18

Beschreibung

cwna CWNA Karteikarten am 18, erstellt von rowelld am 12/10/2015.
rowelld
Karteikarten von rowelld, aktualisiert more than 1 year ago
rowelld
Erstellt von rowelld vor etwa 9 Jahre
6
2

Zusammenfassung der Ressource

Frage Antworten
802.11n Defines High Throughput (Clause 20) MIMO
Max Data Rate 600 Mbps
Three Modes HT (Greenfield Mode) Non-HT HT Mixed
Greenfield Mode No nearby legacy stations using same frequency. Cannot communicate with legacy stations.
Non-HT Sends frames in legacy 802.11a/g format. Must use 20 MHz
HT Mixed Uses HT Protection mechanism Requires use of RTS/CTS
STBC Space-Time Block Coding Transmitting info on two or more antennas.
TxBF Transmit Beamforming. Phase adjustments
40 MHz Intolerant Management frame bit. Forces 802.11n AP to switch to 20 MHz channel.
Guard Interval Used between OFDM symbols. To prevent inter symbol interference.
A-MSDU Aggregate MAC Service Data Unit. Combines multiple frames into a single frame transmission.
A-MPDU Aggregate MAC Protocol Data Unit.
Power Management Spatial Multiplexing Power Save (SM Power Save) Power Save Multi Poll (PSMP)
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