Programs are Linux File Managers (Answer Key)

Question 1 1 / 1 pts Which of the following programs are Linux file managers? (Select all that apply.) Correct! Thunar Correct! Dolphin Correct! GNOME Files Thunar is a file manager associated with Xfce, Dolphin is a file manager associated with KDE, and GNOME Files is a file manager associated with GNOME. Thus, options B, D, and E are all correct. Thunderbird is an email client, and Apache is a Web server program, so options A and C are both incorrect. Question 2 1 / 1 pts The programming language that provides a direct one-to-one correspondence between human-understandable symbols and machineunderstandable numbers is ________ language. Correct! orrect Answers assembly assembly Question 3 1 / 1 pts Which of the following programming languages is most often implemented as a compiled language? Correct! C++ Of these languages, only C++ is commonly implemented as a compiled language, so option D is correct. The remaining options are all commonly implemented as interpreted languages. Question 4 1 / 1 pts True or false: KDE Plasma is built atop the Qt widget set. Correct! True The K Desktop Environment (KDE) Plasma is built using the Qt GUI library (widget set), as the question specifies. Question 5 1 / 1 pts True or false: xinetd is a super server. Correct! True The term super server refers to a server that listens for connection attempts on behalf of other servers and that launches those other servers only as needed. The two most common super servers on Linux are inetd and xinetd. Question 6 True or false: All Linux web browsers are GUI programs. 1 / 1 pts Correct! False The Lynx web browser is text-mode; you can run it in a terminal window or from a text-mode login. Question 7 1 / 1 pts Which of the following two office suites are most closely related to one another? (Select two.) Correct! LibreOffice Correct! Apache OpenOffice LibreOffice is derived from Apache OpenOffice, so options A and E are correct. LyX is a way to create and edit LaTeX documents, but is not an office suite, so option B is an incorrect choice. Calligra is an independently-created office suite for Linux, while Microsoft Office is a commercial office suite primarily for Windows and Mac OS X. Thus, options C, and D are independent of each other and of LibreOffice and OpenOffice.org. Question 8 1 / 1 pts True or false: You can modify graphics files from the command line using Linux. Correct! True The ImageMagick suite of graphics programs is text-based; you can use it to convert file formats, add frames to images, resize images, and so on, all from the command line. Question 9 1 / 1 pts Which of the following are risks you take when you browse the Web as an ordinary user on a properly configured Linux system? (Select all that apply.) Correct! Data transferred to or from a web site can be intercepted, possibly exposing sensitive data to theft. Correct! A web site with malicious dynamic content could steal your personal data files. Most web sites are unencrypted, so data transferred from the site and your computer, or vice versa, can be intercepted, as option A suggests. (Most sites that transfer sensitive data employ encryption, but this isn’t universally true.) Some web sites deliver mini-programs that run on your computer, and if such a site delivers a malicious program, it could do just about anything, including steal your personal data files, as option B suggests. If you run the web browser as an ordinary user, though, such a malicious program could not create a new account, so option C is incorrect. While you may feel it is malicious to charge money to access a web site’s services, it is still legal and not considered a risk, so option D is incorrect. A Windows virus won’t run on Linux at all, much less harm your hardware, so option E is incorrect. Question 10 1 / 1 pts A _______ is a GUI program in which text-mode programs can be run. Correct! orrect Answers terminal Terminal Question 11 1 / 1 pts True or false: Pressing the up arrow key in Bash reveals commands you’ve recently typed. Correct! True The up arrow key enters previous commands from Bash’s history in your command line, which can be helpful when typing a series of similar commands. Question 12 1 / 1 pts To search all man pages’ Name sections for the keyword less, you would type ______________ less. Correct! orrect Answers whas whatis Question 13 1 / 1 pts True or false: info pages have largely replaced man pages as the most common form of documentation for Linux programs. Correct! False Although info was created to supplant man, the developer community as a whole has been slow to adopt the new format. Many programs continue to ship with man pages but without info pages. Question 14 1 / 1 pts How can you browse to a new node using the standard info documentation reader? Correct! Select a link using the arrow keys and then press the Enter key. The info documentation reader provides hyperlinks between documentation pages that you can traverse using the keyboard, as described in option B. The info reader doesn’t use typed letters (option A) or numbers (option D) to traverse links, so those options are both incorrect. The info reader is a text-mode program that is not mouse-enabled, so option C is incorrect. (The GUI tkinfo program, though, works in this way.) Because option B is correct, option E cannot be correct. Question 15 1 / 1 pts The ________ command searches a database of filenames for the name or name fragment that you specify. Correct! orrect Answers locate locate Question 16 1 / 1 pts True or false: To run a GUI program in Linux, you must launch it from a desktop environment’s menus. Correct! False You can launch GUI programs in several ways, including using a desktop environment’s menus or typing the program’s filename in a terminal program. Question 17 1 / 1 pts To view all your recent commands in the command history, type in the command __________. Correct! orrect Answers history history Question 18 1 / 1 pts Which of the following is a typical directory location for program documentation? Correct! /usr/share/doc/ Program documentation is often found in the /usr/share/doc/ directory (as well as the /usr/doc/ and /usr/share/doc/packages/directories). Thus, option A is correct. The /bin/ and /usr/local/bin/ directories are where programs are stored, and therefore options B and C are incorrect. Option D is a nonstandard Linux directory and is incorrect. The /sbin/ directory in option E is the location where programs for the superuser are typically stored and is therefore an incorrect choice. Question 19 1 / 1 pts What symbol do you place after a command to run the program in the background? Correct! & An ampersand (&), placed after a command typed in Bash, causes the command to run in the background, so option A is correct. The remaining options do not accomplish this task, although option C redirects standard output and option D creates a pipe to the following command on the same line. Option B is completely meaningless, as is option E in this context, although a hash mark (#) does serve as a comment character in Bash scripts. Question 20 Which of the following commands is equivalent to typing apropos keyword? 1 / 1 pts Correct! man -k keyword The apropos command searches the man page system, including both the Name and Description sections. The -k option to man does the same thing, so option D is correct. The find, less, and grep commands don’t search the man page system, so options A, B, and E are all incorrect. Option C is incorrect because although whatis searches the man page system, it does a less thorough search than apropos or man -k. Quiz Score: 20 out of 20