CWTS

Last month, I took the Certified Wireless Technology Specialist (CWTS) exam. This is issued by CWNP, who are similar to CompTIA, i.e. it’s a vendor-neutral exam rather than being based around specific technology (e.g. Cisco access points).

The CWNP website says: “The CWTS certification validates the knowledge of enterprise WLAN sales and support professionals who must be familiar and confident with the terminology and basic functionality of enterprise 802.11 wireless networks.” Similarly, when I booked the exam on the Pearson Vue website, they list it as: “PW0-071: Certified Wireless Technology Specialist – Sales (CWTS)”. This exam isn’t a pre-requisite for any of the higher qualifications, so you could start with the CWNA instead (“the foundation level enterprise Wi-Fi certification for the CWNP Program”). As I understand it, the main difference between the CWTS and the CWNA is “what vs. how”, although I don’t really know enough about the CWNA yet to comment in detail.

Having said that, I learnt a lot by preparing for this exam, and I think there is quite a bit of technical detail in here. For instance, here’s section 3.6 of the exam objectives:

Understand and apply basic RF antenna concepts

  • Passive Gain
  • Beamwidth
  • Simple diversity
  • Polarization

I think there are a lot of IT professionals who would struggle to define all of those terms. Similarly, here’s one of the sample questions from the start of the textbook:

What can contribute to voltage standing wave ratio (VSWR) in an IEEE 802.11g wireless LAN circuit?

  1. Output power of the access point
  2. Impedance mismatch
  3. Gain of an antenna
  4. Attenuation value of cable

So, this is a bit more involved than just saying “Buy a wireless router and plug it in at home”!

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