COMPTIA Study Guide 2026
Everything you need to pass the COMPTIA exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 COMPTIA Exam Format at a Glance
📚 COMPTIA Topics to Study (151)
✍️ Sample COMPTIA Questions & Answers
1. Which feature of WPA3-Personal provides forward secrecy, ensuring past session traffic cannot be decrypted even if the passphrase is later compromised?
WPA3-SAE generates a unique session key for every connection, so compromising the passphrase later cannot decrypt previously recorded traffic.
2. Which protocol does 802.11ax use to allow multiple clients to transmit UPLINK data to the AP simultaneously, a capability not present in 802.11ac?
Wi-Fi 6 introduced both Uplink OFDMA and Uplink MU-MIMO, allowing multiple clients to send data to the AP simultaneously, unlike 802.11ac which only supported downlink MU-MIMO.
3. A /25 subnet is applied to the 10.0.0.0 network. How many usable host addresses are available?
A /25 subnet has 128 total addresses; subtracting the network and broadcast addresses leaves 126 usable host IPs.
4. A technician uses the divide-and-conquer troubleshooting method. On which OSI layer does this approach typically begin?
Divide and conquer typically starts at Layer 3 (Network) by testing IP connectivity, then moves up or down based on results.
5. Which step of the CompTIA troubleshooting methodology involves asking the user 'What changed recently?'
Identifying the problem includes gathering information from users, which includes asking about recent changes that may have triggered the issue.
6. Which power supply specification describes its efficiency at converting AC input to DC output?
80 Plus certification levels (Bronze, Silver, Gold, Platinum, Titanium) indicate the PSU's AC-to-DC conversion efficiency at various load levels.
🎯 Free COMPTIA Practice Tests
📖 COMPTIA Guides & Articles
- What Is the Current CompTIA A+ Exam? Complete Guide to Certification, Cost & How to Pass
- Where to Take the CompTIA A+ Exam: Complete Guide to Registration, Cost & Prep
- How Long to Study for CompTIA A+: Complete Exam & Certification Guide
- How to Take the CompTIA A+ Exam: Complete Guide for 2026
- CompTIA Network+ Practice Test PDF (Free Printable 2026)
- CompTIA ITF+ Practice Test PDF (Free Printable 2026)
- CompTIA Practice Test PDF (Free Printable 2026)
- CompTIA Computing Technology Industry Association
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- A timed, full-length CompTIA mock exam — 90 questions in 90 minutes with a 67% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
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