XK0-004 exam dumps

CompTIA XK0-004 Value Package

(Include: PDF + Desktop Test Engine + Online Test Engine)

  • Exam Code: XK0-004
  • Exam Name: CompTIA Linux+ Certification Exam
  • No. of Questions: 485 Questions and Answers
  • Updated: Sep 04, 2025

Instant Download: Upon successful payment, Our systems will automatically send the product you have purchased to your mailbox by email. (If not received within 12 hours, please contact us. Note: don't forget to check your spam.)

Download Demo

Custom purchase

Choosing Purchase: "Online Test Engine"
Price: $69.98 
  • Best exam practice material
  • Three formats are optional
  • 10 years of excellence
  • 365 Days Free Updates
  • Learn anywhere, anytime
  • 100% Safe shopping experience

100% Money Back Guarantee

PrepAwayTest has an unprecedented 99.6% first time pass rate among our customers. We're so confident of our products that we provide no hassle product exchange.

CompTIA Linux+ certification is a vendor-neutral certification that is recognized globally. CompTIA Linux+ Certification Exam certification is designed to validate the skills and knowledge of Linux administrators and is highly respected in the IT industry. The XK0-004 exam covers a broad range of topics, including system configuration, command-line interface, scripting, and security. XK0-004 exam is designed to test the candidate's ability to perform tasks that are commonly required of Linux administrators in the workplace.

Reference: https://certification.comptia.org/certifications/linux#overview

Protect your privacy

In order to meet the demand of all customers and protect your machines network security, our company can promise that our XK0-004 test training guide have adopted technological and other necessary measures to ensure the security of personal information they collect, and prevent information leaks, damage or loss. In addition, the XK0-004 preparation materials system from our company can help all customers ward off network intrusion and attacks prevent information leakage, protect user machines network security. If you choose our XK0-004 study questions as your study tool, we can promise that we will try our best to enhance the safety guarantees and keep your information from revealing, and your privacy will be protected well. You can rest assured to buy the XK0-004 preparation materials from our company.

24 hours full-time service

As is known to us, a good product is not only reflected in the strict management system, complete quality guarantee system but also the fine pre-sale and after-sale service system. In order to provide the best XK0-004 test training guide for all people, our company already established the integrate quality manage system, before sell serve and promise after sale. If you buy the XK0-004 preparation materials from our company, we can make sure that you will have the right to enjoy the 24 hours full-time online service. In order to help the customers solve the problem at any moment, our server staff will be online all the time.

CompTIA XK0-004 Exam Syllabus Topics:

TopicDetails

Hardware and System Configuration - 21%

Explain Linux boot process concepts.1.Boot loaders
  • GRUB
  • GRUB2

2.Boot options

  • UEFI/EFI
  • PXE
  • NFS
  • Boot from ISO
  • Boot from HTTP/FTP

2.File locations

  • /etc/default/grub
  • /etc/grub2.cfg
  • /boot
  • /boot/grub
  • /boot/grub2
  • /boot/ef

3.Boot modules and files

  • Commands
    mkinitrd
    dracut
    grub2-install
    grub2-mkconfig
  • initramfs
  • efi files
  • vmlinuz
  • vmlinux

4.Kernel panic

Given a scenario, install, configure, and monitor kernel modules.1.Commands
  • lsmod
  • insmod
  • modprobe
  • modinfo
  • dmesg
  • rmmod
  • depmod

2.Locations

  • /usr/lib/modules/[kernelversion]
  • /usr/lib/modules
  • /etc/modprobe.conf
  • /etc/modprobe.d/
Given a scenario, configure and verify network connection parameters.1.Diagnostic tools
  • ping
  • netstat
  • nslookup
  • dig
  • host
  • route
  • ip
  • ethtool
  • ss
  • iwconfig
  • nmcli
  • brctl
  • nmtui

