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CWNA-108 · Question #118
CWNA-108 Question #118: Real Exam Question with Answer & Explanation
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Question
What statement is true concerning the use of Orthogonal Frequency Division Multiplexing (OFDM) modulation method in IEEE 802.11 WLANs?
Options
- AOFDM was used by Frequency Hopping Spread Spectrum (FHSS) PHY devices.
- BOFDM was first introduced in 802.11a and is used by the ERP, HT and VHT PHYs as well
- COFDM implements BPSK modulation to allow for data rates up to 7 Gbps.
- DOFDM modulation is used only in 5 GHz 802.11 transmissions.
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