Sample questions for LPIC -101-400 part-1

LPIC-101 400-1

QUESTION 1
Which SysV init configuration file should be modified to disable the ctrl-alt-delete key combination?
A. /etc/keys
B. /proc/keys 
C. /etc/inittab 
D. /proc/inittab 
E. /etc/reboot

QUESTION 2
Which of the following information is stored within the BIOS? (Choose TWO correct answers.)
A. Boot device order
B. Linux kernel version
C. Timezone
D. Hardware configuration E. The system's hostname

QUESTION 3
Which of the following commands reboots the system when using SysV init? (Choose TWO correct answers.)
A. shutdown -r now
B. shutdown -r "rebooting"
C. telinit 6
D. telinit 0
E. shutdown -k now "rebooting"

QUESTION 4
Which of the following are init systems used within Linux systems? (Choose THREE correct answers.)
A. startd
B. systemd 
C. Upstart 
D. SysInit 
E. SysV init

QUESTION 5
SIMULATION
Which file in the /proc filesystem lists parameters passed from the bootloader to the kernel? (Specify the file name only without any path.)

QUESTION 6
What information can the lspci command display about the system hardware? (Choose THREE correct answers.)
A. Device IRQ settings
B. PCI bus speed
C. System battery type
D. Device vendor identification E. Ethernet MAC address

QUESTION 7
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. shutdown -R 1 now 
B. shutdown -single now 
C. init 1
D. telinit 1
E. runlevel 1


QUESTION 8
What is the first program that is usually started, at boot time, by the Linux kernel when using SysV init?
A. /lib/init.so
B. /sbin/init
C. /etc/rc.d/rcinit
D. /proc/sys/kernel/init 
E. /boot/init

QUESTION 9
SIMULATION
Which command will display messages from the kernel that were output during the normal boot sequence?


QUESTION 10
Which of the following commands will write a message to the terminals of all logged in users?
A. bcast 
B. mesg 
C. print 
D. wall 
E. yell

QUESTION 11
Which of the following kernel parameters instructs the kernel to suppress most boot messages?
A. silent
B. verbose=0 
C. nomesg 
D. quiet

QUESTION 12
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. systemd.target=rescue.target 
B. systemd.runlevel=rescue.target 
C. systemd.service=rescue.target 
D. systemd.default=rescue.target 
E. systemd.unit=rescue.target

QUESTION 13
After modifying GNU GRUB's configuration file, which command must be run for the changes to take effect?
A. kill -HUP $(pidof grub) 
B. grub-install
C. grub
D. No action is required

QUESTION 14
Which of the following commands is used to update the list of available packages when using dpkg based package management?
A. apt-get update
B. apt-get upgrade
C. apt-cache update 
D. apt-get refresh
E. apt-cache upgrade

QUESTION 15
Which of the following commands can be used to download the RPM package kernel without installing it?
A. yum download --no-install kernel 
B. yumdownloader kernel
C. rpm --download --package kernel
D. rpmdownload kernel


QUESTION 16
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. Timestamps
B. MD5 checksums 
C. Inodes
D. File sizes
E. GnuPG signatures

QUESTION 17
Which 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.

QUESTION 18
Which function key is used to start Safe Mode in Windows NT?
A. F10
B. F8
C. F6
D. Windows NT does not support Safe Mode

QUESTION 19
Which of the following environment variables overrides or extends the list of directories holding shared libraries?
A. LD_LOAD_PATH
B. LD_LIB_PATH
C. LD_LIBRARY_PATH 
D. LD_SHARE_PATH 
E. LD_RUN_PATH

QUESTION 20
SIMULATION
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.)

QUESTION 21
Which RPM command will output the name of the package which supplied the file /etc/exports?
A. rpm -F /etc/exports 
B. rpm -qf /etc/exports 
C. rpm -Kl /etc/exports 
D. rpm -qp /etc/exports 
E. rpm -qi /etc/exports

QUESTION 22
SIMULATION
In which directory must definition files be placed to add additional repositories to yum?

QUESTION 23
SIMULATION
What is the name of the main configuration file for GNU GRUB? (Specify the file name only without any path.)


QUESTION 24
When removing a package, which of the following dpkg options will completely remove the files including configuration files?
A. --clean 
B. --delete 
C. --purge 
D. remove


QUESTION 25
Which file should be edited to select the network locations from which Debian installation package files are loaded?
A. /etc/dpkg/dpkg.cfg 
B. /etc/apt/apt.conf
C. /etc/apt/apt.conf.d 
D. /etc/apt/sources.list 
E. /etc/dpkg/dselect.cfg


QUESTION 26
SIMULATION
Which option to the yum command will update the entire system? (Specify ONLY the option name without any additional parameters.)

