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802.x

802 Overview Basics of physical and logical networking concepts.
802.1 Bridging LAN/MAN bridging and management. Covers management and the lower sub-layers of OSI Layer 2, including MAC-based bridging (Media Access Control), virtual LANs and port-based access control.
802.2 Logical Link Commonly referred to as the LLC or Logical Link Control specification. The LLC is the top sub-layer in the data-link layer, OSI Layer 2. Interfaces with the network Layer 3.
802.3 Ethernet "Grandaddy" of the 802 specifications. Provides asynchronous networking using "carrier sense, multiple access with collision detect" (CSMA/CD) over coax, twisted-pair copper, and fiber media. Current speeds range from 10 Mbps to 10 Gbps.
802.4 Token Bus Disbanded
802.5 Token Ring The original token-passing standard for twisted-pair, shielded copper cables. Supports copper and fiber cabling from 4 Mbps to 100 Mbps. Often called "IBM Token-Ring."
802.6 Distributed queue dual bus (DQDB) "Superseded **Revision of 802.1D-1990 edition (ISO/IEC 10038). 802.1D incorporates P802.1p and P802.12e. It also incorporates and supersedes published standards 802.1j and 802.6k. Superseded by 802.1D-2004."
802.7 Broadband LAN Practices Withdrawn Standard. Withdrawn Date: Feb 07, 2003. No longer endorsed by the IEEE.
802.8 Fiber Optic Practices Withdrawn PAR. Standards project no longer endorsed by the IEEE.
802.9 Integrated Services LAN Withdrawn PAR. Standards project no longer endorsed by the IEEE.
802.10 Interoperable LAN security Superseded **Contains: IEEE Std 802.10b-1992.
802.11 Wi-Fi Wireless LAN Media Access Control and Physical Layer specification. 802.11a,b,g,etc. are amendments to the original 802.11 standard. Products that implement 802.11 standards must pass tests and are referred to as "Wi-Fi certified."
802.11a  
  • Specifies a PHY that operates in the 5 GHz U-NII band in the US - initially 5.15-5.35 AND 5.725-5.85 - since expanded to additional frequencies
  • Uses Orthogonal Frequency-Division Multiplexing
  • Enhanced data speed to 54 Mbps
  • Ratified after 802.11b
This is a preview of 802.x. Read the full post (636 words, 0 images, estimated 2:33 mins reading time)




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About the Geekette

I am a Computer and Network Technician. I love what I do for a living, as my work is also my hobby.

All of the technical information from the original Aleeya.net site became this site - GirlGeekette dotNet - and the remaining became what is now known as Aleeya dotNet. This site is where I store all of my notes related to computers and Technology so I may share it with others.

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