CWNP
PW0-270 · Question #36
PW0-270 Question #36: Real Exam Question with Answer & Explanation
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Question
What is the purpose of a PHY preamble?
Options
- AIt provides the receiver(s) with an opportunity for RF channel synchronization prior to the start of
- BIt communicates important information about the PSDU's length, rate, and upper layer protocol-
- CIt provides a cyclic redundancy check (CRC) for the receiving station to validate that the PLCP
- DIt indicates to the PHY the modulation that shall be used for transmission (and reception) of the
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