QUESTION 27
SIMULATION
Which command will disable swapping on a device? (Specify ONLY the command without any path or parameters.)

QUESTION 28
SIMULATION
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.)

QUESTION 29
Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?
A. dd if=/dev/zero of=/dev/sda bs=512
B. dd if=/dev/zero of=/dev/sda bs=512 count=1 
C. dd if=/dev/zero of=/dev/sda bs=440 count=1
D. dd if=/dev/zero of=/dev/sda bs=440

QUESTION 30
Which of the following commands can be used to create a USB storage media from a disk image?
A. gdisk 
B. dd
C. cc
D. fdisk 
E. mount

QUESTION 31
In 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.


QUESTION 32
What command will generate a list of user names from /etc/passwd along with their login shell?
A. column -s : 1,7 /etc/passwd 
B. chop -c 1,7 /etc/passwd
C. colrm 1,7 /etc/passwd
D. cut -d: -f1,7 /etc/passwd

QUESTION 33
In a nested directory structure, which find command line option would be used to restrict the command to searching down a particular number of subdirectories?
A. -dirmax
B. -maxdepth 
C. -maxlevels 
D. -n
E. -s

QUESTION 34
Which 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 35
Which of the following commands kills the process with the PID 123 but allows the process to "clean up" before exiting?
A. kill -PIPE 123 
B. kill -KILL 123 
C. kill -STOP 123 
D. kill -TERM 123


QUESTION 36
SIMULATION
Which signal is missing from the following command that is commonly used to instruct a daemon to reinitialize itself, including reading configuration files?


QUESTION 37
What is the maximum niceness value that a regular user can assign to a process with the nice command when executing a new process?
A. 9 
B. 19 
C. 49 
D. 99


QUESTION 38
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. i (lowercase) 
B. P (uppercase) 
C. p (lowercase) 
D. U (uppercase) 
E. u (lowercase)


QUESTION 39
A user accidentally created the subdirectory \dir in his home directory. Which of the following commands will remove that directory?
A. rmdir '~/\dir' 
B. rmdir "~/\dir" 
C. rmdir ~/'dir' 
D. rmdir ~/\dir
E. rmdir ~/\\dir

QUESTION 40
In compliance with the FHS, in which of the directories are man pages found?

A. /usr/share/man 
B. /opt/man
C. /usr/doc/
D. /var/pkg/man 
E. /var/man

QUESTION 41
Which 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.log 
B. myapp 0>&1 | cat > file1.log 
C. myapp | cat > file1.log
D. myapp | tee file1.log
E. tee myapp file1.log



QUESTION 42
What 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 43
What is the output of the following command? echo "Hello World" | tr -d aieou
A. Hello World 
B. eoo
C. Hll Wrld
D. eoo Hll Wrld


QUESTION 44
Which of the following characters can be combined with a separator string in order to read from the current input source until the separator string, which is on a separate line and without any trailing spaces, is reached?
A. << 
B. <| 
C. !< 
D. &<

QUESTION 45
Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt?
A. file /tmp/myfile.txt
B. echo "Hello" >/tmp/myfile.txt
C. sed -ie "s/1/2/" /tmp/myfile.txt
D. echo -n "Hello" >>/tmp/myfile.txt 
E. touch /tmp/myfile.txt

QUESTION 46
What is the default nice level when a process is started using the nice command?
A. -10 
B. 10 
C. 20 
D. 0


QUESTION 47
What 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 48
What 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) switches modes 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 49
SIMULATION
Which command displays a list of all background tasks running in the current shell? (Specify ONLY the command without any path or parameters.)


QUESTION 50
Which of the following commands moves and resumes in the background the last stopped shell job?
A. run 
B. bg
C. fg 
D. back


QUESTION 51
What 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 52
What 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 53
In the vi editor, how can commands such as moving the cursor or copying lines into the buffer be issued multiple 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 54
Which of the following files, located in the user home directory, is used to store the Bash history?
A. .bash_history 
B. .bash_histfile 
C. .history
D. .bashrc_history 
E. .history_bash


QUESTION 55
SIMULATION
Which Bash environment variable defines in which file the user history is stored when exiting a Bash process? (Specify ONLY the variable name.)


