Locked In: Prep for Linux+

All five CompTIA Linux+ XK0-006 domains in ten-minute lessons, with 435 practice questions, a timed mock exam and spaced review. Works offline.

Locked-In is a focused study companion for the CompTIA Linux+ XK0-006 exam. It is built for short sessions, with concise lessons, quick checks, practice, and review tools that work fully offline.

WHAT'S INCLUDED

• 60 lessons across all five XK0-006 domains: System Management (23%), Services and User Management (20%), Security (18%), Automation, Orchestration and Scripting (17%), and Troubleshooting (22%)
• One topic per published objective, all 29 of them, so you can study against the blueprint
• Coverage of the areas new to XK0-006, including virtualization with KVM and QEMU, containers with Docker and Podman, Python basics, Git, and the responsible use of AI
• Visual aids for the boot process, the filesystem hierarchy, permissions, systemd, LVM, RAID, networking, SELinux, containers, and the virtualization stack
• Inline quick checks at the end of every lesson
• 435 unique multiple-choice practice questions with explanations, weighted to match the published domain percentages
• Scenario and PBQ-style categorization, ordering, and matching activities
• A 90-question, 90-minute timed mock exam with flagging, navigation, and a final review screen
• Command-focused flashcards with spaced repetition
• A searchable glossary covering the official CompTIA Linux+ acronym list and key concepts
• Progress by domain, quiz history, study streaks, bookmarks, personal notes, weak-topic review, and an optional study plan

FREE PREVIEW AND FULL UNLOCK

A starter selection of lessons is free so you can evaluate the library first. A single one-time purchase unlocks the remaining lessons, the full question bank, and every study mode. There is no subscription and no account.

IMPORTANT SCOPE NOTE

Practice questions and PBQ-style activities are original study material, not official CompTIA exam items. The timed set is a study experience, not a reproduction of the live exam. Verify the current objectives, format, and policies directly with CompTIA.

PRIVACY

Study progress is stored on your device. The app requires no account, contains no advertising or third-party analytics, and does not sell or share personal data.

Locked-In is not affiliated with, endorsed by, or sponsored by CompTIA, Inc. CompTIA and Linux+ are trademarks of CompTIA, Inc. Linux is a registered trademark of Linus Torvalds. Locked-In is an independent study aid and does not guarantee exam results.