Task number 2. Archiving WinZip files

1. Run WinZip 7. ( Start →All Programs → 7-Zip→7 Zip File Manager ).

2. In the dialog box that appears, select the folder in which the archive will be created: My Documents/Technical School/ Technical School 1st Course/Group/Last Name/Archives/Pictures. Place the cursor on the name of the graphic file Winter.jpg . Execute the Add (+) command.

3. Enter a name for the archive in the ArchiveWinter.zip field and make sure that the Zip type is set in the Archive format field.

4. Set the Edit Mode field to Add and Replace.

5. In the Compression Level: drop-down list, select Normal. Start the archiving process with the OK button .

6. Compare the size of the original file with the size of the archive file. Record the data in table_1.

7. Create a password-protected Winter1.zip archive. To enter a password, in the Add to archive dialog box, in the Enter password field: enter the password, in the Repeat password field: confirm the password. Pay attention to the Show password checkbox. If it is not set, the password will not be displayed on the screen as you type, and its characters will be replaced by the wildcard character “*”. This is a measure to protect the password from strangers. However, in this case, the user cannot be sure that he typed the password correctly. Therefore, if the checkbox is not set, the system requests a second (control) password entry. Click on the OK button – the process of creating a protected archive will begin.

8. Select the Winter1.zip archive, execute the Extract command. In the Extract dialog box that appears, in the Unpack to: field, select the destination folder – My Documents / College / College 1st year / Group / Surname / Archives / Pictures / Winter1.

9. Click the OK button. The process of extracting data from the archive will not start, but instead a dialog box for entering a password will open.

10. Make sure that entering the wrong password does not allow you to extract files from the archive.

11. Verify that entering the correct password actually starts the process.

12. Delete the secure archive you created and the extracted files.

13. Create a self-extracting ZIP archive. To do this, place the cursor on the archive name Winter.zip , execute the Add (+) command.

14. Enter a name for the archive in the ArchiveWinter.7z field and make sure that the Archive format field is set to 7z .

15. Set the Edit Mode field to Add and Replace.

16. Check the Create SFX archive box.

17. From the Compression Level: drop-down list, select Normal. Start the archiving process with the OK button .

18. Similarly, create archives for the files Rowan.bmp, Document1.doc, Document2.doc, Document3.doc. Comparative characteristics of the source files and their archives are entered in table_1.

Task number 3. Archiving WinRar files

1. Run WinRar ( Start → All Programs → WinRar ).

2. In the dialog box that appears, select the folder in which the archive will be created: My Documents/Technical School/ Technical School 1st Course/Group/Last Name/Archives/Pictures.

3. Place the cursor on the name of the graphic file Winter.jpg .

4. Execute the Add command. In the dialog box that appears, enter the name of the Winter.rar archive. Select the format of the new archive – RAR , compression method – Normal . Make sure none of the boxes in the Backup Options group are checked. Click the OK button to create the archive. During archiving, a window with statistics is displayed. At the end of archiving, the statistics window will disappear, and the created archive will become the current selected file.

5. Create archives for the Rowan.bmp, Document1.doc, Document2.doc, Document3.doc files in the same way. Comparative characteristics of the source files and their archives are entered in table_1.

6. Create a self-extracting RAR – an archive that includes text and image files.

7. Determine the percentage of file compression and fill in table_1. The compression percentage is determined by the formula , where S is the size of the archive files, So is the size of the source files.

Table 1

Archivers Source files size
winzip winrar
Text files: 1. Document1.doc
2. Document2.doc
3.Document3.doc
Graphic files: 1. Winter.jpg
2. Rowan.bmp
Text information compression percentage (for all files)
Graphic information compression percentage (for all files)

Task number 4

Answer the control questions for the practical task

Task number 5

1. Make a conclusion about the completed practical task.

2. Submit a report to the teacher.

test questions

1. What is called archiving?

2. What is archiving for?

3. What file is called archive?

4. What is called unzipping?

5. What information is stored in the table of contents of an archive file?

6. What functionality do archivers have?

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