12 | Karteikarten

Frage	Antworten
L2 Retransmissions	When MAC sublayer frame is not acknowledged.
Aggregate Frame retransmissions	Retransmitted if one of the aggregate frames is corrupted
Causes of retransmissions	Multipath RF interference Low SNR
RF Interference	Strong transmitting amplitude from another radio during CCA
Narrowband Interference	High amplitude source of interference
Wideband Interference	Disrupts entire frequency band.
Can cause inter symbol interference.	Multipath
Adjacent Channel Interference	From overlapping frequency space.
Low SNR	Background noise too close to received signal or received signal is too low.
Near/Far	Low-powered clients at greater distances to the AP will be unheard.
DRS	Dynamic Rate Switching. Clients moving away from AP shift to lower rates and less complex MCS.
Co-channel Interference	APs on the same channel, contending for medium. Increases overhead.
Variables that affect range of WLAN	Transmission power rates. Antenna gain. Antenna type. Wavelength. FSPL. Physical environment.
Variables that affect throughput of WLAN	CSMA/CA. Encryption. Application use. Number of clients. L2 retransmissions.

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	Erstellt von rowelld vor etwa 9 Jahre