Cwts, Cws, And Cwt Complete Study Guide - Bartz Robert J. | Libro Sybex 12/2017 -

home libri books ebook dvd e film top ten sconti 0 Carrello

Torna Indietro

bartz robert j. - cwts, cws, and cwt complete study guide

CWTS, CWS, and CWT Complete Study Guide

Exams PW0–071, CWS–100, CWT–100

Disponibilità: solo 2 copie disponibili, compra subito!

Se ordini entro 6 ore e 15 minuti, consegna garantita in 48 ore lavorative
scegliendo le spedizioni Express

€ 50,00
€ 42,50

Questo prodotto usufruisce delle SPEDIZIONI GRATIS
selezionando l'opzione Corriere Veloce in fase di ordine.

Pagabile anche con App18 Bonus Cultura e Carta Docenti

Facebook Twitter Aggiungi commento

Spese Gratis


Lingua: Inglese
Editore: Sybex
Pubblicazione: 12/2017

Note Editore

Covers 100% of exam objectives, including hardware and software, radio frequency fundamentals, surveying and installation, support, troubleshooting, security, and much more....
Includes online interactive learning environment with:

+ 2 custom practice exams
+ More than 200 Electronic Flashcards
+ Searchable key term glossary

The Only Complete, Comprehensive Guide to Preparing for the CWTS, CWS, or CWT Exams

The CWTS certification is an entry–level wireless certification appropriate for sales, marketing, help desk, and support level Wi–Fi professionals who want to become familiar with IEEE 802.11 terminology. The CWS (specialist) certification is geared toward those who need to be able to explain basic features and capabilities of IEEE 802.11 wireless networking and can assist in selecting the best equipment for a deployment or communicate well with those who are responsible for such decisions. The CWT (technician) certification is intended for those responsible for installation and initial configuration of WLAN hardware.

This CWTS, CWS, and CWT Complete Study Guide covers 100% of the exam objectives, along with vital study tools that enable you to face the exam with confidence. A pre–assessment test helps you identify what you know and what you need to learn, review questions allow you to test your knowledge at the end of each chapter, and hands–on exercises show you how to apply your skills. And with the exclusive Sybex online learning environment, you'll study more efficiently and be fully prepared.

Coverage of 100% of all exam objectives in this Study Guide means you'll be ready for:

  • Networking Fundamentals and Wireless LAN Standards
  • Infrastructure and Client Devices
  • RF Fundamentals
  • Antenna and Modulation Technology
  • Security Fundamentals
  • Design and Troubleshooting
  • Mobile Device Management

Interactive learning environment

Take your exam prep to the next level with Sybex's superior interactive online study tools. To access our learning environment, simply visit, register your book to get in your unique PIN, and instantly gain a year of FREE access to:

  • Interactive test bank with 2 custom practice exams. Practice exams help you identify areas where further review is needed. Get more than 90% of the answers correct, and you're ready to take the certification exam. 120 questions total!
  • More than 200 Electronic Flashcards to reinforce learning and last–minute prep before the exam.
  • Comprehensive glossary in PDF format gives you instant access to the key terms so you are fully prepared.


The Certified Wireless Network Professional (CWNP) program is the IT industry standard for vendor neutral enterprise Wi–Fi training and certification. CWNP offers many certifications including CWTS: Certified Wireless Technology Specialist, CWS: Certified Wireless Specialist, and CWT: Certified Wireless Technician.


