RCWPRKR Certified Wireless Professional

The math and measurement layer everything else stands on. You work in dBm/dBi/EIRP natively, build link budgets that account for FSPL, wall attenuation and fade margin, and connect SNR to MCS rates on 802.11ax/be. Then you go hands-on with spectrum analysis — Ekahau Sidekick 2 spectrum view and controller-side spectrum data — to identify non-Wi-Fi interferers, evaluate DFS behaviour on 5 GHz, and understand 6 GHz PSC channels and AFC constraints.

The core professional workflow: requirements gathering, predictive modelling and field validation. You learn to interrogate stakeholders for real requirements (device mix, density, applications, roaming zones), build calibrated predictive models in Ekahau AI Pro with correct wall attenuation values, and then validate with AP-on-a-stick, passive and active survey techniques. Coverage targets are engineered per-application: -65 dBm primary/-67 dBm secondary for voice, 25 dB SNR, secondary coverage for roaming and location services.

Designing for people-per-square-metre instead of coverage. You model airtime demand from application throughput and device capabilities, size cells with directional antennas and power reduction, and build channel-reuse plans that survive 500 devices in one hall. Covers auditoriums, training floors, town-hall spaces and dense open offices; band steering, 20/40/80 MHz width trade-offs, minimum basic-rate manipulation, OFDMA/MU-MIMO realities on Wi-Fi 6/6E, and when to lean on 6 GHz for clean spectrum.

Full-stack enterprise Wi-Fi security built against a live RADIUS/NAC environment. You implement WPA3-Enterprise (including 192-bit mode), SAE and transition modes, OWE for guest, and the complete 802.1X/EAP machinery: EAP-TLS with a real PKI (certificate templates, SCEP/EST enrolment), PEAP-MSCHAPv2 and its deprecation path, and Aruba ClearPass policy services with role derivation and dynamic segmentation. You capture and read the 4-way handshake and EAP exchanges in Wireshark rather than trusting green checkmarks.

Roaming is where good designs die in production. This module dissects the roaming decision — which the CLIENT makes, not the AP — and the standards that assist it: 802.11k neighbor reports, 802.11v BSS transition management, 802.11r FT over-the-air/over-the-DS, plus OKC and PMK caching. You capture real roams from voice handsets and laptops, time the reassociation gap, hunt sticky clients, and learn which combinations break which legacy clients (and how to scope 11r safely).

Engineering deterministic behaviour on a contention-based medium. You go deep on WMM access categories and EDCA parameters, DSCP-to-UP mapping and the trust boundary between wired and wireless QoS, and end-to-end marking for Teams/Zoom/Wi-Fi calling. Covers UAPSD power save for voice handsets, airtime fairness, call-quality measurement (MOS, jitter, loss) and validating a voice-grade WLAN with live call testing rather than assumptions.

The platform module, taught at ACMP depth on HPE Aruba Networking gear. Architecture choices — AOS-10 bridged vs tunneled vs mixed forwarding, gateway clusters, campus vs microbranch — and the operational RF machinery: AirMatch channel/power optimization, ClientMatch steering, Live Upgrades and AI Insights in Central. You learn what the automation actually does under the hood so you can decide when to trust it and when to pin channels manually (and the equivalents on Cisco/Juniper Mist are mapped so the skills transfer).

The integration module. A structured troubleshooting methodology (OSI-up from RF: spectrum → association → authentication → network services → application) applied to compound faults, then the capstone: a complete design-and-validate engagement for a realistic multi-floor client brief — predictive design, security architecture, HD zones, roaming domains, QoS — delivered as a professional design package and defended in a live review. The capstone package becomes the verifiable evidence attached to your RCWP credential.