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. What is the purpose of configuring a management VLAN on an access point? → To isolate management traffic from user data traffic
4. How does the CWT body of knowledge relate to daily professional practice? → It provides the foundational framework guiding decision-making and standard practices
5. After a power outage, several APs do not come back online. The most likely cause is: → The PoE switch or injectors did not restore power to all ports
6. What does 'band steering' do in modern WLANs? → It redirects capable devices to the 5 GHz band
7. What does the AIFSN (Arbitration Interframe Space Number) control in 802.11e WMM? → The minimum wait time before a station can access the channel after it becomes idle
8. What is the function of a firewall in a wireless network? → To filter and protect network traffic
9. Which 802.11 feature uses the physical carrier sense mechanism and a network allocation vector (NAV) to avoid collisions? → CSMA/CA
10. What is the FIRST step before operating any equipment in CWT practice? → Conduct a pre-operation inspection and verify safety systems
11. Which IEEE standard originally defined Power over Ethernet (PoE), delivering up to 15.4W per port? → IEEE 802.3af
12. A WLAN controller shows an AP in 'discovery' state and it never transitions to 'joined.' What should you verify first? → That the AP can reach the WLC IP address and UDP port 5246/5247 are open
13. What is the primary role of a RADIUS server in an enterprise WLAN deployment? → Authenticate users and authorize network access via 802.1X
14. 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
15. What does the 'perpetual PoE' feature on enterprise switches provide? → Uninterrupted PoE power to ports during a switch reboot or firmware upgrade
16. 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
17. A client can connect to the WLAN but cannot reach the internet. Other clients on the same SSID work fine. What is the most likely cause? → The client has an incorrect IP address or DNS configuration
18. Which tool is used to measure signal strength during installation? → Wi-Fi analyzer
19. Users report slow Wi-Fi speeds only during business hours. Which troubleshooting step is most appropriate? → Analyze channel utilization and client count during peak hours
20. What is the maximum number of spatial streams supported by 802.11ac Wave 2 (Wi-Fi 5) standard? → 8
21. A client cannot associate to an AP even though the correct SSID is selected. The technician confirms the passphrase is correct. What should be checked next? → Client's MAC address and whether MAC filtering is enabled
22. How should Certified Wireless Technician professionals handle equipment showing signs of malfunction during operation? → Immediately cease operation, secure the equipment, and report
23. What is the maximum power output per port at the PSE specified by IEEE 802.3at (PoE+)? → 30 watts
24. What is the maximum standard cable run length permitted for PoE power delivery? → 100 meters
25. What is the PRIMARY purpose of obtaining CWT certification in Certified Wireless Technician? → To demonstrate verified competency and adherence to professional standards
26. What distinguishes a Certified Wireless Technician certified professional from a non-certified practitioner? → Certification validates competency through standardized assessment against benchmarks
27. 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
28. What is the purpose of performing a firmware update on an access point? → To enhance device functionality and security
29. In RF propagation, what term describes signal power loss due to distance in free space? → Free-space path loss
30. Which preventive maintenance approach is MOST effective for CWT professionals? → Schedule regular maintenance based on manufacturer recommendations and usage