XK0-006 System Management Practice Test 9 — 15 Questions

Question 1

A technician needs to remove all files in /tmp that are owned by the user 'jdoe' and have not been accessed in 10 days. Which THREE commands or options would be part of a correct solution? (Select THREE.)

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

find /tmp -user jdoe -atime +10 -exec rm {} \;. find /tmp -user jdoe -atime +10 -delete finds files belonging to jdoe, with last access more than 10 days ago, and deletes them. -atime measures access time. -delete is a direct action. Alternatively, using -exec rm {} \; works. The correct components include the path, -user, -atime, and action.

Answer

find /tmp -user jdoe -delete

Answer

find /tmp -user jdoe -mtime +10

Question 2

A Linux administrator needs to view the contents of a compressed log file without decompressing it. Which command should be used?

Accepted Answer

zcat. zcat reads compressed files and outputs the contents to stdout without decompressing them to disk.

Answer

cat

Answer

bzcat

Answer

gunzip

Question 3

An administrator runs the command `ls -l file.txt` and sees the permissions `-rwsr-xr-x`. What special permission is set on this file?

Accepted Answer

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

Answer

SGID

Answer

Sticky bit

Answer

No special permission

Question 4

A system administrator wants to find all files in /var/log that have been modified in the last 7 days and are larger than 10MB, then delete them interactively. Which command accomplishes this?

Accepted Answer

find /var/log -mtime -7 -size +10M -ok rm {} \;. find with -mtime -7 (modified within 7 days) and -size +10M (larger than 10MB) and -ok rm {} \; (prompt before deletion) matches the requirement.

Answer

find /var/log -mtime -7 -size 10M -exec rm -i {} \;

Answer

find /var/log -mtime -7 -size +10M -delete

Answer

find /var/log -mtime +7 -size +10M -ok rm {} \;

Question 5

Which directory in the Filesystem Hierarchy Standard (FHS) contains variable data such as logs and spool files?

Accepted Answer

/var. /var is designated for variable data that changes frequently, such as logs, spool directories, and temporary files.

Answer

/opt

Answer

/etc

Answer

/tmp

Question 6

An administrator needs to give a user read and write access to a file without changing the file's group or adding the user to any group. Which method should be used?

Accepted Answer

setfacl -m u:username:rw file. Access Control Lists (ACLs) allow setting permissions for specific users beyond the traditional owner/group/others model, without changing group membership.

Answer

chown user: file

Answer

chmod u+rw file

Answer

chgrp to user's primary group

Question 7

A technician needs to replace all occurrences of '192.168.1.' with '10.0.0.' in the file /etc/network/interfaces and save the changes. Which command accomplishes this?

Accepted Answer

sed -i 's/192\.168\.1/10.0.0/g' /etc/network/interfaces. Uses `sed -i 's/192\.168\.1/10.0.0/g' /etc/network/interfaces`. The backslashes escape the dots, matching literal periods. The `-i` flag edits the file in-place. This replaces '192.168.1' (without the trailing dot) with '10.0.0', leaving the trailing dot intact, resulting in '10.0.0.' as required. Options A and C have unescaped dots, which match any character, making them imprecise. Option D also has unescaped dots and would incorrectly replace any character in place of the dots. Additionally, option C redirects to the same file, which can truncate it before reading completes.

Answer

awk '{gsub(/192.168.1./,"10.0.0.");print}' /etc/network/interfaces > tmp && mv tmp /etc/network/interfaces

Answer

sed 's/192.168.1./10.0.0./g' /etc/network/interfaces > /etc/network/interfaces

Answer

sed -i 's/192.168.1./10.0.0./g' /etc/network/interfaces

Question 8

A process is consuming excessive CPU and needs to be stopped immediately. The process ID is 4582. Which command should be used?

Accepted Answer

kill -9 4582. kill -9 sends SIGKILL, which forcefully terminates the process immediately.

Answer

kill -1 4582

Answer

kill -STOP 4582

Answer

kill -15 4582

Question 9

Which command displays real-time information about running processes, including CPU and memory usage, and updates the display dynamically?

Accepted Answer

top. top displays a dynamic real-time view of running processes and system resource usage.

Answer

htop

Answer

ps aux

Answer

jobs

Question 10

An administrator wants to ensure a service starts automatically at boot on a systemd-based system. Which command should be used?

Accepted Answer

systemctl enable service. systemctl enable sets the service to start automatically at boot.

Answer

systemctl start service

Answer

systemctl status service

Answer

systemctl reload service

Question 11

A technician needs to check which package provides the file /usr/bin/foo on a CentOS 8 system. Which command should be used?

Accepted Answer

rpm -qf /usr/bin/foo. On RPM-based systems, rpm -qf queries the package that owns a given file.

Answer

rpm -V /usr/bin/foo

Answer

rpm -qi /usr/bin/foo

Answer

rpm -ql /usr/bin/foo

Question 12

During boot, the system stops at a shell with limited functionality. The administrator suspects the root filesystem is corrupted. Which target should the system be booted into to perform recovery?

Accepted Answer

emergency.target. emergency.target provides a minimal environment with a single-user shell, suitable for filesystem repairs without starting other services.

Answer

rescue.target

Answer

multi-user.target

Answer

graphical.target

Question 13

Which command creates a symbolic link named 'link.txt' that points to 'original.txt'?

Accepted Answer

ln -s original.txt link.txt. ln -s target link_name creates a symbolic link.

Answer

symlink original.txt link.txt

Answer

ln original.txt link.txt

Answer

ln -s link.txt original.txt

Question 14

A technician needs to find all files in /home that have the SUID or SGID permission set. Which THREE commands can accomplish this? (Choose three.)

Accepted Answer

find /home -perm -4000 -o -perm -2000. find /home -perm /6000 matches files with either SUID (4000) or SGID (2000). -perm -4000 matches SUID only, -perm -2000 matches SGID only. The / notation matches any of the bits.

Answer

find /home -perm -6000

Answer

find /home -perm 6000

Question 15

An administrator wants to gather information about disk usage for a specific directory and its subdirectories. Which TWO commands can be used for this purpose? (Choose two.)

Accepted Answer

du -sh /path. du -sh /path gives a summary of total disk usage. du -h /path shows disk usage for each subdirectory in human-readable format. df shows filesystem-level usage, not directory-level.

Answer

df -h /path

Answer

ls -lh /path

Answer

stat /path