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 (135)
✍️ 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. In a relational database table for employees, what is the primary purpose of a 'EmployeeID' column that is designated as a primary key?
A primary key is a column (or a set of columns) in a table whose main purpose is to uniquely identify each record in that table. [27, 7] An 'EmployeeID' is a perfect candidate for a primary key because each employee will have a unique ID, ensuring no two records are identical and allowing for reliable data retrieval and relationships.
🎯 Free COMPTIA Practice Tests
📖 COMPTIA Guides & Articles
- 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
- CompTIA Network+
- CompTIA ITF+
- CompTIA Network+ vs CySA+: Which One Should You Choose?
- Security+ vs CEH: Which One Should You Choose?