CWNA®: Certified Wireless Network Administrator Official Study Guide

CWNA®: Certified Wireless Network Administrator Official Study Guide

by David D. Coleman, David A. Westcott
Released April 2009
Publisher(s): Sybex
ISBN: 9780470438909

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Book description

Sybex is now the official publisher for CWNP, the certifying vendor for the CWNA program. This valuable guide covers all objectives for the newest version of the PW0-104 exam, including radio technologies; antenna concepts; wireless LAN hardware and software; network design, installation and management; wireless standards and organizations; 802.11 network architecture; wireless LAN security; performing site surveys; and troubleshooting. Also included are hands-on exercises, chapter review questions, a detailed glossary, and a pre-assessment test. The CD-ROM features two bonus exams, over 150 flashcards, and numerous White Papers and demo software.

Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.

Table of contents

  1. Copyright
  2. Dear Reader,
  3. Acknowledgments
  4. About the Authors
  5. Foreword
  6. Introduction
    1. About CWNA® and CWNP®
    2. How to Become a CWNA
    3. Who Should Buy This Book?
    4. How to Use This Book and the CD
    5. Exam Objectives
    6. CWNA Exam Terminology
    7. Tips for Taking the CWNA Exam
  7. Assessment Test
  8. Answers to Assessment Test
  9. 1. Overview of Wireless Standards, Organizations, and Fundamentals
    1. 1.1. History of WLAN
    2. 1.2. Standards Organizations
      1. 1.2.1. Federal Communications Commission (FCC)
      2. 1.2.2. International Telecommunication Union Radiocommunication Sector (ITU-R)
      3. 1.2.3. Institute of Electrical and Electronics Engineers (IEEE)
      4. 1.2.4. Wi-Fi Alliance
      5. 1.2.5. International Organization for Standardization (ISO)
    3. 1.3. Core, Distribution, and Access
    4. 1.4. Communications Fundamentals
      1. 1.4.1. Understanding Carrier Signals
        1. 1.4.1.1. Amplitude and Wavelength
        2. 1.4.1.2. Frequency
        3. 1.4.1.3. Phase
      2. 1.4.2. Understanding Keying Methods
        1. 1.4.2.1. Amplitude-shift keying
        2. 1.4.2.2. Frequency-shift keying
        3. 1.4.2.3. Phase-shift keying
    5. 1.5. Summary
    6. 1.6. Exam Essentials
    7. 1.7. Key Terms
    8. 1.8. Review Questions
    9. 1.9. Answers to Review Questions
  10. 2. Radio Frequency Fundamentals
    1. 2.1. What Is a Radio Frequency (RF) Signal?
    2. 2.2. Radio Frequency Characteristics
      1. 2.2.1. Wavelength
      2. 2.2.2. Frequency
      3. 2.2.3. Amplitude
      4. 2.2.4. Phase
    3. 2.3. Radio Frequency Behaviors
      1. 2.3.1. Wave Propagation
      2. 2.3.2. Absorption
      3. 2.3.3. Reflection
      4. 2.3.4. Scattering
      5. 2.3.5. Refraction
      6. 2.3.6. Diffraction
      7. 2.3.7. Loss (Attenuation)
      8. 2.3.8. Free Space Path Loss
      9. 2.3.9. Multipath
      10. 2.3.10. Gain (Amplification)
    4. 2.4. Summary
    5. 2.5. Exam Essentials
