CompTIA by Test-king - GRATIS EXAM · CompTIA by Test-king Number : LX0-103 Passing Score : 800 Time Limit : 120 min File Version : 14.0 Exam code: CompTIA LX0-103

CompTIA by Test-king

Number: LX0-103Passing Score: 800Time Limit: 120 minFile Version: 14.0

http://www.gratisexam.com/

Exam code: CompTIA LX0-103

Exam name: CompTIA Linux+ [Powered by LPI] Exam 1

Version 14.0

Sections1. System Architecture2. Linux Installation and Package Management3. GNU and Unix Commands4. Devices, Linux Filesystems, Filesystem Hierachy Standard

Exam A

QUESTION 1What of the following statements are true regarding /dev/ when using udev? (Choose TWO correctanswers.)

A. Entries for all possible devices get created on boot even if those devices are not connected.B. Additional rules for udev can be created by adding them to /etc/udev/rules.d/.C. When using udev, it is not possible to create block or character devices in /dev/ using mknod.D. The /dev/ directory is a filesystem of type tmpfs and is mounted by udev during system startup.E. The content of /dev/ is stored in /etc/udev/dev and is restored during system startup.

Correct Answer: BDSection: System ArchitectureExplanation

Explanation/Reference:

QUESTION 2Which of the following information is stored within the BIOS? (Choose TWO correct answers.)

A. Boot device orderB. Linux kernel versionC. TimezoneD. Hardware configurationE. The system's hostname

Correct Answer: ADSection: System ArchitectureExplanation


QUESTION 3Which of the following commands reboots the system when using SysV init? (Choose TWO correctanswers.)

A. shutdown -r nowB. shutdown -r "rebooting"C. telinit 6D. telinit 0E. shutdown -k now "rebooting"

Correct Answer: ACSection: System ArchitectureExplanation


QUESTION 4Which of the following are init systems used within Linux systems? (Choose THREE correct answers.)

A. startdB. systemdC. UpstartD. SysInit

E. SysV init

Correct Answer: BCESection: System ArchitectureExplanation


QUESTION 5What information can the lspci command display about the system hardware? (Choose THREE correctanswers.)


A. Device IRQ settingsB. PCI bus speedC. System battery typeD. Device vendor identificationE. Ethernet MAC address

Correct Answer: ABDSection: System ArchitectureExplanation


QUESTION 6Which of the following commands brings a system running SysV init into a state in which it is safe toperform maintenance tasks? (Choose TWO correct answers.)

A. shutdown -R 1 nowB. shutdown -single nowC. init 1D. telinit 1E. runlevel 1

Correct Answer: CDSection: System ArchitectureExplanation


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

A. /lib/init.soB. /sbin/initC. /etc/rc.d/rcinitD. /proc/sys/kernel/initE. /boot/init

Correct Answer: BSection: System ArchitectureExplanation


QUESTION 8Which of the following commands will write a message to the terminals of all logged in users?

A. bcastB. mesgC. printD. wallE. yell

Correct Answer: DSection: System ArchitectureExplanation


QUESTION 9Which of the following kernel parameters instructs the kernel to suppress most boot messages?

A. silentB. verbose=0C. nomesgD. quiet

Correct Answer: DSection: System ArchitectureExplanation


QUESTION 10Which of the following options for the kernel's command line changes the systemd boot target torescue.target instead of the default target?

A. systemd.target=rescue.targetB. systemd.runlevel=rescue.targetC. systemd.service=rescue.targetD. systemd.default=rescue.targetE. systemd.unit=rescue.target

Correct Answer: ESection: System ArchitectureExplanation


QUESTION 11After modifying GNU GRUB's configuration file, which command must be run for the changes to takeeffect?

A. kill -HUP $(pidof grub)B. grub-installC. grubD. No action is required

Correct Answer: DSection: Linux Installation and Package ManagementExplanation


QUESTION 12Which of the following commands is used to update the list of available packages when using dpkg basedpackage management?

A. apt-get updateB. apt-get upgradeC. apt-cache updateD. apt-get refreshE. apt-cache upgrade

Correct Answer: ASection: Linux Installation and Package ManagementExplanation


QUESTION 13Which of the following commands lists the dependencies of a given dpkg package?