2.Configuration files

  • /etc/sysconfig/network-scripts/
  • /etc/sysconfig/network
  • /etc/hosts
  • /etc/network
  • /etc/nsswitch.conf
  • /etc/resolv.conf
  • /etc/netplan
  • /etc/sysctl.conf
  • /etc/dhcp/dhclient.conf

3.Bonding

  • Aggregation
  • Active/passive
  • Load balancing
Given a scenario, manage storage in a Linux environment.1.Basic partitions
  • Raw devices
  • GPT
  • MBR

2.File system hierarchy

  • Real file systems
  • Virtual file systems
  • Relative paths
  • Absolute paths

3.Device mapper

  • LVM
  • mdadm
  • Multipath

4.Tools

  • XFS tools
  • LVM tools
  • EXT tools
  • Commands
    mdadm
    fdisk
    parted
    mkfs
    iostat
    df
    du
    mount
    umount
    lsblk
    blkid
    dumpe2fs
    resize2fs
    fsck
    tune2fs
    e2label

5.Location

  • /etc/fstab
  • /etc/crypttab
  • /dev/
  • /dev/mapper
  • /dev/disk/by-
    id
    uuid
    path
    multipath
  • /etc/mtab
  • /sys/block
  • /proc/partitions
  • /proc/mounts

6.File system types

  • ext3
  • ext4
  • xfs
  • nfs
  • smb
  • cifs
  • ntfs
Compare and contrast cloud and virtualization concepts and technologies.1.Templates
  • VM
  • OVA
  • OVF
  • JSON
  • YAML
  • Container images

2.Bootstrapping

  • Cloud-init
  • Anaconda
  • Kickstart

3.Storage

  • Thin vs. thick provisioning
  • Persistent volumes
  • Blob
  • Block

4.Network considerations

  • Bridging
  • Overlay networks
  • NAT
  • Local
  • Dual-homed

5.Types of hypervisors
6.Tools

  • libvirt
  • virsh
  • vmm
Given a scenario, configure localization options.1.File locations
  • /etc/timezone
  • /usr/share/zoneinfo

2.Commands

  • localectl
  • timedatectl
  • date
  • hwclock

3.Environment variables

  • LC_*
  • LC_ALL
  • LANG
  • TZ

4.Character sets

  • UTF-8
  • ASCII
  • Unicode

Systems Operation and Maintenance - 26%

Given a scenario, conduct software installations, configurations, updates, and removals.1.Package types
  • .rpm
  • .deb
  • .tar
  • .tgz
  • .gz

2.Installation tools

  • RPM
  • Dpkg
  • APT
  • YUM
  • DNF
  • Zypper

3.Build tools

  • Commands
    make
    make install
    ldd
  • Compilers
  • Shared libraries

4.Repositories

  • Configuration
  • Creation
  • Syncing
  • Locations

5.Acquisition commands

  • wget
  • curl
Given a scenario, manage users and groups.1.Creation
  • useradd
  • groupadd

2.Modification

  • usermod
  • groupmod
  • passwd
  • chage

3.Deletion

  • userdel
  • groupdel

4.Queries

  • id
  • whoami
  • who
  • w
  • last

5.Quotas

  • User quota
  • Group quota

6.Profiles

  • Bash parameters
    User entries
    - .bashrc
    - .bash_profile
    - .profile
  • Global entries
    /etc/bashrc
    /etc/profile.d/
    /etc/skel
    /etc/profile

7.Important files and file contents

  • /etc/passwd
  • /etc/group
  • /etc/shadow
Given a scenario, create, modify, and redirect files.1.Text editors
  • nano
  • vi

2.File readers

  • grep
  • cat
  • tail
  • head
  • less
  • more

3.Output redirection

  • <
  • >
  • |
  • <<
  • >>
  • 2>
  • &>
  • stdin
  • stdout
  • stderr
  • /dev/null
  • /dev/tty
  • xargs
  • tee
  • Here documents

