Free CWNA-106 Web TestEngine Demo

Q8 Single choice

What statement is true concerning the use of Orthogonal Frequency Division Multiplexing (OFDM) in IEEE 802.11 WLANs?

A
802.11a and 11n use six (6) "pilot" subcarriers as a reference for thereceiver to detect frequency and phase shifts of the signal.
B
802.11a/g/n OFDM includes several combinations of modulation and coding to achieve data rates from
1-600 Mbps.
C
With 802.11a OFDM, 16-QAM provides either 48 or 54 Mbps data rates, dependingupon coding rates.
D
802.11ac VHT-OFDM utilizes 256-QAM, which increases the data rate significantlyover 64-QAM
available in HT-OFDM.
E
In 802.11a OFDM, fifty-six (56) subcarriers are used as parallel symbol transmission paths to carry data.

CWNA-106 Web TestEngine demo