A. apt-cache depends-on packageB. apt-cache dependencies packageC. apt-cache depends packageD. apt-cache requires package

Correct Answer: CSection: Linux Installation and Package ManagementExplanation


QUESTION 14Which of the following options is used in a GRUB Legacy configuration file to define the amount of time thatthe GRUB menu will be shown to the user?

A. hidemenuB. splashC. timeoutD. showmenu



QUESTION 15Which of the following commands can be used to download the RPM package kernel without installing it?

A. yum download --no-install kernelB. yumdownloader kernelC. rpm --download --package kernelD. rpmdownload kernel

Correct Answer: BSection: Linux Installation and Package ManagementExplanation


QUESTION 16When using rpm --verify to check files created during the installation of RPM packages, which of thefollowing information is taken into consideration? (Choose THREE correct answers.)

A. TimestampsB. MD5 checksumsC. InodesD. File sizesE. GnuPG signatures

Correct Answer: ABDSection: Linux Installation and Package ManagementExplanation


QUESTION 17Which of the following is correct when talking about mount points?

A. Every existing directory can be used as a mount point.B. Only empty directories can be used as a mount point.C. Directories need to have the SetUID flag set to be used as a mount point.D. Files within a directory are deleted when the directory is used as a mount point.

Correct Answer: ASection: Linux Installation and Package ManagementExplanation


QUESTION 18Which function key is used to start Safe Mode in Windows NT?

A. F10B. F8C. F6D. Windows NT does not support Safe Mode



QUESTION 19Which of the following environment variables overrides or extends the list of directories holding sharedlibraries?

A. LD_LOAD_PATHB. LD_LIB_PATHC. LD_LIBRARY_PATHD. LD_SHARE_PATHE. LD_RUN_PATH



QUESTION 20Which RPM command will output the name of the package which supplied the file /etc/exports?

A. rpm -F /etc/exportsB. rpm -qf /etc/exportsC. rpm -Kl /etc/exportsD. rpm -qp /etc/exportsE. rpm -qi /etc/exports

Correct Answer: BSection: Linux Installation and Package ManagementExplanation


QUESTION 21When removing a package, which of the following dpkg options will completely remove the files includingconfiguration files?

A. --cleanB. --deleteC. --purgeD. remove



QUESTION 22Which file should be edited to select the network locations from which Debian installation package files areloaded?

A. /etc/dpkg/dpkg.cfgB. /etc/apt/apt.conf

C. /etc/apt/apt.conf.dD. /etc/apt/sources.listE. /etc/dpkg/dselect.cfg



QUESTION 23Which of the following commands overwrites the bootloader located on /dev/sda without overwriting thepartition table or any data following it?

A. dd if=/dev/zero of=/dev/sda bs=512B. dd if=/dev/zero of=/dev/sda bs=512 count=1C. dd if=/dev/zero of=/dev/sda bs=440 count=1D. dd if=/dev/zero of=/dev/sda bs=440



QUESTION 24Which of the following commands can be used to create a USB storage media from a disk image?

A. gdiskB. ddC. ccD. fdiskE. mount

Correct Answer: BSection: GNU and Unix CommandsExplanation


QUESTION 25In Bash, inserting 1>&2 after a command redirects

A. standard error to standard input.B. standard input to standard error.C. standard output to standard error.D. standard error to standard output.E. standard output to standard input.

Correct Answer: CSection: GNU and Unix CommandsExplanation


QUESTION 26What command will generate a list of user names from /etc/passwd along with their login shell?

A. column -s : 1,7 /etc/passwdB. chop -c 1,7 /etc/passwdC. colrm 1,7 /etc/passwdD. cut -d: -f1,7 /etc/passwd

Correct Answer: DSection: GNU and Unix CommandsExplanation


QUESTION 27In a nested directory structure, which find command line option would be used to restrict the command tosearching down a particular number of subdirectories?

A. -dirmaxB. -maxdepthC. -maxlevelsD. -nE. -s



QUESTION 28Which of the following statements is correct regarding the command foo 1> bar?

A. The stdout from the command foo is appended to the file bar.B. The stdout from the command foo overwrites the file bar.C. The command foo receives its stdin from the file bar.D. The command foo receives its stdin from the stdout of the command bar.E. The stderr from the command foo is saved to the file bar.