4.Text processing

  • grep
  • tr
  • echo
  • sort
  • awk
  • sed
  • cut
  • printf
  • egrep
  • wc
  • paste

5.File and directory operations

  • touch
  • mv
  • cp
  • rm
  • scp
  • ls
  • rsync
  • mkdir
  • rmdir
  • ln
    Symbolic (soft)
    Hard
  • unlink
  • inodes
  • find
  • locate
  • grep
  • which
  • whereis
  • diff
  • updatedb
Given a scenario, manage services.1.Systemd management
  • Systemctl
    Enabled
    Disabled
    Start
    Stop
    Mask
    Restart
    Status
    Daemon-reload
  • Systemd-analyze blame
  • Unit files
    Directory locations
    Environment parameters
  • Targets
  • Hostnamectl
  • Automount

2.SysVinit

  • chkconfig
    on
    off
    level
  • Runlevels
    Definitions of 0–6
    /etc/init.d
    /etc/rc.d
    /etc/rc.local
    /etc/inittab
    Commands
    -runlevel
    -telinit
  • Service
    Restart
    Status
    Stop
    Start
    Reload
Summarize and explain server roles.1.NTP
2.SSH
3.Web
4.Certificate authority
5.Name server
6.DHCP
7.File servers
8.Authentication server
9.Proxy
10.Logging
11.Containers
12.VPN
13.Monitoring
14.Database
15.Print server
16.Mail server
17.Load balancer
18.Clustering
Given a scenario, automate and schedule jobs.1.cron
2.at
3.crontab
4.fg
5.bg
6.&
7.kill
8.Ctrl+c
9.Ctrl+z
10.nohup
Explain the use and operation of Linux devices.1.Types of devices
  • Client devices
  • Bluetooth
  • WiFi
  • USB
  • Monitors
  • GPIO
  • Network adapters
  • PCI
  • HBA
  • SATA
  • SCSI
  • Printers
  • Video
  • Audio

2.Monitoring and configuration tools

  • lsdev
  • lsusb
  • lspci
  • lsblk
  • dmesg
  • lpr
  • lpq
  • abrt
  • CUPS
  • udevadm
    add
    reload-rules
    control
    trigger

3.File locations

  • /proc
  • /sys
  • /dev
  • /dev/mapper
  • /etc/X11

4.Hot pluggable devices

  • /usr/lib/udev/rules.d (System rules - Lowest priority)
  • /run/udev/rules.d (Volatile Rules)
  • /etc/udev/rules.d (Local Administration - Highest priority)
  • /etc/udev/rules.d
Compare and contrast Linux graphical user interfaces.1.Servers
  • Wayland
  • X11

2.GUI

  • Gnome
  • Unity
  • Cinnamon
  • MATE
  • KDE

3.Remote desktop

  • VNC
  • XRDP
  • NX
  • Spice

4.Console redirection

  • SSH port forwarding
    Local
    Remote
    X11 forwarding
    VNC

5.Accessibility

Security - 19%

Given a scenario, apply or acquire the appropriate user and/or group permissions and ownership.1.File and directory permissions
  • Read, write, execute
  • User, group, other
  • SUID
  • Octal notation
  • umask
  • Sticky bit
  • SGID
  • Inheritance
  • Utilities
    chmod
    chown
    chgrp
    getfacl
    setfacl
    ls
    ulimit
    chage

2.Context-based permissions

  • SELinux configurations
    disabled
    permissive
    enforcing
  • SELinux policy
    targeted
  • SELinux tools
    setenforce
    getenforce
    sestatus
    setsebool
    getsebool
    chcon
    restorecon
    ls -Z
    ps -Z
  • AppArmor
    aa-disable
    aa-complain
    aa-unconfined
    /etc/apparmor.d/
    /etc/apparmor.d/tunables

