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Question 1 of 20
1. Question
1 pointsCompression on a file works by:Correct
Incorrect
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Question 2 of 20
2. Question
1 pointsIn general, for which of the following would you want to use lossless compression?Correct
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Question 3 of 20
3. Question
1 pointsLossy compression: (choose three)Correct
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Question 4 of 20
4. Question
1 pointsYou type gzip myfile.tar. What happens? (choose two)Correct
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Question 5 of 20
5. Question
1 pointsHow would you obtain output similar to the following?compressed uncompressed ratio uncompressed_name 278168 1016950 72.6% tagsCorrect
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Question 6 of 20
6. Question
1 pointsWhich command would you use to archive the Documents directory and compress it with bzip2 compression?Correct
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Question 7 of 20
7. Question
1 pointsWhich flag would you pass to tar in order to have it make a new archive?Correct
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Question 8 of 20
8. Question
1 pointsWhich command will show what is inside the compressed tarball with a name of foo.tar.gz?Correct
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Question 9 of 20
9. Question
1 pointsIn the command tar –cvjf foo.tbz a b c, what are a, b, and c?Correct
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Question 10 of 20
10. Question
1 pointsGiven the command tar –cvjf homedirs.tbz /home, which of the following are true? (choose two)Correct
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Question 11 of 20
11. Question
1 pointsYou archived your users’ directories into a file called backup.tar.gz. You then view the archive and see the filenames follow this convention:home/username/somefile How will you extract just the files for the user called fred?Correct
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Question 12 of 20
12. Question
1 pointsWhich of the following commands will create a zipfile with the contents of your Documents directory?Correct
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Question 13 of 20
13. Question
1 pointsGiven a file called documents.zip, how can you see what’s in it without extracting the files?Correct
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Question 14 of 20
14. Question
1 pointsGiven a file called documents.zip, how can you extract just the files under ProjectX?Correct
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Question 15 of 20
15. Question
1 pointsYou try to compress a file that is already compressed. Which of the following statements is true?Correct
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Question 16 of 20
16. Question
1 pointsWhich of the following commands can be used to compress a file? (choose three)Correct
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Question 17 of 20
17. Question
1 pointsThe three main modes of tar are: (choose three)Correct
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Question 18 of 20
18. Question
1 pointsIn the command tar –czf foo.tar.gz bar, what is the purpose of the f flag?Correct
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Question 19 of 20
19. Question
1 pointsWhich two commands do the same thing? (choose two)Correct
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Question 20 of 20
20. Question
1 pointsThe _____ command is normally executed daily to update the database of all files that are on the system.Correct
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