QUESTION 29Which of the following commands kills the process with the PID 123 but allows the process to "clean up"before exiting?

A. kill -PIPE 123B. kill -KILL 123C. kill -STOP 123D. kill -TERM 123

Correct Answer: DSection: GNU and Unix Commands

Explanation


QUESTION 30What is the maximum niceness value that a regular user can assign to a process with the nice commandwhen executing a new process?


A. 9B. 19C. 49D. 99



QUESTION 31Immediately after deleting 3 lines of text in vi and moving the cursor to a different line, which singlecharacter command will insert the deleted content below the current line?

A. i (lowercase)B. P (uppercase)C. p (lowercase)D. U (uppercase)E. u (lowercase)



QUESTION 32A user accidentally created the subdirectory \dir in his home directory. Which of the following commandswill remove that directory?

A. rmdir '~/\dir'B. rmdir "~/\dir"C. rmdir ~/'dir'D. rmdir ~/\dirE. rmdir ~/\\dir

Correct Answer: ESection: GNU and Unix CommandsExplanation


QUESTION 33In compliance with the FHS, in which of the directories are man pages found?

A. /usr/share/manB. /opt/manC. /usr/doc/D. /var/pkg/manE. /var/man

Correct Answer: ASection: GNU and Unix CommandsExplanation


QUESTION 34Which of the following commands will send output from the program myapp to both standard output(stdout) and the file file1.log?

A. cat < myapp | cat > file1.logB. myapp 0>&1 | cat > file1.logC. myapp | cat > file1.logD. myapp | tee file1.logE. tee myapp file1.log



QUESTION 35What is the purpose of the Bash built-in export command?

A. It allows disks to be mounted remotely.B. It runs a command as a process in a subshell.C. It makes the command history available to subshells.D. It sets up environment variables for applications.E. It shares NFS partitions for use by other systems on the network.



QUESTION 36What is the output of the following command?

echo "Hello World" | tr -d aieou

A. Hello World

B. eooC. Hll WrldD. eoo Hll Wrld



QUESTION 37Which of the following characters can be combined with a separator string in order to read from the currentinput source until the separator string, which is on a separate line and without any trailing spaces, isreached?

A. <<B. <|C. !<D. &<



QUESTION 38Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt?

A. file /tmp/myfile.txtB. echo "Hello" >/tmp/myfile.txtC. sed -ie "s/1/2/" /tmp/myfile.txtD. echo -n "Hello" >>/tmp/myfile.txtE. touch /tmp/myfile.txt



QUESTION 39What is the default nice level when a process is started using the nice command?

A. -10B. 10C. 20D. 0



QUESTION 40What is the default action of the split command on an input file?

A. It will break the file into new files of 1,024 byte pieces each.B. It will break the file into new files of 1,000 line pieces each.C. It will break the file into new files of 1,024 kilobyte pieces each.D. It will break the file into new files that are no more than 5% of the size of the original file.



QUESTION 41What is the difference between the i and a commands of the vi editor?

A. i (interactive) requires the user to explicitly switch between vi modes whereas a (automatic) switchesmodes automatically.

B. i (insert) inserts text before the current cursor position whereas a (append) inserts text after the cursor.C. i (independent rows) starts every new line at the first character whereas a (aligned rows) keeps the

indentation of the previous line.D. i (interrupt) temporarily suspends editing of a file to the background whereas a (abort) terminates

editing.



QUESTION 42Which of the following commands moves and resumes in the background the last stopped shell job?

A. runB. bgC. fgD. back



QUESTION 43What is the effect of the egrep command when the -v option is used?

A. It enables color to highlight matching parts.B. It only outputs non-matching lines.C. It shows the command's version information.D. It changes the output order showing the last matching line first.



QUESTION 44What does the ? symbol within regular expressions represent?

A. Match the preceding qualifier one or more times.B. Match the preceding qualifier zero or more times.C. Match the preceding qualifier zero or one times.D. Match a literal ? character.



QUESTION 45In the vi editor, how can commands such as moving the cursor or copying lines into the buffer be issuedmultiple times or applied to multiple rows?

