About CompTIA XK0-004 Exam
The CompTIA XK0-004 exam is associated with the Linux+ certification that is an ideal choice for those who want to prepare themselves to work with Linux and get high-quality skills. It is an option from the Infrastructure series of the certificates that CompTIA offers in its program. A vast number of companies use Linux in cybersecurity, Cloud, web administration, and mobile applications, which means that this certification will help your career in any case.
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.
Exam details and topics
To get the CompTIA Linux+ certification, you need to pass only one test, also known as XK0 004. This is a 90-minute exam, which has about 90 questions of various types. Thus, during the test, you can run into the performance-based items, fill-in-the-blank, multiple choice, and multiple response. These questions will be in the English language only, and you will have to clear them with 720 points. This is the minimum passing score that you should achieve, so you can try to earn more. The maximum possible mark is 900. As for the voucher, it is required to purchase it on the Pearson VUE platform for $329.
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:
- 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.
- 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.
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.
- 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.
Job roles and salaries
If you learn all the skills and knowledge required for the successful completing of the CompTIA XK0 004 exam, you will be able to obtain the Linux+ certification that will improve your career. Thus, it will guarantee you a higher salary, respect from your peers and colleagues, and even possible promotion. With the CompTIA Linux+ certificate, you are able to land a job in many companies and become a Technical Architect, a Linux System Administrator, a Technical Support Specialist, a Web Administrator, a Network Administrator, a Systems Administrator, a Cloud Automation Engineer, or an Advanced Diagnostic Engineer. The annual salary that you can earn if you choose one of the options can be from $54,000 to $160,000.