QUESTION 56
Which of the following commands displays the contents of a gzip compressed tar archive?
A. gzip archive.tgz | tar xvf - 
B. tar ztf archive.tgz
C. gzip -d archive.tgz | tar tvf - 
D. tar cf archive.tgz

QUESTION 57
Which grep command will print only the lines that do not end with a / in the file foo?
A. grep '/$' foo 
B. grep '/#' foo 
C. grep -v '/$' foo 
D. grep -v '/#' foo

QUESTION 58
Which of the following commands is used to change options and positional parameters for a running Bash?
A. history 
B. set
C. bashconf 
D. setsh
E. envsetup



QUESTION 59
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. sed '/bob/Bob' letter > newletter
B. sed s/bob/Bob/ letter < newletter 
C. sed 's/bob/Bob' letter > newletter
D. sed 's/bob/Bob/g' letter > newletter 
E. sed 's/bob, Bob/' letter > newletter

QUESTION 60
From 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.sh
C. /bin/bash /usr/local/bin/runme.sh 
D. /usr/local/bin/runme.sh
E. run /usr/local/bin/runme.sh

QUESTION 61
Regarding 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 62
Which shell command is used to continue background execution of a suspended command?
A. &
B. bg 
C. cont 
D. exec 
E. :&

QUESTION 63
Which of the following shell redirections will write standard output and standard error output to a file named filename?

A. 2>&1 >filename 
B. >filename 2>&1 
C. 1>&2>filename 
D. >>filename
E. 1&2>filename

QUESTION 64
In the vi editor, which of the following commands will copy the current line into the vi buffer?
A. c 
B. cc 
C. 1c 
D. yy 
E. 1y



QUESTION 65
Which of the following sequences in the vi editor saves the opened document and exits the editor? (Choose TWO correct answers.)
A. esc ZZ 
B. ctrl :w! 
C. esc zz 
D. esc :wq! 
E. ctrl XX

QUESTION 66
When starting a program with the nice command without any additional parameters, which nice level is set for the resulting process?
A. -10 
B. 0 
C. 10 
D. 20


QUESTION 67
Which of the following commands will reduce all consecutive spaces down to a single space?
A. tr '\s' ' ' < a.txt > b.txt 
B. tr -c ' ' < a.txt > b.txt
C. tr -d ' ' < a.txt > b.txt 
D. tr -r ' ' '\n' < a.txt > b.txt 
E. tr -s ' ' < a.txt > b.txt


QUESTION 68
Which character, added to the end of a command, runs that command in the background as a child process of the current shell?
A. ! 
B. + 
C. & 
D. % 
E. #

QUESTION 69
Which of the following commands will print the last 10 lines of a text file to the standard output?
A. cat -n 10 filename 
B. dump -n 10 filename 
C. head -n 10 filename 
D. tail -n 10 filename

QUESTION 70
Which of the following commands prints a list of usernames (first column) and their primary group (fourth column) from the /etc/passwd file?
A. fmt -f 1,4 /etc/passwd
B. split -c 1,4 /etc/passwd 
C. cut -d : -f 1,4 /etc/passwd 
D. paste -f 1,4 /etc/passwd


QUESTION 71
Which of the following signals is sent to a process when the key combination CTRL+C is pressed on the keyboard?
A. SIGTERM 
B. SIGINT 
C. SIGSTOP 
D. SIGKILL


QUESTION 72
What happens after issuing the command vi without any additional parameters?
A. vi starts and loads the last file used and moves the cursor to the position where vi was when it last exited. B. vi starts and requires the user to explicitly either create a new or load an existing file.
C. vi exits with an error message as it cannot be invoked without a file name to operate on.
D. vi starts in command mode and opens a new empty file.
E. vi starts and opens a new file which is filled with the content of the vi buffer if the buffer contains text.


QUESTION 73
Which of the following command sets the Bash variable named TEST with the content FOO?
A. set TEST="FOO" 
B. TEST = "FOO" 
C. var TEST="FOO" 
D. TEST="FOO"


QUESTION 74
Which variable defines the directories in which a Bash shell searches for executable commands?
A. BASHEXEC 
B. BASHRC 
C. PATH
D. EXECPATH 
E. PATHRC

QUESTION 75
Which of the following commands determines the type of a file by using a definition database file which contains information about all common file types?
A. magic 
B. type
C. file
D. pmagic 
E. hash


QUESTION 76
SIMULATION
Which command is used in a Linux environment to create a new directory? (Specify ONLY the command without any path or parameters.)