    6. 2.6. Key Terms
    7. 2.7. Review Questions
    8. 2.8. Answers to Review Questions
  11. 3. Radio Frequency Components, Measurements, and Mathematics
    1. 3.1. RF Components
      1. 3.1.1. Transmitter
      2. 3.1.2. Antenna
      3. 3.1.3. Receiver
      4. 3.1.4. Intentional Radiator (IR)
      5. 3.1.5. Equivalent Isotropically Radiated Power (EIRP)
    2. 3.2. Units of Power and Comparison
      1. 3.2.1. Watt
      2. 3.2.2. Milliwatt (mW)
      3. 3.2.3. Decibel (dB)
      4. 3.2.4. dBi
      5. 3.2.5. dBd
      6. 3.2.6. dBm
      7. 3.2.7. Inverse Square Law
    3. 3.3. RF Mathematics
      1. 3.3.1. Rule of 10s and 3s
        1. 3.3.1.1. RF Math Summary
      2. 3.3.2. Received Signal Strength Indicator (RSSI)
      3. 3.3.3. Link Budget
      4. 3.3.4. Fade Margin/System Operating Margin
    4. 3.4. Summary
    5. 3.5. Exam Essentials
    6. 3.6. Key Terms
    7. 3.7. Review Questions
    8. 3.8. Answers to Review Questions
  12. 4. Radio Frequency Signal and Antenna Concepts
    1. 4.1. Active and Passive Gain
    2. 4.2. Azimuth and Elevation Charts (Antenna Radiation Envelopes)
    3. 4.3. Interpreting Polar Charts
    4. 4.4. Beamwidth
    5. 4.5. Antenna Types
      1. 4.5.1. Omnidirectional Antennas
      2. 4.5.2. Semidirectional Antennas
      3. 4.5.3. Highly Directional Antennas
      4. 4.5.4. Phased Array Antennas
      5. 4.5.5. Sector Antennas
    6. 4.6. Visual Line of Sight
    7. 4.7. RF Line of Sight
    8. 4.8. Fresnel Zone
    9. 4.9. Earth Bulge
    10. 4.10. Antenna Polarization
    11. 4.11. Antenna Diversity
    12. 4.12. Multiple-Input Multiple-Output (MIMO)
    13. 4.13. Antenna Connection and Installation
      1. 4.13.1. Voltage Standing Wave Ratio (VSWR)
      2. 4.13.2. Signal Loss
      3. 4.13.3. Antenna Mounting
        1. 4.13.3.1. Placement
        2. 4.13.3.2. Mounting
        3. 4.13.3.3. Appropriate Use
        4. 4.13.3.4. Orientation and Alignment
        5. 4.13.3.5. Safety
        6. 4.13.3.6. Maintenance
    14. 4.14. Antenna Accessories
      1. 4.14.1. Cables
      2. 4.14.2. Connectors
      3. 4.14.3. Splitters
      4. 4.14.4. Amplifiers
      5. 4.14.5. Attenuators
      6. 4.14.6. Lightning Arrestors
      7. 4.14.7. Grounding Rods and Wires
    15. 4.15. Summary
    16. 4.16. Exam Essentials
    17. 4.17. Key Terms
    18. 4.18. Review Questions
    19. 4.19. Answers to Review Questions
  13. 5. IEEE 802.11 Standards
    1. 5.1. Overview of the IEEE 802.11 Standard
    2. 5.2. IEEE 802.11 Ratified Amendments
      1. 5.2.1. 802.11b
      2. 5.2.2. 802.11a
      3. 5.2.3. 802.11g
      4. 5.2.4. 802.11d
      5. 5.2.5. 802.11F
      6. 5.2.6. 802.11h
      7. 5.2.7. 802.11i
      8. 5.2.8. 802.11j
      9. 5.2.9. 802.11e
      10. 5.2.10. 802.11k
      11. 5.2.11. 802.11r
    3. 5.3. IEEE 802.11 Draft Amendments
      1. 5.3.1. 802.11m
      2. 5.3.2. 802.11n
      3. 5.3.3. 802.11p
      4. 5.3.4. 802.11s
      5. 5.3.5. 802.11T
      6. 5.3.6. 802.11u
      7. 5.3.7. 802.11v
      8. 5.3.8. 802.11w
      9. 5.3.9. 802.11y
