What is the purpose of a PHY preamble?

Question

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

• A
  75% (27)
• B
  3% (1)
• C
  8% (3)
• D
  14% (5)

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