A PHY Header is added to the PSDU at which sub-layer?
: The PLCP adds a preamble and PHY header to the PSDU.
Which one of the following statements is not true concerning DTIMs?
A client is operating in an unstable RF environment. Out of five data frames transmitted to the client it only receives four. The client sends a Block Ack to acknowledge the receipt of these four frames but due to frame corruption the Block Ack is not received by the AP. Which frames will be transmitted?
How is the length of an AIFS is calculated?
(or length) of an AIFS interval. AIFSN values are set for each access category, giving the AIFS
[AC] a shorter or longer duration, in accordance with the desired priority. This is demonstrated by the AIFS[AC]
formula:
AIFS[AC] = AIFSN[AC] aSlotTime + aSIFSTime
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