      10. 5.3.10. 802.11z
      11. 5.3.11. 802.11aa
    4. 5.4. Summary
    5. 5.5. Exam Essentials
    6. 5.6. Key Terms
    7. 5.7. Review Questions
    8. 5.8. Answers to Review Questions
  14. 6. Wireless Networks and Spread Spectrum Technologies
    1. 6.1. Industrial, Scientific, and Medical (ISM) Bands
      1. 6.1.1. 900 MHz ISM Band
      2. 6.1.2. 2.4 GHz ISM Band
      3. 6.1.3. 5.8 GHz ISM Band
    2. 6.2. Unlicensed National Information Infrastructure (UNII) Bands
      1. 6.2.1. UNII-1 (Lower Band)
      2. 6.2.2. UNII-2 (Middle Band)
      3. 6.2.3. UNII-2 Extended
      4. 6.2.4. UNII-3 (Upper Band)
    3. 6.3. Narrowband and Spread Spectrum
    4. 6.4. Frequency Hopping Spread Spectrum (FHSS)
      1. 6.4.1. Hopping Sequence
      2. 6.4.2. Dwell Time
      3. 6.4.3. Hop Time
      4. 6.4.4. Modulation
    5. 6.5. Direct Sequence Spread Spectrum (DSSS)
      1. 6.5.1. DSSS Data Encoding
      2. 6.5.2. Modulation
    6. 6.6. Packet Binary Convolutional Code (PBCC)
    7. 6.7. Orthogonal Frequency Division Multiplexing (OFDM)
      1. 6.7.1. Convolutional Coding
      2. 6.7.2. Modulation
    8. 6.8. 2.4 GHz Channels
    9. 6.9. 5 GHz Channels
    10. 6.10. Adjacent, Nonadjacent, and Overlapping Channels
    11. 6.11. Throughput vs. Bandwidth
    12. 6.12. Communication Resilience
    13. 6.13. Summary
    14. 6.14. Exam Essentials
    15. 6.15. Key Terms
    16. 6.16. Review Questions
    17. 6.17. Answers to Review Questions
  15. 7. Wireless LAN Topologies
    1. 7.1. Wireless Networking Topologies
      1. 7.1.1. Wireless Wide Area Network (WWAN)
      2. 7.1.2. Wireless Metropolitan Area Network (WMAN)
      3. 7.1.3. Wireless Personal Area Network (WPAN)
      4. 7.1.4. Wireless Local Area Network (WLAN)
    2. 7.2. 802.11 Topologies
      1. 7.2.1. Access Point
      2. 7.2.2. Client Station
      3. 7.2.3. Integration Service (IS)
      4. 7.2.4. Distribution System (DS)
      5. 7.2.5. Wireless Distribution System (WDS)
      6. 7.2.6. Service Set Identifier (SSID)
      7. 7.2.7. Basic Service Set (BSS)
      8. 7.2.8. Basic Service Set Identifier (BSSID)
      9. 7.2.9. Basic Service Area (BSA)
      10. 7.2.10. Extended Service Set (ESS)
      11. 7.2.11. Independent Basic Service Set (IBSS)
      12. 7.2.12. Nonstandard 802.11 Topologies
    3. 7.3. 802.11 Configuration Modes
      1. 7.3.1. Access Point Modes
      2. 7.3.2. Client Station Modes
    4. 7.4. Summary
    5. 7.5. Exam Essentials
    6. 7.6. Key Terms
    7. 7.7. Review Questions
    8. 7.8. Answers to Review Questions
  16. 8. 802.11 Medium Access
    1. 8.1. CSMA/CA vs. CSMA/CD
      1. 8.1.1. Collision Detection
    2. 8.2. Distributed Coordination Function (DCF)
      1. 8.2.1. Interframe Space (IFS)
      2. 8.2.2. Duration/ID Field
      3. 8.2.3. Carrier Sense
        1. 8.2.3.1. Virtual Carrier-Sense
        2. 8.2.3.2. Physical Carrier-Sense
      4. 8.2.4. Random Back-off Timer
    3. 8.3. Point Coordination Function (PCF)
    4. 8.4. Hybrid Coordination Function (HCF)
      1. 8.4.1. Enhanced Distributed Channel Access (EDCA)
