server address Search Back Local Files and Folders Click the Folders button to display the Folder Tree Explorer bar
  • 26. Web Browser FTP Use <ul><li>User can click the Views button to change the way the main browser pane lists folders and files </li></ul><ul><ul><li>As in the Windows Explorer file manager available views include Tiles, Icons, List </li></ul></ul><ul><li>The easiest way to download files from the FTP site is by dragging and dropping between Internet Explorer and a separate Computer window </li></ul><ul><ul><li>Computer window can be opened by clicking Start and then Computer </li></ul></ul><ul><ul><li>Files and folders can be dragged from Internet Explorer to the open folder in the Computer window </li></ul></ul><ul><ul><li>Multiple files can be selected by holding down the Ctrl key when making selections </li></ul></ul>
  • 27. Web Browser FTP Use <ul><li>Files can also be downloaded from an FTP server by right-clicking the desired file in the browser window and then clicking Copy to Folder in the shortcut menu that appears </li></ul><ul><li>Standard file management tasks such as renaming, deleting, cutting, and pasting are available when accessing an FTP site with Internet Explorer </li></ul><ul><li>A warning message or symbol mouse pointer will appear if a user attempts to execute a forbidden activity </li></ul>
  • 28. Web Browser FTP Use Copying Message Box
  • 29. Web Browser FTP Use Browse For Folder Dialog Box
  • 30. Web Browser FTP Use Forbidden Activity Symbol forbiddeen activity symbol indicating prohibited file movement
  • 31. Web Browser FTP Use Review <ul><li>How can you start an FTP session using Internet Explorer? </li></ul><ul><li>What happens if a user attempts to execute a forbidden activity? </li></ul><ul><li>What techniques can you use to transfer files from an FTP server accessed via Internet Explorer? </li></ul>
  • 32. Dedicated FTP Client Programs <ul><li>Dedicated GUI FTP client programs </li></ul><ul><ul><li>Offer additional convenient features </li></ul></ul><ul><ul><li>Feature a split-view interface </li></ul></ul><ul><ul><ul><li>Local folders/files in left pane </li></ul></ul></ul><ul><ul><ul><li>Remote server folders/files in right pane </li></ul></ul></ul><ul><ul><li>Ability to save FTP addresses and log-on information, connection wizards, and so on </li></ul></ul><ul><li>Many are shareware, some are freeware </li></ul><ul><ul><li>Filezilla – freeware and open source </li></ul></ul>
  • 33. Dedicated FTP Client Programs FTP Command Interface Connection Wizard button Local computer folders and files Download progress Remote server folder and files
  • 34. Dedicated FTP Client Programs Review <ul><li>What do the panes in a split-view GUI FTP client interface show? </li></ul><ul><li>How can files and folders be transferred using GUI FTP clients? </li></ul>
  • 35. File Compression Utilities <ul><li>Use algorithms to compact the data in a file </li></ul><ul><ul><li>Resulting new file is smaller than the original </li></ul></ul><ul><ul><li>Economizes file storage, transfer, e-mail attachments </li></ul></ul><ul><li>Text files can be reduced by 50% or more </li></ul><ul><li>Many image formats are already stored in a compressed format, so savings are not significant </li></ul><ul><li>When a file is decompressed and restored, no data is lost, file size is back to original size </li></ul>
  • 36. File Compression Utilities WinZip Classic Interface Showing Compression Statistics uncompressed file size (bytes) percentage file size reduction compressed file size (bytes)
  • 37. File Compression Utilities <ul><li>WinZip is one of the most popular compression utilities </li></ul><ul><li>Most compression utilities create compressed files with a .zip file name extension </li></ul><ul><li>Compressing is known as zipping a file </li></ul><ul><li>Decompressing is known as unzipping or extracting a file </li></ul><ul><li>WinZip files are known as archives, and an archive can contain one or more compressed files </li></ul>
  • 38. File Compression Utilities WinZip Wizard
  • 39. File Compression Utilities Review <ul><li>How do compression utilities work? </li></ul><ul><li>What is an archive? </li></ul><ul><li>What file types will not result in a smaller file size when compressed using a lossless compression technology? </li></ul>
  • 40. Software Download Sites <ul><li>Sites such as www.tucows.com and www.download.com offer freeware and shareware software programs for download and installation </li></ul><ul><li>Freeware </li></ul><ul><ul><li>Copyrighted software </li></ul></ul><ul><ul><li>Developer makes available for free distribution and use </li></ul></ul><ul><ul><li>Developer requires no compensation, but requires that software not be modified or sold </li></ul></ul><ul><ul><li>May contain more bugs or errors than commercial programs that have gone through extensive testing </li></ul></ul>
  • 41. Software Download Sites Tucows Software Download Site Home Page Search engine Downloads sorted by operating system Download categories Other download categories
  • 42. Software Download Sites <ul><li>Shareware </li></ul><ul><ul><li>Can be released as trial ware or demo software </li></ul></ul><ul><ul><li>Usually require payment and registration after limited trial period – usually 30 days </li></ul></ul><ul><ul><li>If not registered, software may be disabled, or pop-up windows may periodically appear to remind user to register and pay </li></ul></ul><ul><ul><li>Once registered, additional or enhanced features of the software may be enabled </li></ul></ul>
  • 43. Software Download Sites Shareware Product Registration Screen
  • 44. Software Download Sites Download Site Program Descriptions
  • 45. Software Download Sites <ul><li>Mirror site server </li></ul><ul><ul><li>Duplicates the contents of another server </li></ul></ul><ul><ul><li>Takes some of the load off the busier server </li></ul></ul><ul><ul><li>Periodic updates must be made to the mirror sites to ensure they reflect any changes made to the original site </li></ul></ul>
  • 46. Software Download Sites Download Mirror Site Selection Mirror locations Mirror sites
  • 47. Software Download Sites File Download Dialog Box
  • 48. Software Download Sites Review <ul><li>What is a software download site? </li></ul><ul><li>What is the difference between freeware and shareware? </li></ul><ul><li>What are mirror sites? </li></ul>
  • 49. Online Storage <ul><li>Provide remote storage space on their servers that can be accessed online </li></ul><ul><li>Once an account is established, user can log on with a user name and password to use his or her designated storage space </li></ul><ul><li>Most providers back up the storage services to protect against data loss </li></ul><ul><ul><li>But if provider goes out of business, for example, data could still be lost </li></ul></ul><ul><ul><li>Always have a secondary backup </li></ul></ul>
  • 50. Online Storage Online Storage Trial Offer
  • 51. Online Storage Yahoo! Briefcase Additional Storage Space Offers
  • 52. Online Storage Review <ul><li>What are some of the methods that can be used to upload and download files to or from an online storage service? </li></ul><ul><li>What can an online storage service be used for? </li></ul>

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