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CWNA Certified Wireless Network Administrator Study Guide

CWNA Certified Wireless Network Administrator Study Guide

Wydawnictwo Sybex Inc.,U.S.
Data wydania 01/09/2018
Wydanie Pierwsze
Liczba stron 1024
Forma publikacji książka w miękkiej oprawie
Poziom zaawansowania Dla profesjonalistów, specjalistów i badaczy naukowych
Język angielski
ISBN 9781119425786
Kategorie WAP Technologia bezprzewodowa, Certyfikaty komputerowe, Computer networking & communications
254.00 PLN (z VAT)
$65.31 / €58.44 / £54.13 /
Produkt dostępny
Przesyłka w 2 dni
Do schowka

Opis książki

The bestselling CWNA study guide, updated for the latest exam The CWNA: Certified Wireless Network Administrator Study Guide is the ultimate preparation resource for the CWNA exam. Fully updated to align with the latest version of the exam, this book features expert coverage of all exam objectives to help you internalize essential information. A pre-assessment test reveals what you already know, allowing you to focus your study time on areas in need of review, while hands-on exercises allow you to practice applying CWNA concepts to real-world scenarios. Expert-led discussion breaks complex topics down into easily-digestible chucks to facilitate clearer understanding, and chapter review questions help you gauge your progress along the way. You also get a year of free access to the Sybex online interactive learning environment, which features additional resources and study aids including bonus practice exam questions. The CWNA exam tests your knowledge of regulations and standards, protocols and devices, network implementation, security, and RF site surveying. Thorough preparation gives you your best chance of passing, and this book covers it all with a practical focus that translates to real on-the-job skills. Study 100% of the objectives for Exam CWNA-107 Assess your practical skills with hands-on exercises Test your understanding with challenging chapter tests Access digital flashcards, white papers, bonus practice exams, and more The CWNA certification is a de facto standard for anyone working with wireless technology. It shows employers that you have demonstrated competence in critical areas, and have the knowledge and skills to perform essential duties that keep their wireless technology functioning and safe. The CWNA: Certified Wireless Network Administrator Study Guide gives you everything you need to pass the exam with flying colors.

CWNA Certified Wireless Network Administrator Study Guide

Spis treści

Foreword xxxi

Introduction xxxiii

Assessment Test lxiv

Chapter 1 Overview of Wireless Standards, Organizations, and Fundamentals 1

History of Wireless Local Area Networks 2

Standards Organizations 4

Core, Distribution, and Access 19

Communications Fundamentals 21

Summary 29

Exam Essentials 30

Review Questions 31

Chapter 2 IEEE 802.11 Standard and Amendments 35

Original IEEE 802.11 Standard 38

IEEE 802.11-2016 Ratified Amendments 39

Post 802.11-2016 Ratified Amendments 58

IEEE 802.11 Draft Amendments 58

Defunct Amendments 61

IEEE Task Group m 63

Summary 64

Exam Essentials 64

Review Questions 65

Chapter 3 Radio Frequency Fundamentals 69

What Is a Radio Frequency Signal? 71

Radio Frequency Characteristics 72

Radio Frequency Behaviors 80

Summary 96

Exam Essentials 96

Review Questions 97

Chapter 4 Radio Frequency Components, Measurements, and Mathematics 101

RF Components 104

Units of Power and Comparison 107

RF Mathematics 115

Summary 132

Exam Essentials 134

Review Questions 135

Chapter 5 Radio Frequency Signal and Antenna Concepts 139

Azimuth and Elevation Charts (Antenna Radiation Envelopes) 141

Interpreting Polar Charts 144

Beamwidth 147

Antenna Types 149

Visual Line of Sight 160

RF Line of Sight 160

Fresnel Zone 161

Earth Bulge 165

Antenna Polarization 166

Antenna Diversity 167

Multiple-Input, Multiple-Output 168

Antenna Connection and Installation 170

Antenna Accessories 178

Regulatory Compliance 184

Summary 185

Exam Essentials 185

Review Questions 186

Chapter 6 Wireless Networks and Spread Spectrum

Technologies 191

Narrowband and Spread Spectrum 193

Frequency-Hopping Spread Spectrum 196

Direct-Sequence Spread Spectrum 198

Orthogonal Frequency-Division Multiplexing 200

Industrial, Scientific, and Medical Bands 204

Unlicensed National Information Infrastructure Bands 206

3.6 GHz Band 209

4.9 GHz Band 209

Future Wi-Fi Frequencies 210

2.4 GHz Channels 211

5 GHz Channels 215

Adjacent, Nonadjacent, and Overlapping Channels 221

Throughput vs. Bandwidth 221

Communication Resilience 222

Summary 223

Exam Essentials 223

Review Questions 225

Chapter 7 Wireless LAN Topologies 229

Wireless Networking Topologies 230

802.11 Stations 233

802.11 Service Sets 237

802.11 Configuration Modes 248

Summary 250

Exam Essentials 250

Review Questions 251

Chapter 8 802.11 Medium Access 255


Collision Detection 257

Distributed Coordination Function 258


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