Introduction xvii

Assessment Test xl

Chapter 1 Computer Networking Fundamentals 1

Network Types 2

The Local Area Network 3

The Wide Area Network 3

The Metropolitan Area Network 4

The Campus Area Network 5

The Personal Area Network 6

Network Topologies 7

The Bus Topology 8

The Ring Topology 9

The Star Topology 10

The Mesh Topology 10

Ad Hoc Connections 12

Point–to–Point Connections 13

Point–to–Multipoint Connections 13

The OSI Model 14

Layer 1 The Physical Layer 15

Layer 2 The Data Link Layer 16

Layer 3 The Network Layer 17

Layer 4 The Transport Layer 17

Layer 5 The Session Layer 18

Layer 6 The Presentation Layer 18

Layer 7 The Application Layer 18

How the Layers Work Together 18

Peer–Layer Communication 19

Data Encapsulation 20

Device Addressing 21

Physical Addressing 22

Logical Addressing 23

Network Address Translation 25

Summary 27

Exam Essentials 28

Review Questions 30

Chapter 2 Wireless Local Area Networking, Standards, and Certifications 35

The Wireless Computer Network 36

The Wireless Personal Area Network 36

The Wireless Local Area Network 37

The Wireless Metropolitan Area Network 37

The Wireless Wide Area Network 38

Building–to–Building Connectivity Using Wireless LAN

Technology 38

Wireless Point–to–Point Connections 38

Wireless Point–to–Multipoint Connections 39

Radio Frequency Regulatory Domain Governing

Bodies and Local Regulatory Authorities 40

United States: Federal Communications Commission 41

Europe: European Telecommunications

Standards Institute 42

The IEEE 42

The IEEE 802.11 Standard 43

The IEEE 802.11a Amendment 44

The IEEE 802.11b Amendment 45

The IEEE 802.11g Amendment 46

The IEEE 802.11n Amendment 49

The IEEE 802.11ac Amendment 50

Summary of IEEE 802.11 Communications Standards and Amendments 52

Additional IEEE 802.11 Amendments 53

Interoperability Certifications 55

The Wi–Fi Alliance 56

The Wi–Fi Protected Access Certification 56

The Wi–Fi Protected Access 2 Certification 57

The Wi–Fi Multimedia Certification 58

Wi–Fi Multimedia Power Save Certification 58

Wi–Fi Protected Setup Certification Overview 58

Common Wireless Local Area Network Deployment Scenarios 59

Small Office/Home Office 60

Enterprise Deployments: Corporate Data Access and End–User Mobility 61

Extension of Existing Networks into Remote Locations 62

Public Wireless Hotspots (Public Wi–Fi) and Hospitality 62

Office (Carpeted) Deployments 64

Educational Institution Deployments 64

Industrial Deployments 67

Healthcare Deployments 67

Last–Mile Data Delivery: Wireless ISP 69

High–Density Deployments Including Conference Centers 70

Municipal, Law Enforcement, and Transportation Networks 71

Summary 71

Exam Essentials 72

Review Questions 73

Chapter 3 Infrastructure and Client Devices Used with Wireless Networking 77

The Wireless Access Point 80

Autonomous Access Points 82

Controller–Managed Access Points 91

Cloud–Managed Access Points 93

Wireless Branch Router/Remote Access Point 94

Wireless Mesh 95

Wireless Bridges 96

Wireless Repeaters/Range Extenders 97

Wireless LAN Controllers and Cloud–Managed Architectures 98

Centralized Administration 99

Virtual Local Area Networks 99

Power over Ethernet Capability 99

Improved Mobile Device Transition 100

Wireless LAN Profiles and Virtual Wireless LANs 100

Advanced Security Features 100

Captive Web Portals 100

Built–in RADIUS Services 101

Predictive Modeling Site Survey Tools 101

Radio Frequency Spectrum Management 101

Firewalls 101

Quality of Service 102

Infrastructure Device Redundancy 102

Wireless Intrusion Prevention System 102

Direct and Distributed Access Point Connectivity 102

Layer 2 and Layer 3 Access Point Connectivity 102

Distributed and Centralized Data Forwarding 103

Power over Ethernet 104

Power Sourcing Equipment 105

Powered Devices and Classification Signatures 106

Benefits of PoE 107

Radio Hardware Used with Wireless LAN Technology 108

USB 1.0, USB 1.1, USB 2.0, and USB 3.0 108

Features of USB 109

Installation and Configuration of USB Devices 110

Peripheral Component Interconnect 112

Features of PCI 112

Installation and Configuration of PCI Cards 113

Mini–PCI, Mini–PCIe, and Half Mini–PCIe 115

Features of Mini–PCI, Mini–PCIe, and Half Mini–PCIe Cards 116

Installation and Configuration of Mini–PCI, Full Mini–PCIe, and Half Mini–PCIe Cards 117