      2. 8.4.2. HCF Controlled Channel Access (HCCA)
    5. 8.5. Block Acknowledgment (BA)
    6. 8.6. Wi-Fi Multimedia (WMM)
    7. 8.7. Summary
    8. 8.8. Exam Essentials
    9. 8.9. Key Terms
    10. 8.10. Review Questions
    11. 8.11. Answers to Review Questions
  17. 9. 802.11 MAC Architecture
    1. 9.1. Packets, Frames, and Bits
    2. 9.2. Data-Link Layer
      1. 9.2.1. MAC Service Data Unit (MSDU)
      2. 9.2.2. MAC Protocol Data Unit (MPDU)
    3. 9.3. Physical Layer
      1. 9.3.1. PLCP Service Data Unit (PSDU)
      2. 9.3.2. PLCP Protocol Data Unit (PPDU)
    4. 9.4. 802.11 and 802.3 Interoperability
    5. 9.5. Three 802.11 Frame Types
      1. 9.5.1. Management Frames
      2. 9.5.2. Control Frames
      3. 9.5.3. Data Frames
    6. 9.6. Beacon Management Frame (Beacon)
    7. 9.7. Passive Scanning
    8. 9.8. Active Scanning
    9. 9.9. Authentication
      1. 9.9.1. Open System Authentication
      2. 9.9.2. Shared Key Authentication
    10. 9.10. Association
    11. 9.11. Authentication and Association States
    12. 9.12. Basic and Supported Rates
    13. 9.13. Roaming
    14. 9.14. Reassociation
    15. 9.15. Disassociation
    16. 9.16. Deauthentication
    17. 9.17. ACK Frame
    18. 9.18. Fragmentation
    19. 9.19. Protection Mechanism
    20. 9.20. RTS/CTS
    21. 9.21. CTS-to-Self
    22. 9.22. Data Frames
    23. 9.23. Power Management
      1. 9.23.1. Active Mode
      2. 9.23.2. Power Save Mode
      3. 9.23.3. Traffic Indication Map (TIM)
      4. 9.23.4. Delivery Traffic Indication Message (DTIM)
      5. 9.23.5. Announcement Traffic Indication Message (ATIM)
      6. 9.23.6. WMM Power Save (WMM-PS) and U-APSD
      7. 9.23.7. 802.11n Power Management
    24. 9.24. Summary
    25. 9.25. Exam Essentials
    26. 9.26. Key Terms
    27. 9.27. Review Questions
    28. 9.28. Answers to Review Questions
  18. 10. Wireless Devices
    1. 10.1. Wireless LAN Client Devices
      1. 10.1.1. Radio Card Formats
      2. 10.1.2. Radio Card Chipsets
      3. 10.1.3. Client Utilities
    2. 10.2. Progression of WLAN Architecture
      1. 10.2.1. Autonomous Access Point—Intelligent Edge Architecture
      2. 10.2.2. Wireless Network Management System (WNMS)
      3. 10.2.3. Centralized WLAN Architecture
      4. 10.2.4. Lightweight AP
      5. 10.2.5. WLAN Controller
      6. 10.2.6. Split MAC
      7. 10.2.7. Remote Office WLAN Controller
      8. 10.2.8. Distributed WLAN Architecture
      9. 10.2.9. Distributed WLAN Hybrid
      10. 10.2.10. Unified WLAN Architecture
    3. 10.3. Specialty WLAN Infrastructure
      1. 10.3.1. Wireless Workgroup Bridge
      2. 10.3.2. Wireless LAN Bridges
      3. 10.3.3. Enterprise Wireless Gateway
      4. 10.3.4. Residential Wireless Gateway
      5. 10.3.5. VPN Wireless Router
      6. 10.3.6. Wireless LAN Mesh Access Points
      7. 10.3.7. Enterprise Encryption Gateway
      8. 10.3.8. WLAN Array
      9. 10.3.9. Cooperative Control
      10. 10.3.10. Virtual AP System
      11. 10.3.11. Real-Time Location Systems
