Księgarnia naukowa
English Polski
Dostęp on-line

Książki

0.00 PLN
Schowek (0) 
Schowek jest pusty
CWNA Certified Wireless Network Administrator Study Guide

CWNA Certified Wireless Network Administrator Study Guide

Autorzy
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
Ilość
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


CSMA/CA vs. CSMA/CD 256


Collision Detection 257


Distributed Coordination Function 258


P

Polecamy również książki

Strony www Białystok Warszawa
801 777 223