A. By using the command :repeat followed by the number and the command.B. By specifying the number right in front of a command such as 4l or 2yj.C. By selecting all affected lines using the shift and cursor keys before applying the command.D. By issuing a command such as :set repetition=4 which repeats every subsequent command 4 times.



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

A. .bash_historyB. .bash_histfileC. .historyD. .bashrc_historyE. .history_bash



QUESTION 47Which of the following commands displays the contents of a gzip compressed tar archive?

A. gzip archive.tgz | tar xvf -B. tar ztf archive.tgzC. gzip -d archive.tgz | tar tvf -D. tar cf archive.tgz



QUESTION 48Which grep command will print only the lines that do not end with a / in the file foo?

A. grep '/$' fooB. grep '/#' fooC. grep -v '/$' fooD. grep -v '/#' foo



QUESTION 49Which of the following commands is used to change options and positional parameters for a running Bash?

A. historyB. setC. bashconfD. setshE. envsetup



QUESTION 50Which of the following commands replaces each occurrence of 'bob' in the file letter with 'Bob' and writesthe result to the file newletter?

A. sed '/bob/Bob' letter > newletterB. sed s/bob/Bob/ letter < newletterC. sed 's/bob/Bob' letter > newletterD. sed 's/bob/Bob/g' letter > newletterE. sed 's/bob, Bob/' letter > newletter



QUESTION 51From a Bash shell, which of the following commands directly executes the instruction from the file /usr/local/bin/runme.sh without starting a subshell? (Please select TWO answers.)

A. source /usr/local/bin/runme.sh

B. . /usr/local/bin/runme.shC. /bin/bash /usr/local/bin/runme.shD. /usr/local/bin/runme.shE. run /usr/local/bin/runme.sh

Correct Answer: ABSection: GNU and Unix CommandsExplanation


QUESTION 52Regarding the command:nice -5 /usr/bin/prog

Which of the following statements is correct?

A. /usr/bin/prog is executed with a nice level of -5.B. /usr/bin/prog is executed with a nice level of 5.C. /usr/bin/prog is executed with a priority of -5.D. /usr/bin/prog is executed with a priority of 5.



QUESTION 53Which shell command is used to continue background execution of a suspended command?

A. &B. bgC. contD. execE. :&



QUESTION 54Which of the following shell redirections will write standard output and standard error output to a file namedfilename?

A. 2>&1 >filenameB. >filename 2>&1C. 1>&2>filenameD. >>filenameE. 1&2>filename



QUESTION 55In the vi editor, which of the following commands will copy the current line into the vi buffer?

A. cB. ccC. 1cD. yyE. 1y



QUESTION 56Which of the following sequences in the vi editor saves the opened document and exits the editor?(Choose TWO correct answers.)

A. esc ZZB. ctrl :w!C. esc zzD. esc :wq!E. ctrl XX

Correct Answer: ADSection: GNU and Unix CommandsExplanation


QUESTION 57When starting a program with the nice command without any additional parameters, which nice level is setfor the resulting process?

A. -10B. 0C. 10D. 20



QUESTION 58Which of the following commands will reduce all consecutive spaces down to a single space?

A. tr '\s' ' ' < a.txt > b.txtB. tr -c ' ' < a.txt > b.txtC. tr -d ' ' < a.txt > b.txt

D. tr -r ' ' '\n' < a.txt > b.txtE. tr -s ' ' < a.txt > b.txt

Correct Answer: ESection: GNU and Unix CommandsExplanation


QUESTION 59Which character, added to the end of a command, runs that command in the background as a childprocess of the current shell?

A. !B. +C. &


D. %E. #



QUESTION 60Which of the following commands will print the last 10 lines of a text file to the standard output?

A. cat -n 10 filenameB. dump -n 10 filenameC. head -n 10 filenameD. tail -n 10 filename



QUESTION 61Which of the following are valid stream redirection operators within Bash? (Choose THREE correctanswers.)

A. <B. <<<C. >D. >>>E. %>

Correct Answer: ABCSection: GNU and Unix CommandsExplanation

Explanation/Reference:Devices, Linux Filesystems, Filesystem Hierachy Standard Topic 4,

QUESTION 62After successfully creating a hard link called bar to the ordinary file foo, foo is deleted from the filesystem.Which of the following describes the resulting situation?

