Linux remains to make significant inroads in the mainstream IT world, proving to be a practical and economical solution to day-to-day activities. As many companies adopt this operating system, the need for qualified and skilled Linux IT professionals is on the upsurge. For this reason, earning the CompTIA Linux+ certification is beneficial as it is the critical qualification validating an IT professional as well equipped.

This certificate covers all the necessary skills required to fix and run the Linux Operating System, including file permissions, user administration, the management of Linux systems, and fundamental concepts software configurations. Also, CompTIA recommends you pass XK0-004 exam before you can proceed to advanced certifications from Linux, Oracle, or Novell.

CompTIA XK0-004: Career Prospects

The professionals who pass the CompTIA XK0-004 exam are qualified to get the CompTIA Linux+ certification. With this certificate, they can explore a variety of career prospects. Some of the job roles that they can take up include a Systems Administrator, a Technical Support Specialist, a Linux Administrator, a Web Administrator, and a Network Administrator, among others. The salary outlook for these titles is also attractive as the certified individuals in any of these positions can earn an average of $75,000 per annum. It’s important to mention that some individuals can get more than this average sum as it mostly depends on their job role, experience, and their workplace.

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

Does This Certificate Open New Career Opportunities?

Yes! The CompTIA Linux+ certification is all you need to fast track your professional growth along the Linux career path. Tons of reputable companies trust the Linux+ certification and certified individuals to manage their services in the modern business landscape. They include the US Department of Defense, Aetna, General Dynamics, and Dell to mention just a few. That being said, a few job titles with the salaries reported from Payscale that will require the Linux+ skills are highlighted below:

• Web Administrator ($57,340).
• Network Administrator ($59,974);
• Linux Administrator ($74,081);
• Technical Support Specialist ($51,716);
• Systems Administrator ($62,746);

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.

• 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.

• 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.

• 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.