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Index
Cover
Title Page
Copyright
Publisher's Note
Acknowledgments
About the Authors
Foreword
Introduction
CWNA: Certified Wireless Network Administrator Exam (CWNA-106) Objectives
Assessment Test
Chapter 1: Overview of Wireless Standards, Organizations, and Fundamentals
History of WLAN
Standards Organizations
Core, Distribution, and Access
Communications Fundamentals
Summary
Exam Essentials
Review Questions
Chapter 2: Radio Frequency Fundamentals
What Is a Radio Frequency Signal?
Radio Frequency Characteristics
Radio Frequency Behaviors
Summary
Exam Essentials
Review Questions
Chapter 3: Radio Frequency Components, Measurements, and Mathematics
RF Components
Units of Power and Comparison
RF Mathematics
Summary
Exam Essentials
Review Questions
Chapter 4: Radio Frequency Signal and Antenna Concepts
Azimuth and Elevation Charts (Antenna Radiation Envelopes)
Interpreting Polar Charts
Beamwidth
Antenna Types
Visual Line of Sight
RF Line of Sight
Fresnel Zone
Earth Bulge
Antenna Polarization
Antenna Diversity
Multiple-Input, Multiple-Output
Antenna Connection and Installation
Antenna Accessories
Regulatory Compliance
Summary
Exam Essentials
Review Questions
Chapter 5: IEEE 802.11 Standards
Original IEEE 802.11 Standard
IEEE 802.11-2007 Ratified Amendments
IEEE Std 802.11-2012
Post-2012 Ratified Amendments
IEEE 802.11 Draft Amendments
Defunct Amendments
802.11m Task Group
Summary
Exam Essentials
Review Questions
Chapter 6: Wireless Networks and Spread Spectrum Technologies
Industrial, Scientific, and Medical Bands
Unlicensed National Information Infrastructure Bands
3.6 GHz Band
4.9 GHz Band
Future Wi-Fi Frequencies
Narrowband and Spread Spectrum
Frequency Hopping Spread Spectrum
Direct Sequence Spread Spectrum
Packet Binary Convolutional Code
Orthogonal Frequency Division Multiplexing
2.4 GHz Channels
Throughput vs. Bandwidth
Communication Resilience
Summary
Exam Essentials
Review Questions
Chapter 7: Wireless LAN Topologies
Wireless Networking Topologies
802.11 Topologies
802.11 Configuration Modes
Summary
Exam Essentials
Review Questions
Chapter 8: 802.11 Medium Access
CSMA/CA vs. CSMA/CD
Collision Detection
Distributed Coordination Function
Point Coordination Function
Hybrid Coordination Function
Block Acknowledgment
Wi-Fi Multimedia
Airtime Fairness
Summary
Exam Essentials
Review Questions
Chapter 9: 802.11 MAC Architecture
Packets, Frames, and Bits
Data-Link Layer
Physical Layer
802.11 and 802.3 Interoperability
Three 802.11 Frame Types
Beacon Management Frame
Authentication
Association
ACK Frame
Fragmentation
Protection Mechanism
Data Frames
Power Management
Summary
Exam Essentials
Review Questions
Chapter 10: WLAN Architecture
Wireless LAN Client Devices
Management, Control, and Data Planes
WLAN Architecture
Specialty WLAN Infrastructure
Summary
Exam Essentials
Review Questions
Chapter 11: WLAN Deployment and Vertical Markets
Deployment Considerations for Commonly Supported WLAN Applications and Devices
Corporate Data Access and End-User Mobility
Network Extension to Remote Areas
Bridging: Building-to-Building Connectivity
Wireless ISP: Last-Mile Data Delivery
Small Office/Home Office
Mobile Office Networking
Branch Offices
Educational/Classroom Use
Industrial: Warehousing and Manufacturing
Retail
Healthcare: Hospitals and Offices
