CWT Cheat Sheet 2026

The 30 highest-yield CWT facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What does a red LED on an access point often indicate? → Fault or error condition
2. A VoIP call over Wi-Fi requires low latency and low jitter. Which WMM access category should voice traffic be mapped to? → AC_VO (Voice)
3. How does the CWT body of knowledge relate to daily professional practice? → It provides the foundational framework guiding decision-making and standard practices
4. What does 'band steering' do in modern WLANs? → It redirects capable devices to the 5 GHz band
5. What is the function of a firewall in a wireless network? → To filter and protect network traffic
6. What is the FIRST step before operating any equipment in CWT practice? → Conduct a pre-operation inspection and verify safety systems
7. Which IEEE standard originally defined Power over Ethernet (PoE), delivering up to 15.4W per port? → IEEE 802.3af
8. Which personal protective equipment (PPE) principle applies to ALL CWT certified professionals regardless of their specific role? → PPE must be properly fitted, maintained, and replaced as needed
9. What does the 'perpetual PoE' feature on enterprise switches provide? → Uninterrupted PoE power to ports during a switch reboot or firmware upgrade
10. In Certified Wireless Technician practice, what is the FIRST step when a safety hazard is identified in the workplace? → Immediately secure the area and report the hazard
11. Which tool is used to measure signal strength during installation? → Wi-Fi analyzer
12. What is the maximum number of spatial streams supported by 802.11ac Wave 2 (Wi-Fi 5) standard? → 8
13. How should Certified Wireless Technician professionals handle equipment showing signs of malfunction during operation? → Immediately cease operation, secure the equipment, and report
14. What is the maximum power output per port at the PSE specified by IEEE 802.3at (PoE+)? → 30 watts
15. What is the maximum standard cable run length permitted for PoE power delivery? → 100 meters
16. What is the PRIMARY purpose of obtaining CWT certification in Certified Wireless Technician? → To demonstrate verified competency and adherence to professional standards
17. What distinguishes a Certified Wireless Technician certified professional from a non-certified practitioner? → Certification validates competency through standardized assessment against benchmarks
18. Which UPS characteristic is most critical for protecting a PoE switch that powers mission-critical wireless access points? → Automatic voltage regulation (AVR) with hot-swappable batteries
19. What is the purpose of performing a firmware update on an access point? → To enhance device functionality and security
20. Which preventive maintenance approach is MOST effective for CWT professionals? → Schedule regular maintenance based on manufacturer recommendations and usage
21. What is a common method to improve network performance? → Load balancing
22. What is the MOST important reason for maintaining equipment maintenance logs in CWT practice? → To track maintenance history, predict failures, and demonstrate compliance
23. What is the MOST effective way for new CWT professionals to build competency? → Combining formal education, mentored practice, and ongoing professional development
24. What does RSSI measure in wireless networks? → Signal strength at the receiver
25. How can you test network connectivity issues? → Running a ping command
26. Which foundational principle is MOST important for success in Certified Wireless Technician? → Commitment to continuous learning, ethical practice, and quality outcomes
27. What best practice should be followed when planning power budgets for a PoE switch in a wireless deployment? → Sum device power requirements by class and add 20–25% headroom
28. What minimum AWG conductor size is standard in CAT5e/CAT6 cables and recommended for PoE+ installations? → AWG 24
29. A technician measures 42V at a PoE access point when the PSE outputs 48V. What is the most likely cause? → Excessive cable length or high cable resistance causing voltage drop
30. Which protocol is often used for automatic IP assignment? → DHCP