A. foo and bar would both be removed.B. foo would be removed while bar would remain accessible.C. foo would be removed. bar would still exist but would be unusable.D. Both foo and bar would remain accessible.E. The user is prompted whether bar should be removed, too.

Correct Answer: BSection: Devices, Linux Filesystems, Filesystem Hierachy StandardExplanation


QUESTION 63After moving data to a new filesystem, how can the former path of the data be kept intact in order to avoidreconfiguration of existing applications? (Choose TWO correct answers.)

A. By creating an ACL redirection from the old to the new path of the data.B. By creating a hard link from the old to the new path of the data.C. By creating a symbolic link from the old to the new path of the data.D. By running the command touch on the old path.E. By mounting the new filesystem on the original path of the data.

Correct Answer: CESection: Devices, Linux Filesystems, Filesystem Hierachy StandardExplanation


QUESTION 64Which of the following commands changes the ownership of file.txt to the user dan and the group staff?

A. chown dan/staff file.txtB. chown dan:staff file.txtC. chown -u dan -g staff file.txtD. chown dan -g staff file.txt



QUESTION 65Which of the following commands makes /bin/foo executable by everyone but writable only by its owner?

A. chmod u=rwx,go=rx /bin/fooB. chmod o+rwx,a+rx /bin/fooC. chmod 577 /bin/fooD. chmod 775 /bin/foo

Correct Answer: ASection: Devices, Linux Filesystems, Filesystem Hierachy StandardExplanation


QUESTION 66Which of the following commands can be used to search for the executable file foo when it has beenplaced in a directory not included in $PATH?

A. aproposB. whichC. findD. queryE. whereis

Correct Answer: CSection: Devices, Linux Filesystems, Filesystem Hierachy StandardExplanation


QUESTION 67What does the command mount -a do?

A. It ensures that all file systems listed with the option noauto in /etc/fstab are mounted.B. It shows all mounted file systems that have been automatically mounted.C. It opens an editor with root privileges and loads /etc/fstab for editing.D. It ensures that all file systems listed with the option auto in /etc/fstab are mounted.E. It ensures that all file systems listed in /etc/fstab are mounted regardless of their options.

Correct Answer: DSection: Devices, Linux Filesystems, Filesystem Hierachy StandardExplanation


QUESTION 68Which of the following settings for umask ensures that new files have the default permissions -rw-r----- ?

A. 0017B. 0640C. 0038D. 0027



QUESTION 69Which of the following is the device file name for the second partition on the only SCSI drive?

A. /dev/hda1B. /dev/sda2C. /dev/sd0a2D. /dev/sd1p2



QUESTION 70In order to display all currently mounted filesystems, which of the following commands could be used?(Choose TWO correct answers.)

A. cat /proc/self/mountsB. freeC. mountD. lsmountsE. cat /proc/filesystems

Correct Answer: ACSection: Devices, Linux Filesystems, Filesystem Hierachy StandardExplanation


QUESTION 71Which of the following commands changes the number of days before the ext3 filesystem on /dev/sda1has to run through a full filesystem check while booting?

A. tune2fs -d 200 /dev/sda1B. tune2fs -c 200 /dev/sda1C. tune2fs -i 200 /dev/sda1D. tune2fs -n 200 /dev/sda1E. tune2fs --days 200 /dev/sda1



QUESTION 72Which type of filesystem is created by mkfs when it is executed with the block device name only andwithout any additional parameters?

A. ext2B. ext3C. ext4D. XFSE. VFAT

Correct Answer: ASection: Devices, Linux Filesystems, Filesystem Hierachy StandardExplanation


QUESTION 73How many fields are in a syntactically correct line of /etc/fstab?

A. 3B. 4C. 5D. 6E. 7



QUESTION 74After running the command umount /mnt, the following error message is displayed:

umount: /mnt: device is busy.

What is a common reason for this message?

A. The kernel has not finished flushing disk writes to the mounted device.B. A user has a file open in the /mnt directory.C. Another file system still contains a symlink to a file inside /mnt.D. The files in /mnt have been scanned and added to the locate database.E. The kernel thinks that a process is about to open a file in /mnt for reading.



