CWNA®: Certified Wireless Network Administrator Official Study Guide

Chapter 9. 802.11 MAC Architecture

IN THIS CHAPTER, YOU WILL LEARN ABOUT THE FOLLOWING:

• Packets, frames, and bits

• Data-Link layer

  • MAC Service Data Unit (MSDU)

  • MAC Protocol Data Unit (MPDU)

• Physical layer

  • PLCP Service Data Unit (PSDU)

  • PLCP Protocol Data Unit (PPDU)

• 802.11 and 802.3 interoperability

• Three 802.11 frame types

  • Management frames

  • Control frames

  • Data frames

• Beacon management frame (beacon)

• Passive scanning

• Active scanning

• Authentication

  • Open System authentication

  • Shared Key authentication

• Association

• Authentication and association states

• Basic and supported rates

• Roaming

• Reassociation

• Disassociation

• Deauthentication

• ACK frame

• Fragmentation

• Protection mechanism

• RTS/CTS

• CTS-to-Self

• Data frames

• Power management

  • Active mode

  • Power Save mode

  • Traffic indication map (TIM)

  • Delivery ...