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Vendor: CompTIA Exam Code: LX0-103 Exam Name: CompTIA Linux+ [Powered by LPI] 1 Version: 13.01 Q & As: 120

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QUESTION 1 Which file in the /proc filesystem lists parameters passed from the bootloader to the kernel?

(Specify the file name only without any path.)

Correct Answer: cmdline, /proc/cmdline

QUESTION 2 Which of the following options for the kernel's command line changes the systemd boot target to rescue.target instead of the default target?

A. B. C. D. E.

systemd.target=rescue.target systemd.runlevel=rescue.target systemd.service=rescue.target systemd.default=rescue.target systemd.unit=rescue.target

Correct Answer: E

QUESTION 3 Which of the following commands will write a message to the terminals of all logged in users?

A. B. C. D. E.

bcast mesg print wall yell

Correct Answer: D

QUESTION 4 Which of the following commands brings a system running SysV init into a state in which it is safe to perform maintenance tasks? (Choose TWO correct answers.)

A. B. C. D. E.

shutdown -R 1 now shutdown -single now init 1 telinit 1 runlevel 1

Correct Answer: CD

QUESTION 5 Which SysV init configuration file should be modified to disable the ctrl-alt-delete key combination?

A. B. C. D.

/etc/keys /proc/keys /etc/inittab /proc/inittab Guaranteed Success with EnsurePass VCE Software & PDF File

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E. /etc/reboot Correct Answer: C

QUESTION 6 What of the following statements are true regarding /dev/ when using udev? (Choose TWO correct answers.)

A. B. C. D. E.

Entries for all possible devices get created on boot even if those devices are not connected.

Additional rules for udev can be created by adding them to /etc/udev/rules.d/.

When using udev, it is not possible to create block or character devices in /dev/ using mknod.

The /dev/ directory is a filesystem of type tmpfs and is mounted by udev during system startup.

The content of /dev/ is stored in /etc/udev/dev and is restored during system startup.

Correct Answer: BD

QUESTION 7 What is the first program that is usually started, at boot time, by the Linux kernel when using SysV init?

A. B. C. D. E.

/lib/init.so /sbin/init /etc/rc.d/rcinit /proc/sys/kernel/init /boot/init

Correct Answer: B

QUESTION 8 Which of the following information is stored within the BIOS? (Choose TWO correct answers.)

A. B. C. D. E.

Boot device order Linux kernel version Timezone Hardware configuration The system's hostname

Correct Answer: AD

QUESTION 9 Which of the following statements is correct when talking about /proc/?

A. B. C. D.

All changes to files in /proc/ are stored in /etc/proc.d/ and restored on reboot.

All files within /proc/ are read-only and their contents cannot be changed.

All changes to files in /proc/ are immediately recognized by the kernel.

All files within /proc/ are only readable by the root user.

Correct Answer: C Guaranteed Success with EnsurePass VCE Software & PDF File

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QUESTION 10 Which of the following kernel parameters instructs the kernel to suppress most boot messages?

A. B. C. D.

silent verbose=0 nomesg quiet

Correct Answer: D

QUESTION 11 Which of the following are init systems used within Linux systems? (Choose THREE correct answers.)

A. B. C. D. E.

startd systemd Upstart SysInit SysV init

Correct Answer: BCE

QUESTION 12 What information can the lspci command display about the system hardware? (Choose THREE correct answers.)

A. B. C. D. E.

Device IRQ settings PCI bus speed System battery type Device vendor identification Ethernet MAC address

Correct Answer: ABD

QUESTION 13 During a system boot cycle, what program is executed after the BIOS completes its tasks?

A. B. C. D.

The bootloader The inetd program The init program The kernel

Correct Answer: A

QUESTION 14 Which command will display messages from the kernel that were output during the normal boot sequence?

Correct Answer: dmesg, /bin/dmesg Guaranteed Success with EnsurePass VCE Software & PDF File

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QUESTION 15 Which of the following commands reboots the system when using SysV init? (Choose TWO correct answers.)

