Wireless LANs Study Notes

PropellerAds

wireless-lans

  • The IEEE 802.11 standard for wireless LANs defines two services: basic service set (BSS) and extended service set (ESS).
  • The access method used in the distributed coordination function (OCF) MAC sublayer is CSMAICA.
  • The access method used in the point coordination function (PCF) MAC sublayer is polling.
  • The network allocation vector (NAV) is a timer used for collision avoidance.
  • The MAC layer frame has nine fields. The addressing mechanism can include up to four addresses.
  • Wireless LANs use management frames, control frames, and data frames.
  • IEEE 802.11 defines several physical layers, with different data rates and modulating
    techniques.
  • Bluetooth is a wireless LAN technology that connects devices (called gadgets) in a
    small area.
  • A Bluetooth network is called a piconet. Multiple piconets fonn a network called a
    scatternet.
  • A Bluetooth network consists of one primary device and up to seven secondary
    devices.

 

Try Now – Data Communication and Networking MCQs
Practice Now – Data Communication and Networking Online Tests