Municipal Networks
Hotspots: Public Network Access
Stadium Networks
Transportation Networks
Law Enforcement Networks
First-Responder Networks
Fixed Mobile Convergence
WLAN and Health
WLAN Vendors
Summary
Exam Essentials
Review Questions
Chapter 12: WLAN Troubleshooting and Design
Layer 2 Retransmissions
802.11 Coverage Considerations
Capacity vs. Coverage
Voice vs. Data
Performance
Weather
Summary
Exam Essentials
Review Questions
Chapter 13: 802.11 Network Security Architecture
802.11 Security Basics
Legacy 802.11 Security
Robust Security
Traffic Segmentation
Infrastructure Security
VPN Wireless Security
Guest WLAN Security
Summary
Exam Essentials
Review Questions
Chapter 14: Wireless Attacks, Intrusion Monitoring, and Policy
Wireless Attacks
Intrusion Monitoring
Wireless Security Policy
Summary
Exam Essentials
Review Questions
Chapter 15: Radio Frequency Site Survey Fundamentals
WLAN Site Survey Interview
Documents and Reports
Vertical Market Considerations
Summary
Exam Essentials
Review Questions
Chapter 16: Site Survey Systems and Devices
Site Survey Defined
Site Survey Tools
Coverage Analysis
Summary
Exam Essentials
Review Questions
Chapter 17: Power over Ethernet (PoE)
History of PoE
An Overview of PoE Devices
Planning and Deploying PoE
802.11n or 802.11ac and PoE
Summary
Exam Essentials
Review Questions
Chapter 18: 802.11n
802.11n-2009 Amendment
Wi-Fi Alliance Certification
MIMO
HT Channels
HT PHY
HT MAC
HT Operation
Summary
Exam Essentials
Review Questions
Chapter 19: Very High Throughput (VHT) and 802.11ac
802.11ac-2013 Amendment
5 GHz Only
20, 40, 80, and 160 MHz Channels
256-QAM Modulation
Modulation and Coding Schemes
Single-User MIMO
802.11ac Data Rates
VHT MAC
Beamforming
Quality of Service
Infrastructure Requirements
802.11ac in a SOHO or Home
Wi-Fi Alliance Certification
Summary
Exam Essentials
Review Questions
Chapter 20: Bring Your Own Device (BYOD)
Mobile Device Management
Guest WLAN Access
Network Access Control (NAC)
Summary
Exam Essentials
Review Questions
Appendix A: Answers to Review Questions
Chapter 1: Overview of Wireless Standards, Organizations, and Fundamentals
Chapter 2: Radio Frequency Fundamentals
Chapter 3: Radio Frequency Components, Measurements, and Mathematics
Chapter 4: Radio Frequency Signal and Antenna Concepts
Chapter 5: IEEE 802.11 Standards
Chapter 6: Wireless Networks and Spread Spectrum Technologies
Chapter 7: Wireless LAN Topologies
Chapter 8: 802.11 Medium Access
Chapter 9: 802.11 MAC Architecture
Chapter 10: WLAN Architecture
Chapter 11: WLAN Deployment and Vertical Markets
Chapter 12: WLAN Troubleshooting and Design
Chapter 13: 802.11 Network Security Architecture
Chapter 14: Wireless Attacks, Intrusion Monitoring, and Policy
Chapter 15: Radio Frequency Site Survey Fundamentals
Chapter 16: Site Survey Systems and Devices
Chapter 17: Power over Ethernet (PoE)
Chapter 18: 802.11n
Chapter 19: Very High Throughput (VHT) and 802.11ac
Chapter 20: Bring Your Own Device (BYOD)
Appendix B: Abbreviations and Acronyms
Certifications
Organizations and Regulations
Measurements
Technical Terms
Appendix C: About the Additional Study Tools
Additional Study Tools
System Requirements
Using the Study Tools
Troubleshooting
Free Online Study Tools
End User License Agreement
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