The JK0-U21 exam is the official CompTIA exam behind CompTIA Strata Fundamentals of PC Technology — passing it earns you the CompTIA Strata certification, a credential positioned at the Fundamental level. It is built for candidates who want to validate the skills measured by CompTIA Strata Fundamentals of PC Technology. Depending on your track, the exam is also linked to the CompTIA Strata IT Fundamentals and CompTIA A+ certifications, so one pass can move you toward more than one CompTIA credential.

The JK0-U21 exam presents 70 questions to be completed within 60 minutes. That pace leaves little room for second-guessing: read each question carefully on the first pass, flag the ones you want to revisit, and keep moving instead of stalling on a single item. Before exam day, run at least one full timed session in the TestSimulate desktop or online test engine with a comparable question load — a steady rhythm under the clock is a trainable skill, and it is often what separates a pass from a near miss.

No formal prerequisites. Intended for beginners with basic digital literacy and those preparing for entry-level IT certifications such as CompTIA A+. Because CompTIA revises its certification programs from time to time, treat this as a starting point rather than the final word. Confirm the current eligibility requirements on the official CompTIA exam page before you register.

Yes. A free PDF demo of the JK0-U21 practice questions is available, so you can check the question style and answer quality before spending anything. Every purchase also includes 365 days of free updates — whenever CompTIA adjusts the CompTIA Strata Fundamentals of PC Technology blueprint, your material is refreshed at no cost during that period. After the first year, you can extend the update service at a 50% discount from your member zone.

TestSimulate backs your purchase with a 100% Money Back Guarantee. If you take the corresponding exam within 60 days of purchase and do not pass, you can claim a full refund by submitting a scanned copy of your exam enrollment slip together with the official Score Report PDF within 2 days of your exam date; approved claims are processed within 7 days. The guarantee applies only to the exam matching your purchase, the candidate name must match the payer name, and it does not cover attempts taken within 3 days of purchase, candidates who downloaded the material but never sat the exam, expired orders, or free materials. If you would rather keep preparing, you can exchange the product for two free exam preparation packages of equal value and keep the update service on your original purchase.

Delivery is instant: your download is available right after payment, and a copy is emailed to you within one minute. If nothing arrives within 2 hours, check your spam folder and contact our support team. There is no limit on the number of computers you can install the software on.

The CompTIA Strata Fundamentals of PC Technology syllabus is organized into 6 domains. Among the headline areas are Compatibility and Troubleshooting, Security Fundamentals, Software Installation and Operating Systems. Rather than copying every subtopic here, we keep the complete, current outline in the Exam Topics section above — work through it domain by domain with the TestSimulate JK0-U21 practice questions so nothing on the blueprint catches you off guard.