CWNA-106 Exam Dumps : Certified Wireless Network Administrator

What data cabling is currently installed in the rooms and throughout the hotel?

How much RF loss do you expect between hotel rooms?

Who installed your existing wired network?

What types of applications will be used by the hotel staff?

On what frequency do the microwave ovens operate in the hotel suites?

802.11a and 11n use six (6) “pilot” subcarriers as a reference for the receiver to detect frequency and phase shifts of the signal.

802.11a/g/n OFDM includes several combinations of modulation and coding to achieve data rates from 1-600 Mbps.

With 802.11a OFDM, 16-QAM provides either 48 or 54 Mbps data rates, depending upon coding rates.

802.11ac VHT-OFDM utilizes 256-QAM, which increases the data rate significantly over 64-QAM available in HT-OFDM.

In 802.11a OFDM, fifty-six (56) subcarriers are used as parallel symbol transmission paths to carry data.

Fade Margin is an additional pad of signal strength designed into the RF system to compensate for unpredictable signal fading.

The Fade Margin of a long-distance radio link should be equivalent to the receiver’s antenna gain.

A Fade Margin is unnecessary on a long-distance RF link if more than 80% of the first Fresnel zone is clear of obstructions.

The Fade Margin is a measurement of signal loss through free space, and is a function of frequency and distance.