3.Privilege escalation

  • su
  • sudo
  • wheel
  • visudo
  • sudoedit

4.User types

  • Root
  • Standard
  • Service
Given a scenario, configure and implement appropriate access and authentication methods.1.PAM
  • Password policies
  • LDAP integration
  • User lockouts
  • Required, optional, or sufficient
  • /etc/pam.d/
  • pam_tally2
  • faillock

2.SSH

  • ~/.ssh/
    known_hosts
    authorized_keys
    config
    id_rsa
    id_rsa.pub
  • User-specific access
  • TCP wrappers
  • /etc/ssh/
    ssh_config
    sshd_config
  • ssh-copy-id
  • ssh-keygen
  • ssh-add

3.TTYs

  • /etc/securetty
  • /dev/tty#

4.PTYs
5.PKI

  • Self-signed
  • Private keys
  • Public keys
  • Hashing
  • Digital signatures
  • Message digest

6.VPN as a client

  • SSL/TLS
  • Transport mode
  • Tunnel mode
  • IPSec
  • DTLS
Summarize security best practices in a Linux environment.1.Boot security
  • Boot loader password
  • UEFI/BIOS password

2.Additional authentication methods

  • Multifactor authentication
    Tokens
    -Hardware
    -Software
    OTP
    Biometrics
  • RADIUS
  • TACACS+
  • LDAP
  • Kerberos
    kinit
    klist

3.Importance of disabling root login via SSH
4.Password-less login

  • Enforce use of PKI

5.Chroot jail services
6. No shared IDs
7.Importance of denying hosts
8.Separation of OS data from application data

  • Disk partition to maximize system availability

9.Change default ports
10.Importance of disabling or uninstalling unused and unsecure services

  • FTP
  • Telnet
  • Finger
  • Sendmail
  • Postfix

11.Importance of enabling SSL/TLS
12.Importance of enabling auditd
13.CVE monitoring
14.Discouraging use of USB devices
15.Disk encryption

  • LUKS

16.Restrict cron access
17.Disable Ctrl+Alt+Del
18.Add banner
19.MOTD

Given a scenario, implement logging services.1.Key file locations
  • /var/log/secure
  • /var/log/messages
  • /var/log/[application]
  • /var/log/kern.log

2.Log management

  • Third-party agents
  • logrotate
  • /etc/rsyslog.conf
  • journald
    journalctl

3.lastb

Given a scenario, implement and configure Linux firewalls.1.Access control lists
  • Source
  • Destination
  • Ports
  • Protocol
  • Logging
  • Stateful vs. stateless
  • Accept
  • Reject
  • Drop
  • Log

2.Technologies

  • firewalld
    Zones
    Run time
  • iptables
    Persistency
    Chains
  • ufw
    /etc/default/ufw
    /etc/ufw/
  • Netfilter

3.IP forwarding

  • /proc/sys/net/ipv4/ip_forward
  • /proc/sys/net/ipv6/conf/all/forwarding

4.Dynamic rule sets

  • DenyHosts
  • Fail2ban
  • IPset

5.Common application firewall configurations

  • /etc/services
  • Privileged ports
Given a scenario, backup, restore, and compress files.1.Archive and restore utilities
  • tar
  • cpio
  • dd

2.Compression

  • gzip
  • xz
  • bzip2
  • zip

3.Backup types

  • Incremental
  • Full
  • Snapshot clones
  • Differential
  • Image

4.Off-site/off-system storage

  • SFTP
  • SCP
  • rsync

5.Integrity checks

  • MD5
  • SHA

Linux Troubleshooting and Diagnostics - 20%

Given a scenario, analyze system properties and remediate accordingly.1.Network monitoring and configuration
  • Latency
    Bandwidth
    Throughput
  • Routing
  • Saturation
  • Packet drop
  • Timeouts
  • Name resolution
  • Localhost vs. Unix socket
  • Adapters
    RDMA drivers
  • Interface configurations
  • Commands
    nmap
    netstat
    iftop
    route
    iperf
    tcpdump
    ipset
    Wireshark
    - tshark
    netcat
    traceroute
    mtr
    arp
    nslookup
    dig
    host
    whois
    ping
    nmcli
    ip
    tracepath

