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PW0-070 · Question #236
PW0-070 Question #236: Real Exam Question with Answer & Explanation
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Question
What statement is true concerning the use of Orthogonal Frequency Division Multiplexing (OFDM) in IEEE 802.11 WLANs?
Options
- A802.11a and 11n use six (6) "pilot" subcarriers as a reference for the receiver to detect frequency and
- B802.11a/g/n OFDM includes several combinations of modulation and coding to achieve data rates from
- CWith 802.11a OFDM, 16-QAM provides either 48 or 54 Mbps data rates, depending upon coding rates.
- D802.11n HT-OFDM utilizes 256-QAM, which increases the data rate from 54 Mbps (with 64- QAM) up
- EIn 802.11a OFDM, forty-eight (48) subcarriers are used as parallel symbol transmission paths to carry data.
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