Linux Essentials

Linux Essentials Midterm Exam Answer (Modules 1 – 8) 2016

1. To go to the end of an info page, press:

  • END
  • n
  • N
  • ]

2. To go to the next match of a search on a man page, press:

  • ]
  • n
  • N
  • }

3. When interpreting the SYNOPSIS of a command found on a man page, the “|” means:

  • The items it separates can be used together
  • The items it separates cannot be used together

4. After performing a search, you can use the ____ key to return to a previously found match:

  • n
  • N
  • D
  • U

5. To move a page forward one at a time while viewing a man page, press the following:

  • Spacebar
  • m
  • a
  • Enter

6. The ls command without options or arguments…

  • …lists the contents of the current directory.
  • …prompts for a directory to list.
  • …lists the contents of a user’s home directory.
  • …generates an error as this command requires arguments.

7. Which option can be used with the rm command to prompt before deleting?

  • I
  • -i
  • -P
  • A

8. The rm command can delete multiple files at once.. True or False?

  • True
  • False

9. Which of the following commands can be used to rename a file?

  • name
  • rn
  • mv
  • cp

10. The touch command can be used to:. (choose two)

  • Update the time stamp of existing files
  • Create new files
  • Change a file’s name
  • Change ownership of a file

11. You try to compress a file that is already compressed. Which of the following statements is true?

  • The file will not be compressed any further than it already was
  • The file changed while you were compressing it
  • The file will actually be uncompressed
  • The compression algorithm needs to be set to the “currently compressed” mode for it to be compressed further
  • The file will be deleted

12. Which of the following commands can be used to compress a file?. (choose three)

  • bunzip2
  • zip
  • bzip2
  • cat
  • gzip

13. The three main modes of tar are:. (choose three)

  • Extract
  • Copy
  • Compress
  • List
  • Create

14. In the command tar –czf foo.tar.gz bar, what is the purpose of the f flag?

  • Tells tar to copy only files, and not directories
  • Tells tar to read from the file that follows the flag
  • Tells tar to print the name of each file as it is processed
  • Specifies extra compression is to be used
  • Tells tar to write to the file that follows the flag

15. Which two commands do the same thing?. (choose two)

  • tar –xzf foo.tar.gz
  • tar –x foo | gzip
  • tar –c foo | gzip > foo.tar.gz
  • tar –tzf foo.tar.gz
  • tar –czf foo.tar.gz foo

16. Which option for the wc command will print the total number of words in a file?

  • -l
  • -L
  • -w
  • -C

17. Which command can be used to print line numbers?

  • num
  • ln
  • nl
  • sort

18. The command echo “text” > file.txt will create file.txt if it does not already exist.. True or False?

  • True
  • False

19. The command echo “text” > file.txt will not overwrite file.txt if it already exists.. True or False?

  • True
  • False

20. The command echo “text” >> file.txt will not overwrite file.txt if it already exists.. True or False?

  • True
  • False

21. Software is backward compatible if:

  • It still supports old file formats or applications
  • If the next version still works the same way
  • People still use old versions
  • It works across Linux/Mac/Windows
  • It can be upgraded without downtime

22. Apple’s OS X is:. (choose three)

  • Derived from Linux
  • Only compatible with Apple hardware
  • Able to natively run Windows binaries
  • Derived from FreeBSD
  • Certified as UNIX compatible
  • Primarily used to manage network services

23. Microsoft Windows:. (choose three)

  • Has a short maintenance cycle
  • Comes in desktop and server variants
  • Has built in virtualization
  • Has a new desktop version every year.
  • Has a Linux compatibility mode
  • Has powerful scripting capabilities

24. Other commercial Unixes:. (choose two)

  • Are almost obsolete
  • Are tied to their vendor’s hardware
  • Use completely different commands than Linux
  • Are UNIX certified
  • Do not run the GNU tools

25. When choosing a distribution of Linux, you should consider:. (choose five)

  • Which management tools are provided by the distribution
  • Which distributions are supported by the software you need to run
  • Popularity on social media.
  • The maintenance cycle of the distribution
  • If you need support on the distribution itself
  • Whether or not the distribution is under active development

26. The difference between the GPL and LGPL licenses are:

  • LGPL allows you to distribute the software in binary-only form
  • LGPL is shorter than GPL
  • LGPL allows linking to non GPLed software
  • LGPL applies to web services
  • LGPL was made by the OSI while GPL was made by the FSF

27. Permissive free software licenses:. (choose three)

  • Can allow software to be used inside closed source software
  • Are not approved by the OSI
  • Are not approved by the FSF
  • Include the GPLv2 and BSD
  • Don’t have a copyleft provision

28. The Creative Commons version of Public Domain licensing is:

  • Attribution-NonCommercial-ShareAlike
  • Attribution-NonCommercial
  • NoAttribution-ShareAlike
  • No Rights Reserved
  • Attribution

29. Your company makes a hardware firewall that runs a custom Linux kernel. What are your obligations under GPLv2?

  • There are no requirements
  • You must make the source to your custom web interface available
  • You must make your hardware designs available
  • You must make the source to your kernel available
  • You must ensure your custom kernel runs on a regular Intel machine

30. Participating in open source projects can improve your technical skills, even if it is not your day job.. True or False?

  • True
  • False

31. What are tradeoffs of increasing the level of privacy you have in your web browser?. (choose two)

  • You may get viruses
  • Sites may not work properly
  • Websites may load slower
  • Images won’t load properly
  • You may have to explicitly permit some cookies to be saved

32. Which of the following is a tool that helps you anonymize your Internet browsing?

  • CookieCleaner
  • Web proxy
  • The onion router
  • AnonFirefox
  • iptables

33. Social network “like” buttons can track your activity across the Internet.. True or False?

  • True
  • False

34. Which of the following are properties of a strong password?. (choose three)

  • A mix of upper and lower case
  • Long so that it can be reused on multiple sites
  • Includes symbols
  • At least 10 characters long
  • Based on easy to remember items like birthdays

35. What can be done to prevent remote people from running programs on your computer?. (choose two)

  • Don’t use wireless networks – only wired
  • Use strong passwords on all user accounts
  • Turn on a firewall
  • Block third party cookies
  • Block all cookies

36. The acronym CLI stands for:

  • Computer Link Interpreter
  • Command Line Interpreter
  • Computer Line Interface
  • Command Line Interface

37. Traditional UNIX command options used a single dash, like -a; _______ command options use two dashes like –all.

  • Kernel
  • GNU
  • shell

38. The acronym GNU stands for:

  • Gnu’s Not Unix
  • Go Next Unit
  • Gnu’s Nearly Unix
  • Good News Unix

39. What one character treats the character that follows it as if it was surrounded by single quotes?

  • /
  • %
  • #

40. The main purpose of using glob characters is to be able to provide a command a list of filenames.. True or False?

  • True
  • False

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