      12. 10.3.12. VoWiFi
    4. 10.4. Summary
    5. 10.5. Exam Essentials
    6. 10.6. Key Terms
    7. 10.7. Review Questions
    8. 10.8. Answers to Review Questions
  19. 11. WLAN Deployment and Vertical Markets
    1. 11.1. Corporate Data Access and End-User Mobility
    2. 11.2. Network Extension to Remote Areas
    3. 11.3. Bridging—Building-to-Building Connectivity
    4. 11.4. Wireless ISP (WISP)—Last-Mile Data Delivery
    5. 11.5. Small Office/Home Office (SOHO)
    6. 11.6. Mobile Office Networking
    7. 11.7. Educational/Classroom Use
    8. 11.8. Industrial—Warehousing and Manufacturing
    9. 11.9. Healthcare—Hospitals and Offices
    10. 11.10. Municipal Networks
    11. 11.11. Hotspots—Public Network Access
    12. 11.12. Transportation Networks
    13. 11.13. Law-Enforcement Networks
    14. 11.14. First-Responder Networks
    15. 11.15. Fixed Mobile Convergence
    16. 11.16. WLAN and Health
    17. 11.17. WLAN Vendors
      1. 11.17.1. WLAN Infrastructure
      2. 11.17.2. WLAN Mesh Infrastructure
      3. 11.17.3. WLAN Troubleshooting and Design Solutions
      4. 11.17.4. WLAN Management
      5. 11.17.5. WLAN Security Solutions
      6. 11.17.6. VoWiFi Solutions
      7. 11.17.7. WLAN Fixed Mobile Convergence
      8. 11.17.8. WLAN RTLS Solutions
      9. 11.17.9. WLAN SOHO Vendors
    18. 11.18. Summary
    19. 11.19. Exam Essentials
    20. 11.20. Key Terms
    21. 11.21. Review Questions
    22. 11.22. Answers to Review Questions
  20. 12. WLAN Troubleshooting
    1. 12.1. Layer 2 Retransmissions
      1. 12.1.1. RF Interference
      2. 12.1.2. Multipath
      3. 12.1.3. Adjacent Cell Interference
      4. 12.1.4. Low SNR
      5. 12.1.5. Mismatched Power Settings
      6. 12.1.6. Near/Far
      7. 12.1.7. Hidden Node
    2. 12.2. 802.11 Coverage Considerations
      1. 12.2.1. Dynamic Rate Switching
      2. 12.2.2. Roaming
      3. 12.2.3. Layer 3 Roaming
      4. 12.2.4. Co-channel Interference
      5. 12.2.5. Channel Reuse/Multiple Channel Architecture
      6. 12.2.6. Single Channel Architecture
    3. 12.3. Capacity vs. Coverage
      1. 12.3.1. Oversized Coverage Cells
      2. 12.3.2. Physical Environment
    4. 12.4. Voice vs. Data
    5. 12.5. Performance
    6. 12.6. Weather
    7. 12.7. Summary
    8. 12.8. Exam Essentials
    9. 12.9. Key Terms
    10. 12.10. Review Questions
    11. 12.11. Answers to Review Questions
  21. 13. Network Security Architecture
    1. 13.1. 802.11 Security Basics
      1. 13.1.1. Data Privacy
      2. 13.1.2. Authentication, Authorization, and Accounting (AAA)
      3. 13.1.3. Segmentation
      4. 13.1.4. Monitoring and Policy
    2. 13.2. Legacy 802.11 Security
      1. 13.2.1. Legacy Authentication
      2. 13.2.2. Static WEP Encryption
      3. 13.2.3. MAC Filters
      4. 13.2.4. SSID Cloaking
    3. 13.3. Robust Security
      1. 13.3.1. Robust Security Network (RSN)
      2. 13.3.2. Authentication and Authorization
      3. 13.3.3. 802.1X/EAP Framework
      4. 13.3.4. EAP Types
      5. 13.3.5. Dynamic Encryption-Key Generation