QUESTION 77
Which of the following commands prints all files and directories within the /tmp directory or its subdirectories which are also owned by the user root? (Choose TWO correct answers.)
A. find /tmp -uid root -print 
B. find -path /tmp -uid root 
C. find /tmp -user root -print 
D. find /tmp -user root
E. find -path /tmp -user root print


QUESTION 78
When running the command
sed -e "s/a/b/" /tmp/file >/tmp/file
While /tmp/file contains data, why is /tmp/file empty afterwards?
A. The file order is incorrect. The destination file must be mentioned before the command to ensure redirection.
B. The command sed did not match anything in that file therefore the output is empty.
C. When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens it for reading. 
D. Redirection for shell commands do not work using the > character. It only works using the | character instead.

QUESTION 79
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 
D. bar
E. foo


QUESTION 80
Which of the following commands can be used to determine how long the system has been running? (Choose TWO correct answers.)
A. uptime
B. up
C. top
D. uname -u 
E. time up


QUESTION 81
Which of the following are valid stream redirection operators within Bash? (Choose THREE correct answers.)
A. < 
B. <<< 
C. > 
D. >>> 
E. %>

QUESTION 82
After 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.

QUESTION 83
After moving data to a new filesystem, how can the former path of the data be kept intact in order to avoid reconfiguration 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.

QUESTION 84
Which of the following commands changes the ownership of file.txt to the user dan and the group staff?
A. chown dan/staff file.txt
B. chown dan:staff file.txt
C. chown -u dan -g staff file.txt
D. chown dan -g staff file.txt


QUESTION 85
Which of the following commands makes /bin/foo executable by everyone but writable only by its owner?
A. chmod u=rwx,go=rx /bin/foo 
B. chmod o+rwx,a+rx /bin/foo 
C. chmod 577 /bin/foo
D. chmod 775 /bin/foo


QUESTION 86
Which of the following commands can be used to search for the executable file foo when it has been placed in a directory not included in $PATH?
A. apropos 
B. which 
C. find
D. query
E. whereis


QUESTION 87
What 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.

QUESTION 88
Which of the following settings for umask ensures that new files have the default permissions -rw-r----- ?
A. 0017
B. 0640
C. 0038
D. 0027

QUESTION 89
Which of the following is the device file name for the second partition on the only SCSI drive?
A. /dev/hda1 
B. /dev/sda2 
C. /dev/sd0a2 
D. /dev/sd1p2

QUESTION 90
In order to display all currently mounted filesystems, which of the following commands could be used? (Choose TWO correct answers.)
A. cat /proc/self/mounts 
B. free
C. mount
D. lsmounts
E. cat /proc/filesystems


QUESTION 91
Which of the following commands can be used to locate programs and their corresponding man pages and configuration files?
A. dirname 
B. which
C. basename 
D. query
E. whereis



QUESTION 92
Which of the following commands changes the number of days before the ext3 filesystem on /dev/sda1 has to run through a full filesystem check while booting?
A. tune2fs -d 200 /dev/sda1
B. tune2fs -c 200 /dev/sda1
C. tune2fs -i 200 /dev/sda1
D. tune2fs -n 200 /dev/sda1
E. tune2fs --days 200 /dev/sda1

QUESTION 93
Which type of filesystem is created by mkfs when it is executed with the block device name only and without any additional parameters?
A. ext2 
B. ext3 
C. ext4 
D. XFS 
E. VFAT

QUESTION 94
How many fields are in a syntactically correct line of /etc/fstab?
A. 3 
B. 4 
C. 5 
D. 6 
E. 7


QUESTION 95
SIMULATION
Which command is used to create and initialize the files used to store quota information? (Specify ONLY the command without any path or parameters.)


QUESTION 96
Which of the following file permissions belong to a symbolic link?
A. -rwxrwxrwx 
B. +rwxrwxrwx 
C. lrwxrwxrwx 
D. srwxrwxrwx

QUESTION 97
Creating a hard link to an ordinary file returns an error. What could be the reason for this?
A. The source file is hidden.
B. The source file is read-only.
C. The source file is a shell script.
D. The source file is already a hard link.
E. The source and the target are on different filesystems.