A. B. C. D. E.

shutdown -r now shutdown -r "rebooting" telinit 6 telinit 0 shutdown -k now "rebooting"

Correct Answer: AC

QUESTION 16 Which run levels should never be declared as the default run level when using SysV init?

(Choose TWO correct answers.)

A. B. C. D. E.

0 1 3 5 6

Correct Answer: AE

QUESTION 17 What is the name of the main configuration file for GNU GRUB? (Specify the file name only without any path.)

Correct Answer: menu.lst, grub.conf, grub.cfg

QUESTION 18 Which Debian package management tool asks the configuration questions for a specific already installed package just as if the package were being installed for the first time? (Specify ONLY the command without any path or parameters.)

Correct Answer: dpkg-reconfigure

QUESTION 19 Which command will disable swapping on a device? (Specify ONLY the command without any path or parameters.)

Correct Answer: swapoff, /sbin/swapoff

QUESTION 20 In which directory must definition files be placed to add additional repositories to yum?

Correct Answer: /etc/yum.repos.d, /etc/yum.repos.d/, yum.repos.d, yum.repos.d/

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QUESTION 21 Which RPM command will output the name of the package which supplied the file /etc/exports?

A. B. C. D. E.

rpm -F /etc/exports rpm -qf /etc/exports rpm -Kl /etc/exports rpm -qp /etc/exports rpm -qi /etc/exports

Correct Answer: B

QUESTION 22 Which of the following is correct when talking about mount points?

A. B. C. D.

Every existing directory can be used as a mount point.

Only empty directories can be used as a mount point.

Directories need to have the SetUID flag set to be used as a mount point.

Files within a directory are deleted when the directory is used as a mount point.

Correct Answer: A

QUESTION 23 Which of the following commands is used to update the list of available packages when using dpkg based package management?

A. B. C. D. E.

apt-get update apt-get upgrade apt-cache update apt-get refresh apt-cache upgrade

Correct Answer: A

QUESTION 24 After modifying GNU GRUB's configuration file, which command must be run for the changes to take effect?

A. B. C. D.

kill -HUP $(pidof grub) grub-install grub No action is required

Correct Answer: D

QUESTION 25 What can the Logical Volume Manager (LVM) be used for? (Choose THREE correct answers.)

A. To create RAID 9 arrays.

B. To dynamically change the size of logical volumes.

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C. To encrypt logical volumes.

D. To create snapshots.

E. To dynamically create or delete logical volumes.

Correct Answer: BDE

QUESTION 26 Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?

A. B. C. D.

dd if=/dev/zero of=/dev/sda bs=512 dd if=/dev/zero of=/dev/sda bs=512 count=1 dd if=/dev/zero of=/dev/sda bs=440 count=1 dd if=/dev/zero of=/dev/sda bs=440

Correct Answer: C

QUESTION 27 Which of the following commands lists all currently installed packages when using RPM package management?

A. B. C. D.

yum --query --all yum --list --installed rpm --query --all rpm –list --installed

Correct Answer: C

QUESTION 28 When using rpm --verify to check files created during the installation of RPM packages, which of the following information is taken into consideration? (Choose THREE correct answers.)

A. B. C. D. E.

Timestamps MD5 checksums Inodes File sizes GnuPG signatures

Correct Answer: ABD

QUESTION 29 Which of the following options is used in a GRUB Legacy configuration file to define the amount of time that the GRUB menu will be shown to the user?

A. B. C. D.

hidemenu splash timeout showmenu Guaranteed Success with EnsurePass VCE Software & PDF File

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Correct Answer: C

QUESTION 30 Which file should be edited to select the network locations from which Debian installation package files are loaded?

A. B. C. D. E.

/etc/dpkg/dpkg.cfg /etc/apt/apt.conf /etc/apt/apt.conf.d /etc/apt/sources.list /etc/dpkg/dselect.cfg

Correct Answer: D

QUESTION 31 Which function key is used to start Safe Mode in Windows NT? A. B. C. D.