      6. 13.3.6. 4-Way Handshake
      7. 13.3.7. WPA/WPA2-Personal
      8. 13.3.8. TKIP Encryption
      9. 13.3.9. CCMP Encryption
    4. 13.4. Segmentation
      1. 13.4.1. VLANs
      2. 13.4.2. RBAC
    5. 13.5. Infrastructure Security
      1. 13.5.1. Physical Security
      2. 13.5.2. Interface Security
    6. 13.6. VPN Wireless Security
      1. 13.6.1. Layer 3 VPNs
    7. 13.7. Summary
    8. 13.8. Exam Essentials
    9. 13.9. Key Terms
    10. 13.10. Review Questions
    11. 13.11. Answers to Review Questions
  22. 14. Wireless Attacks, Intrusion Monitoring, and Policy
    1. 14.1. Wireless Attacks
      1. 14.1.1. Rogue Wireless Devices
      2. 14.1.2. Peer-to-Peer Attacks
      3. 14.1.3. Eavesdropping
      4. 14.1.4. Encryption Cracking
      5. 14.1.5. Authentication Attacks
      6. 14.1.6. MAC Spoofing
      7. 14.1.7. Management Interface Exploits
      8. 14.1.8. Wireless Hijacking
      9. 14.1.9. Denial of Service (DoS)
      10. 14.1.10. Vendor-Specific Attacks
      11. 14.1.11. Social Engineering
    2. 14.2. Intrusion Monitoring
      1. 14.2.1. Wireless Intrusion Detection System (WIDS)
      2. 14.2.2. Wireless Intrusion Prevention System (WIPS)
      3. 14.2.3. Mobile WIDS
      4. 14.2.4. Spectrum Analyzer
    3. 14.3. Wireless Security Policy
      1. 14.3.1. General Security Policy
      2. 14.3.2. Functional Security Policy
      3. 14.3.3. Legislative Compliance
      4. 14.3.4. 802.11 Wireless Policy Recommendations
    4. 14.4. Summary
    5. 14.5. Exam Essentials
    6. 14.6. Key Terms
    7. 14.7. Review Questions
    8. 14.8. Answers to Review Questions
  23. 15. Radio Frequency Site Survey Fundamentals
    1. 15.1. WLAN Site Survey Interview
      1. 15.1.1. Customer Briefing
      2. 15.1.2. Business Requirements
      3. 15.1.3. Capacity and Coverage Requirements
      4. 15.1.4. Existing Wireless Network
      5. 15.1.5. Infrastructure Connectivity
      6. 15.1.6. Security Expectations
      7. 15.1.7. Guest Access
    2. 15.2. Documents and Reports
      1. 15.2.1. Forms and Customer Documentation
      2. 15.2.2. Deliverables
      3. 15.2.3. Additional Reports
    3. 15.3. Vertical Market Considerations
      1. 15.3.1. Outdoor Surveys
      2. 15.3.2. Aesthetics
      3. 15.3.3. Government
      4. 15.3.4. Education
      5. 15.3.5. Healthcare
      6. 15.3.6. Hotspots
      7. 15.3.7. Retail
      8. 15.3.8. Warehouses
      9. 15.3.9. Manufacturing
      10. 15.3.10. Multitenant Buildings
    4. 15.4. Summary
    5. 15.5. Exam Essentials
    6. 15.6. Key Terms
    7. 15.7. Review Questions
    8. 15.8. Answers to Review Questions
  24. 16. Site Survey Systems and Devices
    1. 16.1. Site Survey Defined
      1. 16.1.1. Mandatory Spectrum Analysis
      2. 16.1.2. Mandatory Coverage Analysis
      3. 16.1.3. AP Placement and Configuration
      4. 16.1.4. Optional Application Analysis
    2. 16.2. Site Survey Tools
      1. 16.2.1. Indoor Site Survey Tools
      2. 16.2.2. Outdoor Site Survey Tools
    3. 16.3. Coverage Analysis