2.Storage monitoring and configuration

  • iostat
  • ioping
  • IO scheduling
    cfq
    noop
    deadline
  • du
  • df
  • LVM tools
  • fsck
  • partprobe

3.CPU monitoring and configuration

  • /proc/cpuinfo
  • uptime
  • loadaverage
  • sar
  • sysctl

4.Memory monitoring and configuration

  • swapon
  • swapoff
  • mkswap
  • vmstat
  • Out of memory killer
  • free
  • /proc/meminfo
  • Buffer cache output

5.Lost root password

  • Single user mode
Given a scenario, analyze system processes in order to optimize performance.1.Process management
  • Process states
    Zombie
    Uninterruptible sleep
    Interruptible sleep
    Running
  • Priorities
  • Kill signals
  • Commands
    nice
    renice
    top
    time
    ps
    lsof
    pgrep
    pkill
  • PIDs
Given a scenario, analyze and troubleshoot user issues.1.Permissions
  • File
  • Directory

2.Access

  • Local
  • Remote

3.Authentication

  • Local
  • External
  • Policy violations

4.File creation

  • Quotas
  • Storage
  • Inode exhaustion
  • Immutable files

5.Insufficient privileges for authorization

  • SELinux violations

6.Environment and shell issues

Given a scenario, analyze and troubleshoot application and hardware issues.1.SELinux context violations
2.Storage
  • Degraded storage
  • Missing devices
  • Missing volumes
  • Missing mount point
  • Performance issues
  • Resource exhaustion
  • Adapters
    SCSI
    RAID
    SATA
    HBA
    - /sys/class/scsi_host/host#/scan
  • Storage integrity
    Bad blocks

3.Firewall

  • Restrictive ACLs
  • Blocked ports
  • Blocked protocols

4.Permission

  • Ownership
  • Executables
  • Inheritance
  • Service accounts
  • Group memberships

5.Dependencies

  • Patching
  • Update issues
  • Versioning
  • Libraries
  • Environment variables
  • GCC compatibility
  • Repositories

6.Troubleshooting additional hardware issues

  • Memory
  • Printers
  • Video
    GPU drivers
  • Communications ports
  • USB
  • Keyboard mapping
  • Hardware or softwarecompatibility issues
  • Commands
    dmidecode
    lshw

Automation and Scripting - 14%

Given a scenario, deploy and execute basic BASH scripts.1.Shell environments and shell variables
  • PATH
  • Global
  • Local
  • export
  • env
  • set
  • printenv
  • echo

2.#!/bin/bash
3.Sourcing scripts
4.Directory and file permissions

  • chmod

5.Extensions
6.Commenting

  • #

7.File globbing
8.Shell expansions

  • ${}
  • $()
  • ` `

8.Redirection and piping
9.Exit codes

  • stderr
  • stdin
  • stdout

10.Metacharacters
11.Positional parameters
12.Looping constructs

  • while
  • for
  • until

13.Conditional statements

  • if
  • case

14.Escaping characters

Given a scenario, carry out version control using Git.1.Arguments
  • clone
  • push
  • pull
  • commit
  • merge
  • branch
  • log
  • init
  • config

2.Files

  • gitignore
  • .git/
Summarize orchestration processes and concepts.1.Agent
2.Agentless
3.Procedures
4.Attributes
5.Infrastructure automation
6.Infrastructure as code
7.Inventory
8.Automated configuration management
9.Build automation

It is a universally accepted fact that the XK0-004 exam is a tough nut to crack for the majority of candidates, but there are still a lot of people in this field who long to gain the related certification so that a lot of people want to try their best to meet the challenge of the XK0-004 exam. A growing number of people know that if they have the chance to pass the exam, they will change their present situation and get a more decent job in the near future. More and more people have realized that they need to try their best to prepare for the XK0-004 exam.