QUESTION 75What does the command mount -a do?

A. It mounts all available filesystems onto the current directory.B. It shows all mounted filesystems.C. It mounts all user mountable filesystems for the current user.D. It mounts all filesystems listed in /etc/fstab which have the option auto set.E. It mounts all filesystems listed in /etc/fstab which have the option noauto set.



QUESTION 76Which of the following commands set the sticky bit for the directory /tmp? (Choose TWO correct answers.)

A. chmod +s /tmpB. chmod +t /tmpC. chmod 1775 /tmpD. chmod 4775 /tmpE. chmod 2775 /tmp

Correct Answer: BCSection: Devices, Linux Filesystems, Filesystem Hierachy StandardExplanation


QUESTION 77Which of the following commands can be used to display the inode number of a given file?

A. inodeB. lsC. lnD. cp



QUESTION 78Which of the following commands shows the definition of a given shell command?

A. whereB. statC. typeD. case



QUESTION 79What do the permissions -rwSr-xr-x mean for a binary file when it is executed as a command?

A. The command is SetUID and it will be executed with the effective rights of the owner.B. The command will be executed with the effective rights of the group instead of the owner.C. The execute flag is not set for the owner. Therefore the SetUID flag is ignored.D. The command will be executed with the effective rights of the owner and group.



QUESTION 80Which of the following pieces of information of an existing file is changed when a hard link pointing to thatfile is created?

A. File sizeB. Modify timestampC. Link countD. Inode numberE. Permissions



QUESTION 81Which file in the /proc filesystem lists parameters passed from the bootloader to the kernel? (Specify thefile name only without any path.)

Correct Answer: Answer: cmdline, /proc/cmdlineSection: System ArchitectureExplanation


QUESTION 82Which command will display messages from the kernel that were output during the normal boot sequence?

Correct Answer: Answer: dmesg, /bin/dmesgSection: System ArchitectureExplanation


QUESTION 83Which world-writable directory should be placed on a separate partition in order to prevent users frombeing able to fill up the / filesystem? (Specify the full path to the directory.)

Correct Answer: Answer: /tmp, tmp, /var/tmp, /tmp/, /var/tmp/Section: Linux Installation and Package ManagementExplanation


QUESTION 84In which directory must definition files be placed to add additional repositories to yum?

Correct Answer: Answer: /etc/yum.repos.d, /etc/yum.repos.d/, yum.repos.d, yum.repos.d/Section: Linux Installation and Package ManagementExplanation


QUESTION 85

What is the name of the main configuration file for GNU GRUB? (Specify the file name only without anypath.)

Correct Answer: Answer: menu.lst, grub.conf, grub.cfgSection: Linux Installation and Package ManagementExplanation


QUESTION 86Which Debian package management tool asks the configuration questions for a specific already installedpackage just as if the package were being installed for the first time? (Specify ONLY the command withoutany path or parameters.)

Correct Answer: Answer: dpkg-reconfigureSection: Linux Installation and Package ManagementExplanation


QUESTION 87Which signal is missing from the following command that is commonly used to instruct a daemon toreinitialize itself, including reading configuration files?

killall -s _______ daemon

Correct Answer: Answer: HUP, SIGHUP, 1Section: GNU and Unix CommandsExplanation


QUESTION 88Which command displays a list of all background tasks running in the current shell? (Specify ONLY thecommand without any path or parameters.)

Correct Answer: Answer: jobsSection: GNU and Unix CommandsExplanation


QUESTION 89Which Bash environment variable defines in which file the user history is stored when exiting a Bashprocess? (Specify ONLY the variable name.)

Correct Answer: Answer: HISTFILESection: GNU and Unix CommandsExplanation


QUESTION 90Which command is used in a Linux environment to create a new directory? (Specify ONLY the commandwithout any path or parameters.)

Correct Answer: Answer: mkdir, /usr/bin/mkdir

Section: GNU and Unix CommandsExplanation



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CompTIA by Test-king - GRATIS EXAM · CompTIA by Test-king Number : LX0-103 Passing Score : 800 Time Limit : 120 min File Version : 14.0 Exam code: CompTIA LX0-103