QUESTION 98
Which of the following commands creates an ext3 filesystem on /dev/sdb1? (Choose TWO correct answers.)
A. /sbin/mke2fs -j /dev/sdb1
B. /sbin/mkfs -t ext3 /dev/sdb1 
C. /sbin/mkfs -c ext3 /dev/sdb1 
D. /sbin/mke3fs -j /dev/sdb1

QUESTION 99
Which of the following commands will change the quota for a specific user? 
A. edquota
B. repquota 
C. quota -e
D. quota

QUESTION 100
Which utility would be used to change how often a filesystem check is performed on an ext2 filesystem without losing any data stored on that filesystem?
A. mod2fs 
B. fsck
C. tune2fs 
D. mke2fs 
E. fixe2fs

QUESTION 101
Which of the following Linux filesystems preallocates a fixed number of inodes at the filesystem's make/creation time and does NOT generate them as needed? (Choose TWO correct answers.)
A. ext3 
B. JFS 
C. ext2 
D. XFS 
E. procfs

QUESTION 102
What is the purpose of the Filesystem Hierarchy Standard?
A. It is a security model used to ensure files are organized according to their permissions and accessibility. 
B. It provides unified tools to create, maintain and manage multiple filesystems in a common way.
C. It defines a common internal structure of inodes for all compliant filesystems.
D. It is a distribution neutral description of locations of files and directories.


ANSWERS
1	Correct Answer: C
2	Correct Answer: AD
3	Correct Answer: AC
4	Correct Answer: BCE Section: System Architecture Explanation
5	Correct Answer: cmdline -or- /proc/cmdline
6	Correct Answer: ABD Section: System Architecture Explanation
7	Correct Answer: CD
8	Correct Answer: B
9	Correct Answer: dmesg -or- /bin/dmesg Section: System Architecture Explanation
10	Correct Answer: D
11	Correct Answer: D
12	Correct Answer: E
13	Correct Answer: D
14	Correct Answer: A
15	Correct Answer: B
16	Correct Answer: ABD
17	Correct Answer: A
18	Correct Answer: D
19	Correct Answer: C
20	Correct Answer: /tmp -or- tmp -or- /var/tmp -or- /tmp/ -or- /var/tmp/ Section: Linux Installation and Package Management Explanatio
21	Correct Answer: B
22	Correct Answer: /etc/yum.repos.d -or- /etc/yum.repos.d/ -or- yum.repos.d -or- yum.repos.d/
23	Correct Answer: menu.lst -or- grub.conf -or- grub.cfg Section: Linux Installation and Package Management Explanatio
24	Correct Answer: C
25	Correct Answer: D
26	Correct Answer: update -or- upgrade
27	Correct Answer: swapoff -or- /sbin/swapoff
28	Correct Answer: dpkg-reconfigure
29	Correct Answer: C
30	Correct Answer: B
31	Correct Answer: C
32	Correct Answer: D
33	Correct Answer: B
34	Correct Answer: B
35	Correct Answer: D
36	Correct Answer: HUP -or- SIGHUP -or- 1 Section: GNU and Unix Commands Explanation
37	Correct Answer: B
38	Correct Answer: C
39	Correct Answer: E
40	Correct Answer: A
41	Correct Answer: D
42	Correct Answer: D
43	Correct Answer: C
44	Correct Answer: A
45	Correct Answer: A
46	Correct Answer: B
47	Correct Answer: B
48	Correct Answer: B
49	Correct Answer: jobs
50	Correct Answer: B
51	Correct Answer: B
52	Correct Answer: C
53	Correct Answer: B
54	Correct Answer: A
55	Correct Answer: HISTFILE
56	Correct Answer: B
57	Correct Answer: C
58	Correct Answer: B
59	Correct Answer: D
60	Correct Answer: AB
61	Correct Answer: B
62	Correct Answer: B
63	Correct Answer: B
64	Correct Answer: D
65	Correct Answer: AD
66	Correct Answer: C
67	Correct Answer: E
68	Correct Answer: C
69	Correct Answer: D
70	Correct Answer: C
71	Correct Answer: B
72	Correct Answer: D
73	Correct Answer: D
74	Correct Answer: C
75	Correct Answer: C
76	Correct Answer: mkdir -or- /usr/bin/mkdir Section: GNU and Unix Commands Explanation
77	Correct Answer: CD
78	Correct Answer: C
79	Correct Answer: B
80	Correct Answer: AC
81	Correct Answer: ABC
82	Correct Answer: B
83	Correct Answer: CE
84	Correct Answer: B
85	Correct Answer: A
86	Correct Answer: C
87	Correct Answer: D
88	Correct Answer: D
89	Correct Answer: B
90	Correct Answer: AC
91	Correct Answer: E
92	Correct Answer: C
93	Correct Answer: A
94	Correct Answer: D
95	Correct Answer: quotacheck
96	Correct Answer: C
97	Correct Answer: E
98	Correct Answer: AB
99	Correct Answer: A
100	Correct Answer: C
101	Correct Answer: AC
102	Correct Answer: D

88 Correct Answer is B

39 correct answer is D.

