3385237
| Question | Answer |
| IEEE 802.11 | Infrared Frequency Hopping Spread Spectrum (FHSS) Direct Sequence Spread Spectrum (DSSS) |
| 802.11-2007 Ratified Amendments | 802.11b-1999 802.11a-1999 802.11g-2003 802.11d-2001 802.11h-2003 802.11i-2004 802.11j-2004 802.11e-2005 |
| 802.11b-1999 | Defined 802.11b High-Rate DSSS (HR/DSSS) Uses CCK - Complementary Code Keying 1, 2, 5.5, and 11 Mbps |
| 802.11a-1999 | 5 GHz operation Orthogonal Frequency Division Multiplexing (OFDM) 6, 12, and 24 Mbps required 6, 9, 12, 18, 24, 36, 48, and 54 Mbps |
| 802.11g-2003 | Extended Rate Physical (ERP) 2.4 GHz operation Mandatory ERP-OFDM PHY @ 6, 9, 12, 18, 23, 36, 48, and 54 Mbps | 6, 12, and 24 Mbps required Mandatory ERP-DSSS/CCK PHY @ 1, 2, 5.5, and 11 Mbps |
| 802.11d-2001 | Compliance w/ regulatory domains in US, Japan, Canada, and Europe |
| 802.11h-2003 | Defines DFS and TPC Introduced UNII-2E for 11 channels |
| UNII-1 | 4 channels 802.11a amendment 5.150 - 5.250 GHz |
| UNII-2 | 4 channels 802.11a amendment 5.250 - 5.350 GHz |
| UNII-2E | 11 channels 802.11h amendment 5.47 - 5.725 GHz |
| UNII-3 | 4 channels 802.11a amendment 5.725 - 5.825 GHz |
| DFS | Dynamic Frequency Selection 5 GHz OFDM radios for radar detection and radar-interference avoidance |
| TPC | Transmit Power Control OFDM and 5 GHz Regulates power levels |
| 802.11i-2004 | Defines RSN Data Privacy w/ CCMP/AES and TKIP Data Integrity w/ MIC Authentication w/ 802.1X or PSK Robust Security Network |
| 802.11j-2004 | Japanese regulatory approval enhancing 802.11 MAC and 802.11a PHY in 4.9 GHz and 5 GHz |
| 802.11e-2005 | Defines QoS for VoWiFi Defines EDCA and HCCA |
| EDCA | Enhanced Distributed Channel Access 802.11e Part of Hybrid Coordination Function (HCF) |
| HCCA | Hybrid Coordination Function Controlled Channel Access 802.11e Extension of PCF |
| 802.11-2012 amendments | 802.11-2007 802.11r-2008 802.11k-2008 802.11y-2008 802.11w-2009 802.11n-2009 802.11p-2010 802.11z-2010 802.11u-2011 802.11v-2011 802.11s-2011 |
| 802.11r-2008 | Fast basic service set transition (FT) 802.11-2012 amendment Fast secure roaming w/ RSN |
| 802.11k-2008 | Defines radio resource measurement (RRM) 802.11-2012 amendment Defines TPC, Client statistics, channel statistics, neighbor reports |
| 802.11y-2008 | 802.11-2012 amendment Defines dynamic STA enablement (DSE) |
| 802.11w-2009 | 802.11-2012 amendment Robust management frames Protection for unicast, broadcast, and multicast management frames |
| 802.11n-2009 | 802.11-2012 amendment Defines High Throughput (HT) Up to 600 Mbps MIMO w/ OFDM |
| 802.11p-2010 | Support Intelligent Transportation Systems (ITS) Wireless Access in Vehicular Environments (WAVE) |
| 802.11z-2010 | Standardize Direct Link Setup (DLS) |
| 802.11u-2011 | Wireless Internetworking w/ External Networks Basis for Wi-Fi Alliance Hotspot 2.0 |
| 802.11v-2011 | 802.11-2012 amendment Defines method for retrieving information from stations Defines Wireless Network Management (WNM) |
| 802.11s-2011 | Wireless Distribution Systems (WDS) Standardizes mesh networking |
| 802.11ae-2012 | Enhancements to QoS management |
| 802.11aa-2012 | QoS enhancements to 802.11 MAC for robust audio and video streaming |
| 802.11ad-2012 | Defines Very High Throughput (VHT) Up to 7 Gbps on 60 GHz frequency |
| 802.11ac-2013 | Amendment defines Very High Throughput (VHT) 80 MHz and 160 MHz channels 256-QAM Up to 8 spatial streams MU-MIMO |
| 802.11af-2014 | Use of wireless in TV white space in 54 MHz and 790 MHz |
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