DOWNLOAD DEMO

Gain the newest information about the exam

It is known to us that the 21st century is an information era of rapid development. Now the people who have the opportunity to gain the newest information, who can top win profit maximization. In a similar way, people who want to pass XK0-004 exam also need to have a good command of the newest information about the coming exam. However, it is not easy for a lot of people to learn more about the information about the study materials. Luckily, the XK0-004 preparation materials from our company will help all people to have a good command of the newest information. Because our company have employed a lot of experts and professors to renew and update the XK0-004 test training guide for all customer in order to provide all customers with the newest information. If you also choose the XK0-004 study questions from our company, we can promise that you will have the chance to enjoy the newest information provided by our company.

1129 Customer ReviewsCustomers Feedback (* Some similar or old comments have been hidden.)

If you participate with this XK0-004 exam braindump and you will get high average to pass the exam. I got 97% marks with it. Thanks!

Aubrey

Aubrey     4.5 star  

It is my wise choice.Just passed this XK0-004 exam.

Aubrey

Aubrey     4.5 star  

The dump is helpful. With your CompTIA dump, I got my certification successfully last week! Thank u PrepAwayTest!

Noel

Noel     5 star  

I scored 94% on Aug 30, 2025.

Hannah

Hannah     4.5 star  

But it all changes when I met you PrepAwayTest.

Hunter

Hunter     5 star  

With your XK0-004 training materials I have passed this XK0-004 exam.

Enid

Enid     4.5 star  

I am a satisfied customer of PrepAwayTest, and happily giving a strong feedback to you. Passed Linux+ XK0-004 exam few hours back and impressed by this goods

Cliff

Cliff     5 star  

Very updated exam guide by PrepAwayTest for XK0-004 certification. Helped me secure 92% marks in the exam. Looking forward to using PrepAwayTest for other exams as well.

Howar

Howar     4 star  

XK0-004 exam dump has proven to be very helpful to me. I studied with it and passed the exam. Thanks to PrepAwayTest for the excellent service and high-quality XK0-004 exam dump!

Veromca

Veromca     5 star  

Thank you for the updated XK0-004 training material. I passed my XK0-004 exam with good score. You can do that too!

Mabel

Mabel     4.5 star  

Yes dude, i passed this exam after using XK0-004 practice test! And i passed it just in one go. Cool!

Kevin

Kevin     4.5 star  

Almost all the questions I had on my XK0-004 exam were in XK0-004 pracitice dump. I just passed my XK0-004 exam yesterday. So valid and helpful!

Moira

Moira     4.5 star  

Most questions are same with the real test, it is totally valid.

Natalie

Natalie     4.5 star  

Dumps for certified XK0-004 exam at PrepAwayTest are very similar to the actual exam. Great work team PrepAwayTest for this helping tool. Passed my exam today.

Leona

Leona     5 star  

Thanks so much for your XK0-004 practice questions.

Naomi

Naomi     4.5 star  

I am unable to put into words how magnificently these XK0-004 dumps have helped me pass my exam. Thanks a lot.

Valentina

Valentina     5 star  

Your questions and answers helped me a lot for grasping each and every topic for my XK0-004 exam.

Matt

Matt     5 star  

Guys, you can relay on the XK0-004 exam questions. I have passed, and I only studied for it at my spare time. You may do a better job if you study more. Good luck!

Ziv

Ziv     4 star  

I have gotten my XK0-004 certification with your help, and i have became one of your loyal fans. You are the best!

Len

Len     4.5 star  

LEAVE A REPLY

Your email address will not be published. Required fields are marked *


Related Exams

0
0
0
0

Contact Us

If you have any question please leave me your email address, we will reply and send email to you in 12 hours.

Our Working Time: ( GMT 0:00-15:00 )
From Monday to Saturday

Support: Contact now