88 Correct Answer is B

No, the correct answer is D. The umask code works in a complementary mode. Ex:

umask 022

666 - 022 = 644 (for files)
777 - 022 = 755 (for directories)

You're right, I didn't read that it was about umask.... .

39 correct answer is D.

No it is not. E is correct, because you need to escape the backslash. Otherwise you would create an escaped d (\d).
rmdir ~/\dir means:

• ~ home directory shorcut
• / is needed as separator from /home/user**/**
• \dir escape \ as character, otherwise it would be \d ir

Also possible

rmdir "$HOME/\dir"
rmdir $HOME/\\dir

Question 13 is not correct. Need to run either: grub2-mkconfig or update-grub command

Question 13 is not correct. Need to run either: grub2-mkconfig or update-grub command

@tibor76 I have asked ChatGPT and it give me following answer:

The right answer is D. No action is required.

Modifying the GRUB configuration file does not require any additional steps to take effect. The changes will be applied automatically on the next boot. There is no need to run any commands such as "grub-install" or "grub".

Also, this website has the same answer. I think that it's because he is talking about GRUB not GRUB2.

For anyone wondering question 20: https://www.tenable.com/audits/items/CIS_Red_Hat_EL8_Server_v2.0.0_L2.audit:b1fd091718dc3db756b5caceeaad6996

Question 5: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/deployment_guide/s2-proc-cmdline#:~:text=This%20file%20shows%20the%20parameters,the%20time%20it%20is%20started.

I asked question 44 to ChatGPT and this is what I got:

The correct character is "<<".

The "<<" operator in shell scripts is called the "Here Document" operator. It allows you to specify input for a 
command as the contents of a script until a specified string, the separator string, is encountered. The separator 
string can be any string and it specifies the end of the input to the command. The input is passed to the command 
verbatim, including any newlines, and can span multiple lines. The separator string must appear on a line by itself 
and without any trailing spaces.

Options B, C, and D are not valid shell script operators.

I created this question with chatgpt:

What is the role of the init process in a Linux system?

A. To manage the boot process
B. To manage system security
C. To manage all system processes
D. To manage system configuration files

Answer: C. To manage all system processes

88 Correct Answer is B

No, the correct answer is D. The umask code works in a complementary mode. Ex:

umask 022

666 - 022 = 644 (for files) 777 - 022 = 755 (for directories)

So isn't 0026 the right answer? Or I am not getting something xd

And i got this anwer from ChatGPT:
QUESTION 13
After modifying GNU GRUB's configuration file, which command must be run for the changes to take effect?
A. kill -HUP $(pidof grub)
B. grub-install
C. grub
D. No action is required

The correct answer is B. grub-install.

The "grub-install" command must be run after modifying the GNU GRUB configuration file for the changes to take effect. This command installs the boot loader on the boot sector of the disk and updates the configuration file to reflect the changes made.

The other options are not necessary for the changes to take effect. The "grub" command is used to start the GNU GRUB shell, which allows you to interactively enter commands and view the boot menu. The "kill -HUP $(pidof grub)" command would send a hang-up signal to the process with the PID of "grub", which would cause the process to reload its configuration file. However, this is not necessary after modifying the configuration file, as the "grub-install" command takes care of updating the configuration file and installing the boot loader.

The "No action is required" option is incorrect, as running "grub-install" after modifying the configuration file is necessary for the changes to take effect.

Question 18 has an issue

B. F8

Explanation:

In Windows NT, pressing the F8 key during the system boot process allows the user to access the Advanced Boot Options menu. From this menu, the user can choose various boot options, including starting the system in Safe Mode. Safe Mode is a diagnostic mode in Windows that loads a minimal set of drivers and services, which can be useful for troubleshooting and fixing system issues.

87 Correct Answer: D
this option is wrong

D. It ensures that all file systems listed with the option auto in /etc/fstab are mounted.

This is incorrect because the auto option in /etc/fstab means that the file system should be automatically mounted during system boot. Using mount -a doesn't consider the auto option.

the right answer is
E. It ensures that all file systems listed in /etc/fstab are mounted regardless of their options.

This is the correct explanation. mount -a reads /etc/fstab and mounts all listed file systems, applying their specified options.

i disagree
87 Correct Answer: D
it is the correct answere