F10 F8 F6 Windows NT does not support Safe Mode

Correct Answer: D

QUESTION 32 Which of the following commands can be used to download the RPM package kernel without installing it?

A. B. C. D.

yum download --no-install kernel yumdownloader kernel rpm --download --package kernel rpmdownload kernel

Correct Answer: B

QUESTION 33 Which of the following environment variables overrides or extends the list of directories holding shared libraries?

A. B. C. D. E.

LD_LOAD_PATH LD_LIB_PATH LD_LIBRARY_PATH LD_SHARE_PATH LD_RUN_PATH

Correct Answer: C

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QUESTION 34 When removing a package, which of the following dpkg options will completely remove the files including configuration files?

A. B. C. D.

--clean --delete --purge --remove

Correct Answer: C

QUESTION 35 Which world-writable directory should be placed on a separate partition in order to prevent users from being able to fill up the / filesystem? (Specify the full path to the directory.)

Correct Answer: /tmp, tmp, /var/tmp, /tmp/, /var/tmp/

QUESTION 36 Which of the following commands lists the dependencies of a given dpkg package?

A. B. C. D.

apt-cache depends-on package apt-cache dependencies package apt-cache depends package apt-cache requires package

Correct Answer: C

QUESTION 37 Which of the following commands updates the linker cache of shared libraries?

A. B. C. D. E.

mkcache soconfig mkldconfig lddconfig ldconfig

Correct Answer: E

QUESTION 38 Which option to the yum command will update the entire system? (Specify ONLY the option name without any additional parameters.)

Correct Answer: update, upgrade

QUESTION 39 Which of the following are valid stream redirection operators within Bash? (Choose THREE correct answers.)

A. < Guaranteed Success with EnsurePass VCE Software & PDF File

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B. C. D. E.

<<< > >>> %>

Correct Answer: ABC

QUESTION 40 In Bash, inserting 1>&2 after a command redirects A. B. C. D. E.

standard error to standard input. standard input to standard error. standard output to standard error. standard error to standard output. standard output to standard input.

Correct Answer: C

QUESTION 41 Which of the following commands will print the last 10 lines of a text file to the standard output?

A. B. C. D.

cat -n 10 filename dump -n 10 filename head -n 10 filename tail -n 10 filename

Correct Answer: D

QUESTION 42 Which of the following commands is used to change options and positional parameters for a running Bash?

A. B. C. D. E.

history set bashconf setsh envsetup

Correct Answer: B

QUESTION 43 A user accidentally created the subdirectory \dir in his home directory. Which of the following commands will remove that directory?

A. B. C. D.

rmdir '~/\dir' rmdir "~/\dir" rmdir ~/'dir' rmdir ~/\dir Guaranteed Success with EnsurePass VCE Software & PDF File

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E. rmdir ~/\\dir Correct Answer: E

QUESTION 44 Which of the following commands replaces each occurrence of 'bob' in the file letter with 'Bob' and writes the result to the file newletter?

A. B. C. D. E.

sed '/bob/Bob' letter > newletter sed s/bob/Bob/ letter < newletter sed 's/bob/Bob' letter > newletter sed 's/bob/Bob/g' letter > newletter sed 's/bob, Bob/' letter > newletter

Correct Answer: D

QUESTION 45 Immediately after deleting 3 lines of text in vi and moving the cursor to a different line, which single character command will insert the deleted content below the current line?

A. B. C. D. E.

i (lowercase) P (uppercase) p (lowercase) U (uppercase) u (lowercase)

Correct Answer: C

QUESTION 46 Which of the following files, located in the user home directory, is used to store the Bash history?

A. B. C. D. E.

.bash_history .bash_histfile .history .bashrc_history .history_bash

Correct Answer: A

QUESTION 47 When given the following command line. echo "foo bar" | tee bar | cat Which of the following output is created?

A. cat B. foo bar C. tee bar Guaranteed Success with EnsurePass VCE Software & PDF File

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