(Choose all that apply.)
A. Allocating memory for use by programs
B. Allocating CPU time for use by programs
C. Creating menus in GUI programs
D. Controlling access to hard disks
E. Enabling programs to use the network
2. Which of the following is an example of an embedded OS?
A. Android
B. CentOS
C. Fedora
D. Mint
E. Red Hat
3. Which of the following is a notable difference between Linux and macOS?
A. Linux can run common GNU programs, whereas macOS cannot.
B. Linux’s GUI is based on the X Window System, whereas
macOS is not.
C. Linux cannot run on Apple Macintosh hardware, whereas
macOS can run only on Apple hardware.
D. Linux relies heavily on BSD software, whereas macOS
uses no BSD software.
E. Linux supports textmode commands, whereas macOS is
a GUI-only OS.
4. Where did the Linux kernel come from?
A. It was derived from Microsoft Windows.
B. It was derived from Apple macOS.
C. It was derived from AT&T Unix.
D. It was derived from BSD Unix.
E. It was created by Linus Torvalds.
5. If you log into a Linux system in graphical mode, you cannot use text-mode commands in that session.
True or false:
6. CentOS is a Linux distribution with a long release cycle.
True or false:
7. A Linux text-mode login prompt reads ________.
A. login:
B. welcome:
C. Enter:
D. userid:
E. Enter your userid:
8. A common security problem with Windows that’s essentially nonexistent on Linux is ________.
A. Commercial software
B. Network firewalls
C. Network routers
D. Viruses
E. Software management packages
9. Pre-release software that’s likely to contain bugs is known as ________ and ________.
A. First and second
B. Primary and secondary
C. Alpha and beta
D. Development and
production
E. Development and test
10. Linux distributions that have no version number but instead release upgrades in an ongoing manner are said to have a(n) ________ release.
A. rolling
B. staggered
C. informal
D. systematic
E. hap-hazard
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Answers
1. A, B, D, and E.
The kernel manages the memory, CPU, and devices for programs
running on a computer system, so options A, B, D, and E are correct. The
kernel does
not manage features of the GUI desktop environment, so
option C is incorrect.
2. A.
The Android OS is used on phones as an embedded Linux system, so option A is correct.
The CentOS, Fedora, Mint, and Red Hat Linux distributions
are full Linux distributions intended for desktop and server environments,
and they are not used in embedded systems, making options B, C, D, and
E incorrect.
3. B.
Linux’s GUI is based on the X Window System.
Although macOS provides an X implementation, its primary GUI is Apple’s proprietary product. Thus, option B is correct.
Option A is incorrect because both Linux and macOS can run most GNU programs.
Option C is incorrect because Linux can run on both Apple Macintosh and Microsoft-compatible hardware.
Option D is incorrect because macOS includes many BSD
utilities. Although most Linux distributions use GNU utilities, you can
use BSD utilities in Linux if
you prefer.
Option E is incorrect because both Linux and macOS support
text-mode commands, although in macOS you must use the GUI Terminal application.
4. E.
The Linux OS was created by Linus Torvalds while he was a student. Although based on current Linux OSs, it wasn’t derived from any of them, so option E is correct, and options C and D are incorrect.
The Linux OS is not derived from either macOS or Windows,
so options A and B are also incorrect.
5. False.
Programs known as terminals enable entry of text-mode
commands after you’ve logged into Linux in GUI mode. You can also switch
between multiple
virtual terminals by using keystrokes such as Ctrl+Alt+F2.
6. True.
The CentOS distribution release cycle is approximately
every two years, which is long by the standards of other Linux distributions,
some of which have release cycles of just six months.
7. A.
The text-mode login prompt is a single text word that prompts you for your user account ID to access the Linux system.
The login term is used to prompt for the user to enter his or her userid, so Option A is correct.
Options B, C, D, and E are not used as login prompts for
the Linux.
8. D.
Most attackers who write viruses focus their energy on
the Windows platform where they can find the most victims, so there are
very few viruses
targeted toward Linux systems. Thus, Option D is correct.
Commercial software purchased from reputable vendors is not normally considered a security risk, so Option A is incorrect.
Linux systems installed on networks should still utilize network routers and firewalls to protect them from outside attacks, so Options B and C are incorrect.
Software management packages such as the Microsoft Store
are considered a security feature and not a problem, so Option E is correct.
9. C.
An alpha software release is the first test version of an application or distribution, which hasn’t been fully tested in all environments and most likely contains bugs.
The beta software release has been tested in some environments but not all, and it may contain bugs for your particular environments. Thus, Option C is correct.
The terms suggested in Options A, B, D, and E are not
used to represent standard first and second releases of software packages.
10. A.
A rolling release is provided as needed for a Linux distribution, with no specific release dates or version numbers. Thus, Option A is correct. The terms used in Options B, C, D, and E are not commonly used to indicate version types.
