Newly updated edition of this top-selling CWNA study guide
Sybex is the official publisher for CWNP, Inc., the organization behind the the CWNA certification. The new edition of Sybex's top-selling CWNA Study Guide covers the latest CWNA Exam, PW0-105. If you're preparing for the exam, you'll find full coverage of radio frequency (RF) technologies, as well as IEEE 802.11 regulations and standards, protocols and devices, network security, and much more. This detailed book not only covers all exam objectives, it also includes practical chapter review questions and hands-on exercises. The book's website offers additional practice exams and flashcards, demo software, and more. Prepares you for Exam PW0-105, the new CWNA exam administered by the Certified Wireless Network Professional, Inc. Covers all exam objectives, including radio frequency (RF) technologies and IEEE 802.11 regulations and standards, protocols and devices, network implementation, network security, and RF site surveyingIncludes practical examples and review questions to reinforce learningDiscusses the latest information on wireless trends, protocols, and standards--helpful whether you're preparing for the exam or notProvides additional practice exams, electronic flashcards, demo software, and more from the book's accompanying website
CWNA certification is the foundation for any professional who uses wireless networks--and a springboard to more advanced wireless certifications. Get started today with this detailed CWNA prep guide.
Foreword xxvii
Introduction xxix
Assessment Test xlviii
Chapter 1 Overview of Wireless Standards, Organizations, and Fundamentals 1
History of WLAN 2
Standards Organizations 4
Federal Communications Commission 5
International Telecommunication Union Radiocommunication Sector 6
Institute of Electrical and Electronics Engineers 7
Internet Engineering Task Force 8
Wi-Fi Alliance 10
International Organization for Standardization 14
Core, Distribution, and Access 15
Communications Fundamentals 17
Understanding Carrier Signals 17
Understanding Keying Methods 20
Summary 24
Exam Essentials 25
Review Questions 26
Chapter 2 Radio Frequency Fundamentals 31
What Is a Radio Frequency Signal? 33
Radio Frequency Characteristics 34
Wavelength 34
Frequency 38
Amplitude 40
Phase 41
Radio Frequency Behaviors 42
Wave Propagation 42
Absorption 43
Reflection 44
Scattering 46
Refraction 46
Diffraction 47
Loss (Attenuation) 49
Free Space Path Loss 51
Multipath 53
Gain (Amplification) 57
Summary 58
Exam Essentials 58
Review Questions 59
Chapter 3 Radio Frequency Components, Measurements, and Mathematics 63
RF Components 65
Transmitter 65
Antenna 66
Receiver 67
Intentional Radiator (IR) 67
Equivalent Isotropically Radiated Power 67
Units of Power and Comparison 69
Watt 70
Milliwatt (mW) 70
Decibel (dB) 71
dBi 73
dBd 74
dBm 74
Inverse Square Law 76
RF Mathematics 77
Rule of 10s and 3s 77
Noise Floor 87
Signal-to-Noise Ratio (SNR) 87
Received Signal Strength Indicator 88
Link Budget 92
Fade Margin/System Operating Margin 95
Summary 97
Exam Essentials 98
Review Questions 99
Chapter 4 Radio Frequency Signal and Antenna Concepts 103
Azimuth and Elevation Charts
(Antenna Radiation Envelopes) 105
Interpreting Polar Charts 108
Beamwidth 110
Antenna Types 113
Omnidirectional Antennas 113
Semidirectional Antennas 116
Highly Directional Antennas 118
Sector Antennas 120
Antenna Arrays 122
Visual Line of Sight 124
RF Line of Sight 124
Fresnel Zone 125
Earth Bulge 129
Antenna Polarization 130
Antenna Diversity 131
Multiple-Input Multiple-Output 132
MIMO Antennas 132
Indoor MIMO Antennas 133
Outdoor MIMO Antennas 133
Antenna Connection and Installation 134
Voltage Standing Wave Ratio 134
Signal Loss 135
Antenna Mounting 136
Antenna Accessories 141
Cables 141
Connectors 142
Splitters 143
Amplifiers 143
Attenuators 144
Lightning Arrestors 145
Grounding Rods and Wires 147
Summary 148
Exam Essentials 148
Review Questions 149
Chapter 5 IEEE 802.11 Standards 153
Original IEEE 802.11 Standard 156
IEEE 802.11-2007 Ratified Amendments 158
802.11b 159
802.11a 160
802.11g 161
802.11d 164
802.11h 165
802.11i 167
802.11j 168
802.11e 168
Post 2007 Ratified Amendments 169
802.11r-2008 170
802.11k-2008 170
802.11y-2008 171
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