The objectives covered in the CompTIA XK0 004 test include the areas that you need to learn in order to get all the skills required for your future tasks. By mastering these skills, you will be able to pass the exam and become a competent Linux Administrator. Thus, the list of the domains to study include the following:
- Systems Operation and Maintenance
In this section, which will have the largest amount of the questions (26%), you will be given several scenarios that cover the management of services, groups, and users, conduction of removals, updates, configurations, and software installations, as well as creation, redirection, and modification of files. It is also vital to have those skills that will help you manage services, understand server roles, automate and schedule jobs, as well as contrast and compare Linux graphical user interfaces. These processes include the modification of chage and passwd, usage of RPM, APT, and Zypper installation tools, as well as file and directory operations. Your expertise in monitoring and configuring tools, console redirection, and text processing should be on a decent level as well.
- Linux Diagnostics and Troubleshooting
The objective will offer you about 20% of the whole exam content that will be during your test. Its main task is to evaluate your skills in analyzing system properties in order to optimize performance and remediate accordingly, troubleshooting user issues, and analyzing hardware and app issues. These tasks include configuration and monitoring of storage, network, CPU, and memory as well as process management and troubleshooting of additional hardware issues.
You should also know about various adapters, such as SATA, SCSI, HBA, and RAID, as well as have the skills in working with dependencies that include libraries, patching, GCC compatibility, update issues, and environment variables.
- Scripting and Automation
About only 14% of the content is from this domain. It covers the details of the deployment and execution of the basic BASH scripts, orchestration processes and concepts, and the process of carrying out version control using Git. These tasks contain shell environments and variables, file globbing, metacharacters, conditional statements, arguments, and automated configuration management.
- Security
This topic covers about 19% of the exam content, and you will need to learn how to implement and configure appropriate authentication and configure methods, how to acquire or apply the appropriate group and/or user ownership and permissions, as well as be skillful in implementing logging services and Linux firewalls and configure them. These include your knowledge of file and directory permissions, user types, key file locations, and log management.
In this domain, you should gain the relevant skills in restoring and compressing files and know about security best practices in a Linux environment. This means that you will need to perform archivation and restoration of utilities, use extra authentication methods, and change default ports.
- System and Hardware Configuration
This subject area has 21% of the exam content and contains the concepts of Linux boot processes and requires that you know the boot loaders such as GRUB and GRUB2, as well as the boot options, including NFS, UEFI/EFI, PXE, Boot from HTTP/FTP, and Boot from ISO. You should also know which file locations as well as boot modules and files can be used. They include the dracut and mkinitrd commands, efi files, vmlinux, and vmlinuz.
Besides that, you need to have the skills in installing, configuring, and monitoring kernel modules, as well as configuring and verifying network connection parameters. These processes contain various commands, such as modprobe, dmesg, lsmod, depmod, and diagnostic tools that include host, iwconfig, nslookup, etc. It is also important to know how to manage storage in a Linux environment, configure localization options, as well as contrast and compare virtualization and Cloud technologies and concepts.
CompTIA XK0-004 Exam Syllabus Topics:
| Topic | Details |
|---|---|
Hardware and System Configuration - 21% | |
| Explain Linux boot process concepts. | 1.Boot loaders
2.Boot options
2.File locations
3.Boot modules and files
4.Kernel panic |
| Given a scenario, install, configure, and monitor kernel modules. | 1.Commands
2.Locations
|
| Given a scenario, configure and verify network connection parameters. | 1.Diagnostic tools
2.Configuration files
3.Bonding
|
| Given a scenario, manage storage in a Linux environment. | 1.Basic partitions
2.File system hierarchy
3.Device mapper
4.Tools
5.Location
6.File system types
|
| Compare and contrast cloud and virtualization concepts and technologies. | 1.Templates
2.Bootstrapping
3.Storage
4.Network considerations
5.Types of hypervisors
|
| Given a scenario, configure localization options. | 1.File locations
2.Commands
3.Environment variables
4.Character sets
|
Systems Operation and Maintenance - 26% | |
| Given a scenario, conduct software installations, configurations, updates, and removals. | 1.Package types
2.Installation tools
3.Build tools
4.Repositories
5.Acquisition commands
|
| Given a scenario, manage users and groups. | 1.Creation
2.Modification
3.Deletion
4.Queries
5.Quotas
6.Profiles
7.Important files and file contents
|
| Given a scenario, create, modify, and redirect files. | 1.Text editors
2.File readers
3.Output redirection
4.Text processing
5.File and directory operations
|
| Given a scenario, manage services. | 1.Systemd management
2.SysVinit
|
| 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
2.Monitoring and configuration tools
3.File locations
4.Hot pluggable devices
|
| Compare and contrast Linux graphical user interfaces. | 1.Servers
2.GUI
3.Remote desktop
4.Console redirection
5.Accessibility |
Security - 19% | |
| Given a scenario, apply or acquire the appropriate user and/or group permissions and ownership. | 1.File and directory permissions
2.Context-based permissions
3.Privilege escalation
4.User types
|
| Given a scenario, configure and implement appropriate access and authentication methods. | 1.PAM
2.SSH
3.TTYs
4.PTYs
6.VPN as a client
|
| Summarize security best practices in a Linux environment. | 1.Boot security
2.Additional authentication methods
3.Importance of disabling root login via SSH
5.Chroot jail services
9.Change default ports
11.Importance of enabling SSL/TLS
16.Restrict cron access |
| Given a scenario, implement logging services. | 1.Key file locations
2.Log management
3.lastb |
| Given a scenario, implement and configure Linux firewalls. | 1.Access control lists
2.Technologies
3.IP forwarding
4.Dynamic rule sets
5.Common application firewall configurations
|
| Given a scenario, backup, restore, and compress files. | 1.Archive and restore utilities
2.Compression
3.Backup types
4.Off-site/off-system storage
5.Integrity checks
|
Linux Troubleshooting and Diagnostics - 20% | |
| Given a scenario, analyze system properties and remediate accordingly. | 1.Network monitoring and configuration
2.Storage monitoring and configuration
3.CPU monitoring and configuration
4.Memory monitoring and configuration
5.Lost root password
|
| Given a scenario, analyze system processes in order to optimize performance. | 1.Process management
|
| Given a scenario, analyze and troubleshoot user issues. | 1.Permissions
2.Access
3.Authentication
4.File creation
5.Insufficient privileges for authorization
6.Environment and shell issues |
| Given a scenario, analyze and troubleshoot application and hardware issues. | 1.SELinux context violations 2.Storage
3.Firewall
4.Permission
5.Dependencies
6.Troubleshooting additional hardware issues
|
Automation and Scripting - 14% | |
| Given a scenario, deploy and execute basic BASH scripts. | 1.Shell environments and shell variables
2.#!/bin/bash
5.Extensions
7.File globbing
8.Redirection and piping
10.Metacharacters
13.Conditional statements
14.Escaping characters |
| Given a scenario, carry out version control using Git. | 1.Arguments
2.Files
|
| 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 |
Target audience and recommended experience
If you are an IT professional who needs to gain skills in using Linux to manage everything from smartphones and cars to supercomputers and servers, you will get a lot of benefits from pursuing this pathway.
All the potential candidates should have the relevant knowledge of how to deal with different tasks, such as basic maintenance, networking, configuration and installation of workstations, as well as usage of the Linux command line. Besides that, you need to have the CompTIA A+ and CompTIA Network+ certifications and gain about a year of working as a Linux Administrator.
Reference: https://certification.comptia.org/certifications/linux#overview
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