XK0-006 System Management Practice Test 2 — 15 Questions

Question 1

A system administrator needs to install a package from a local RPM file without resolving dependencies automatically. Which command should be used?

Accepted Answer

rpm -i package.rpm. The `rpm -i package.rpm` command installs the specified RPM package without automatically resolving dependencies. The `-i` flag stands for 'install' and, unlike `-U` (upgrade) or higher-level tools like `yum` or `dnf`, it does not attempt to fetch or satisfy missing dependencies from configured repositories. This is the correct choice when the requirement is to install a local RPM file while explicitly avoiding automatic dependency resolution.

Answer

rpm -U package.rpm

Answer

yum localinstall package.rpm

Answer

dnf install ./package.rpm

Question 2

A Linux administrator needs to display the amount of disk space used by each mounted filesystem. Which two commands can be used? (Choose two.)

Accepted Answer

du -h /. The question asks for two commands that display the amount of disk space used by each mounted filesystem. Both df -h (option E) and du -h / (option A) serve this purpose. df -h shows disk space usage for all mounted filesystems in human-readable format. du -h / shows disk usage for the root directory, which is a mounted filesystem; while du is typically used for directory-level usage, the root directory corresponds to the root filesystem, so it effectively displays the disk space used by that filesystem. mount | column -t (option B) lists mount points and options, not space usage. lsblk (option C) lists block devices, not filesystem space. fdisk -l (option D) displays partition tables, not filesystem usage. Therefore, options A and E are correct.

Answer

mount | column -t

Answer

lsblk

Answer

fdisk -l

Question 3

An administrator wants to change the runlevel/target to a state where only a minimal set of processes is running, and network services are disabled. Which two systemd targets achieve this? (Choose two.)

Accepted Answer

rescue.target. (rescue.target) is correct because it boots the system into a single-user mode with a minimal set of processes and no network services, allowing administrative tasks like filesystem repairs. Option E (emergency.target) is correct because it starts an even more minimal environment with only a root shell on the console, also disabling network services. Both targets satisfy the requirement of minimal processes and disabled networking.

Answer

graphical.target

Answer

poweroff.target

Answer

multi-user.target

Question 4

A user wants to create a hard link to a file. Which three conditions must be true for a hard link to be created successfully? (Choose three.)

Accepted Answer

The source and link must be on the same filesystem.. Hard links cannot span filesystems, cannot link to directories (except by root with special options), and the target must exist. They share the same inode.

Answer

The source file must have the SUID bit set.

Answer

The link must have the same name as the source.

Question 5

A Linux administrator needs to view the last 10 lines of a log file named 'syslog'. Which command should be used?

Accepted Answer

tail -10 syslog. The 'tail' command outputs the last lines of a file; by default it shows 10 lines.

Answer

cat syslog

Answer

head -10 syslog

Answer

less syslog

Question 6

A technician notices a script fails to execute because the user does not have permission. The script currently has permissions 644. The technician needs to add execute permission for the owner only. Which command accomplishes this?

Accepted Answer

chmod u+x script.sh. The script currently has permissions 644, meaning the owner has read/write (6), group has read (4), and others have read (4). The requirement is to add execute permission for the owner only. The command `chmod u+x script.sh` adds (+) execute (x) permission to the user (u) — the owner — without affecting group or others. This is the precise and minimal command to achieve the goal.

Answer

chmod a+x script.sh

Answer

chmod 755 script.sh

Answer

chmod 744 script.sh

Question 7

An administrator wants to find all files in /var/log that have been modified within the last 2 days and have a .log extension. Which command should be used?

Accepted Answer

find /var/log -type f -mtime -2 -name "*.log". The find command with -mtime -2 finds files modified less than 2 days ago, and -name '*.log' matches the extension.

Answer

find /var/log -mtime 2 -name *.log

Answer

locate --mtime -2 *.log /var/log

Answer

ls -la /var/log | grep "\.log$" | head -20

Question 8

A system administrator wants to ensure a service starts automatically at boot and also starts immediately without rebooting. Which of the following systemctl commands or command combinations achieve both goals? (Choose all that apply.)

Accepted Answer

systemctl start service && systemctl enable service. Both options C and D are correct. Option C uses two commands: 'systemctl start service' to start immediately and 'systemctl enable service' to enable boot-time start. Option D uses a single command 'systemctl enable --now service' which simultaneously enables the service for boot and starts it immediately. Options A and B are incorrect because A enables but doesn't start immediately (unless restart is used, which assumes already running), and B starts immediately but doesn't enable for boot.

Answer

systemctl enable service && systemctl restart service

Answer

systemctl start --now service

Question 9

Which command displays the disk usage of files and directories in a human-readable format (e.g., KB, MB)?

Accepted Answer

du -h. The `du -h` command (disk usage with human-readable flag) recursively summarizes disk usage for files and directories, appending size suffixes like K, M, G for kilobytes, megabytes, and gigabytes. This directly matches the question's requirement to display disk usage in a human-readable format.

Answer

df -h

Answer

ls -lh

Answer

stat -h

Question 10

A user reports that they cannot access a file because permission is denied. The file's permissions are -rwsr-xr-x. What special permission is set?

Accepted Answer

SUID. The 's' in the owner execute position indicates SUID (Set User ID) is set.

Answer

No special permission

Answer

Sticky bit

Answer

SGID

Question 11

An administrator needs to replace all occurrences of 'oldhost' with 'newhost' in the file /etc/hosts. Which sed command should be used?

Accepted Answer

sed -i 's/oldhost/newhost/g' /etc/hosts. sed -i 's/oldhost/newhost/g' /etc/hosts performs an in-place substitution globally.

Answer

sed -e 's/oldhost/newhost/' /etc/hosts

Answer

sed -n 's/oldhost/newhost/gp' /etc/hosts

Answer

sed 's/oldhost/newhost/' /etc/hosts

Question 12

A Linux engineer is troubleshooting a boot issue. The system boots to a command-line interface but does not start the graphical interface. Which systemd target should be set as default to boot into a graphical environment?

Accepted Answer

graphical.target. graphical.target is the systemd target for a graphical user interface.

Answer

emergency.target

Answer

rescue.target

Answer

multi-user.target

Question 13

Which command is used to create a symbolic link named 'link' pointing to the file 'original'?

Accepted Answer

ln -s original link. ln -s creates a symbolic link.

Answer

symlink original link

Answer

ln -s link original

Answer

ln original link

Question 14

A technician needs to kill a process with PID 1234 that is not responding to normal termination. Which command sends SIGKILL?

Accepted Answer

kill -9 1234. kill -9 sends SIGKILL, which forcefully terminates the process.

Answer

kill 1234

Answer

kill -15 1234

Answer

kill -1 1234

Question 15

An administrator wants to list all files in the current directory that are larger than 1 MB. Which find commands are correct? (Choose two.)

Accepted Answer

find . -type f -size +1M. Both options A and D are syntactically correct and will produce the same result. The find command evaluates expressions in order, but the -type and -size conditions are independent; their order does not affect functionality. Option A (find . -type f -size +1M) specifies file type before size, while option D (find . -size +1M -type f) specifies size before file type. Both are valid because find processes predicates left-to-right, but since -type f filters by file type and -size +1M filters by size, any file that does not satisfy both will be excluded regardless of order.

Answer

find . -type f -size 1M

Answer

find . -type f -size +1MB