Wireless Workgroup Bridges 118

Features of Wireless Workgroup Bridges 119

Installation and Configuration of Wireless Workgroup Bridges 120

Client Device Drivers 121

Client Utility Software 121

Manufacturer–Specific Client Utilities 122

Third–Party Client Utilities 123

Summary 124

Exam Essentials 125

Review Questions 126

Chapter 4 Radio Frequency Fundamentals for Wireless Networking 131

Understanding Radio Frequency 133

Wavelength in Wireless LANs 136

Frequency in Wireless LANs 137

Amplitude in Wireless LANs 138

Phase in Wireless LANs 138

Radio Frequency Used in Wireless LANs 139

Wireless LAN Coverage and Capacity 143

Wireless LAN Coverage 144

Wireless LAN Capacity 146

Radio Frequency Channel Reuse and Device Co–location 149

Radio Frequency Range and Speed 150

Line of Sight in Wireless Networking 150

Wi–Fi and Non Wi–Fi Interference 152

Adjacent Channel and Co–channel Interference 152

WLAN/WPAN Interference 154

Environment: Radio Frequency Behavior 155

Basic Units of Radio Frequency Measurement 158

Absolute Measurements of Radio Frequency Power 158

Relative Measurements of Radio Frequency Power 160

Radio Frequency Signal Measurements 162

Summary 166

Exam Essentials 167

Review Questions 168

Contents ix

Chapter 5 Antenna Technology for Wireless Networking 171

Basic Radio Frequency Antenna Concepts 172

Radio Frequency Lobes 173

Antenna Beamwidth 173

Antenna Gain 176

Passive Gain 176

Active Gain 178

Antenna Polarization 178

Wireless LAN Antenna Types 180

Omnidirectional Antennas 180

Omnidirectional Antenna Specifications 182

Semidirectional Antennas 184

Highly Directional Antennas 193

Highly Directional Antenna Specifications 194

Radio Frequency Cables and Connectors 195

Radio Frequency Cable Types 196

Radio Frequency Cable Length 196

Radio Frequency Cable Cost 197

Impedance and VSWR 197

Radio Frequency Connectors 198

Factors in Antenna Installation 199

Addressing the Effects of Earth Curvature 199

Antenna Placement 199

Minimizing the Effects of Multipath Using Antenna Diversity 200

Combating Effects of Wind and Lightning in

Wireless LAN Installations 201

Lightning Arrestors 202

Grounding Rods 203

Installation Safety 203

Antenna Mounting 203



Robert J. Bartz, CWNE, CWNT, is a technical trainer and consultant with more than 26 years of experience in computer networking technology. He has been involved with the CWNP program since its inception, and has taught vendor–neutral IEEE 802.11 wireless LAN technology to thousands of people globally. Robert is also the author of the first two editions of CWTS: Certified Wireless Technology Specialist Official Study Guide.

Altre Informazioni

ISBN: 9781119385035
Condizione: Nuovo
Dimensioni: 234 x 30.17 x 188 mm Ø 990 gr
Formato: Brossura
Pagine Arabe: 600

Utilizziamo i cookie di profilazione, anche di terze parti, per migliorare la navigazione, per fornire servizi e proporti pubblicità in linea con le tue preferenze. Se vuoi saperne di più o negare il consenso a tutti o ad alcuni cookie clicca qui. Chiudendo questo banner o proseguendo nella navigazione acconsenti all’uso dei cookie.