      1. 16.3.1. Manual
      2. 16.3.2. Assisted
      3. 16.3.3. Predictive
      4. 16.3.4. Self-Organizing Wireless LANs
    4. 16.4. Summary
    5. 16.5. Exam Essentials
    6. 16.6. Key Terms
    7. 16.7. Review Questions
    8. 16.8. Answers to Review Questions
  25. 17. Power over Ethernet (PoE)
    1. 17.1. History of PoE
      1. 17.1.1. Nonstandard PoE
      2. 17.1.2. IEEE 802.3af
      3. 17.1.3. IEEE Std. 802.3-2005, Clause 33
      4. 17.1.4. IEEE 802.3at
    2. 17.2. PoE Devices (Overview)
      1. 17.2.1. Powered Device (PD)
      2. 17.2.2. Power-Sourcing Equipment (PSE)
      3. 17.2.3. Endpoint PSE
      4. 17.2.4. Midspan PSE
      5. 17.2.5. Power-Sourcing Equipment Pin Assignments
    3. 17.3. Planning and Deploying PoE
      1. 17.3.1. Power Planning
      2. 17.3.2. Redundancy
    4. 17.4. Summary
    5. 17.5. Exam Essentials
    6. 17.6. Key Terms
    7. 17.7. Review Questions
    8. 17.8. Answers to Review Questions
  26. 18. High Throughput (HT) and 802.11n
    1. 18.1. 802.11n History
      1. 18.1.1. 802.11n Draft Amendment
      2. 18.1.2. Wi-Fi Alliance Certification
    2. 18.2. MIMO
      1. 18.2.1. Radio Chains
      2. 18.2.2. Spatial Multiplexing (SM)
      3. 18.2.3. MIMO Diversity
      4. 18.2.4. Transmit Beamforming (TxBF)
    3. 18.3. HT Channels
      1. 18.3.1. 20 MHz Non-HT and HT Channels
      2. 18.3.2. 40 MHz Channels
      3. 18.3.3. Guard Interval (GI)
      4. 18.3.4. Modulation and Coding Scheme (MCS)
    4. 18.4. HT PHY
      1. 18.4.1. Non-HT Legacy
      2. 18.4.2. HT Mixed
      3. 18.4.3. HT Greenfield
    5. 18.5. HT MAC
      1. 18.5.1. A-MSDU
      2. 18.5.2. A-MPDU
      3. 18.5.3. MTBA
      4. 18.5.4. RIFS
      5. 18.5.5. HT Power Management
    6. 18.6. HT Operation
      1. 18.6.1. 20/40 Channel Operation
      2. 18.6.2. HT Protection Modes (0–3)
      3. 18.6.3. Dual-CTS Protection
      4. 18.6.4. Phased Coexistence Operation (PCO)
    7. 18.7. Summary
    8. 18.8. Exam Essentials
    9. 18.9. Key Terms
    10. 18.10. Review Questions
    11. 18.11. Answers to Review Questions
  27. A. About the Companion CD
    1. A.1. What You'll Find on the CD
      1. A.1.1. Sybex Test Engine
      2. A.1.2. Electronic Flashcards
    2. A.2. System Requirements
    3. A.3. Using the CD
    4. A.4. Troubleshooting
      1. A.4.1. Customer Care
  28. B. Abbreviations, Acronyms, and Regulations
    1. B.1. Certifications
    2. B.2. Organizations and Regulations
    3. B.3. Measurements
    4. B.4. Technical Terms
    5. B.5. Power Regulations
      1. B.5.1. 2.4 GHz ISM Point-to-Multipoint (PtMP) Communications
      2. B.5.2. 5 GHz UNII Point-to-Multipoint (PtMP) Communications
      3. B.5.3. 2.4 GHz ISM Point-to-Point (PtP) Communications
      4. B.5.4. 5 GHz UNII Point-to-Point (PtP) Communications
  29. Glossary

Product information

  • Title: CWNA®: Certified Wireless Network Administrator Official Study Guide
  • Author(s): David D. Coleman, David A. Westcott
  • Release date: April 2009
  • Publisher(s): Sybex
  • ISBN: 9780470438909