Learn the language. Understand the technology. Master the concepts.

Anyone can open the site and study immediately. There is no registration, subscription, email capture, daily quiz limit, or locked category.

What stays on your device

Quiz history, flashcard ratings, mastery, streaks, and the daily-challenge checkmark are stored in localStorage. Export that data as JSON if you want a backup. Importing a file replaces the progress already stored in this browser, after you confirm. Reset deletes it. Clearing this site's browser data can also delete it.

How review is scheduled

The scheduler is an SM-2 style algorithm. Quality 5 is "I know this," 4 is a correct quiz answer, 3 is "Need more practice," 2 is a missed quiz answer, and 1 is "I don't know this yet." A score below 3 resets the repetition count and asks again the next day. Successful reviews grow the interval from 1 day to 6 days and then by the ease factor. Ease starts at 2.5 and never drops below 1.3.

Mastered requires at least four successful recalls, three in a row, an interval of 7 days or more, and an ease factor of at least 2.3. One correct answer cannot master a term. When a mastered term becomes due, it returns as needing review.

How the content was written

Definitions were written for this project and checked against public references such as IETF RFCs, NIST publications, CISA guidance, OWASP resources, and official tool documentation. Certification paths follow publicly known foundational topics. They are original explanations, not copied exam questions, and Git in the Zone is not affiliated with or endorsed by CompTIA or any tool vendor.

Security of the site itself

There is no authentication system and no database. Imported progress files are validated before they replace anything. Quiz text is rendered as text, not HTML. Educational command examples are not executed. Practice security techniques only on systems you own or have written permission to test.