Księgarnia naukowa
English Polski
Dostęp on-line

Książki

0.00 PLN
Schowek (0) 
Schowek jest pusty
CWNA Certified Wireless Network Administrator Study Guide: Exam CWNA-107

CWNA Certified Wireless Network Administrator Study Guide: Exam CWNA-107

Autorzy
Wydawnictwo John Wiley & Sons Inc
Data wydania 13/09/2018
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: Exam CWNA-107

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


Point Coordination Function 266


Hybrid Coordination Function 267


Wi-Fi Multimedia 269


Airtime Fairness 271


Summary 272


Exam Essentials 273


Review Questions 274


Chapter 9 802.11 MAC 279


Packets, Frames, and Bits 281


Data-Link Layer 282


Physical Layer 283


802.11 and 802.3 Interoperability 284


802.11 MAC Header 285


802.11 Frame Body 297


802.11 Trailer 298


802.11 State Machine 299


Management Frames 300


Control Frames 314


Data Frames 322


Power Management 326


Summary 331


Exam Essentials 331


Review Questions 333


Chapter 10 MIMO Technology: HT and VHT 339


MIMO 342


Multi-User MIMO 351


Channels 355


Guard Interval 361


256-QAM Modulation 363


802.11n/ac PPDUs 367


802.11n/ac MAC 369


HT/VHT Protection Mechanisms 378


Wi-Fi Alliance Certification 379


Summary 382


Exam Essentials 383


Review Questions 384


Chapter 11 WLAN Architecture 389


WLAN Client Devices 391


Management, Control, and Data Planes 402


WLAN Architecture 404


Specialty WLAN Infrastructure 417


Cloud Networking 426


Infrastructure Management 428


Application Programming Interface 433


Summary 436


Exam Essentials 436


Review Questions 438


Chapter 12 Power over Ethernet (PoE) 443


History of PoE 444


An Overview of PoE Devices 446


Planning and Deploying PoE 458


802.11ac and PoE 463


Summary 465


Exam Essentials 465


Review Questions 466


Chapter 13 WLAN Design Concepts 471


WLAN Coverage Design 473


Roaming Design 479


Channel Design 485


Capacity Design 504


Voice vs. Data 517


Dual 5 GHz and Software-Defined Radios 519


Physical Environment 522


Antennas 523


Outdoor Design 527


Summary 528


Exam Essentials 529


Review Questions 530


Chapter 14 Site Survey and Validation 535


WLAN Site Survey and Design Interview 537


Vertical Market Considerations 548


Legacy AP-on-a-Stick Survey 551


Hybrid Survey 560


Validation Survey 565


Site Survey Tools 569


Documents and Reports 574


Summary 579


Exam Essentials 579


Review Questions 581


Chapter 15 WLAN Troubleshooting 587


Five Tenets of WLAN Troubleshooting 589


Layer 1 Troubleshooting 595


Layer 2 Troubleshooting 602


Security Troubleshooting 614


Roaming Troubleshooting 627


Channel Utilization 631


Layers 3-7 Troubleshooting 633


WLAN Troubleshooting Tools 636


Summary 644


Exam Essentials 644


Review Questions 646


Chapter 16 Wireless Attacks, Intrusion Monitoring, and Policy 653


Wireless Attacks 654


Intrusion Monitoring 671


Wireless Security Policies 677


Summary 681


Exam Essentials 681


Review Questions 683


Chapter 17 802.11 Network Security Architecture 687


802.11 Security Basics 689


Legacy 802.11 Security 693


Robust Security 699


Traffic Segmentation 718


WPA3 721


VPN Wireless Security 722


Summary 725


Exam Essentials 726


Review Questions 727


Chapter 18 Bring Your Own Device (BYOD) and Guest Access 731


Mobile Device Management 734


Self-Service Device Onboarding for Employees 748


Guest WLAN Access 751


Hotspot 2.0 and Passpoint 765


Network Access Control 770


Summary 776


Exam Essentials 777


Review Questions 779


Chapter 19 802.11ax: High Efficiency (HE) 783


HE Overview 784


Multi-User 787


OFDMA 788


MU-MIMO 799


BSS Color 800


Target Wake Time 805


Additional 802.11ax PHY and MAC Capabilities 806


802.11ax Design Considerations 811


Summary 812


Review Questions 814


Chapter 20 WLAN Deployment and Vertical Markets 815


Deployment Considerations for Commonly Supported


WLAN Applications and Devices 817


Corporate Data Access and End-User Mobility 821


Network Extension to Remote Areas 822


Bridging: Building-to-Building Connectivity 823


Wireless ISP: Last-Mile Data Delivery 823


Small Office/Home Office 824


Mobile Office Networking 825


Branch Offices 825


Educational/Classroom Use 826


Industrial: Warehousing and Manufacturing 827


Retail 828


Healthcare 829


Municipal Networks 830


Hotspots: Public Network Access 830


Stadium Networks 832


Transportation Networks 833


Law Enforcement Networks 833


First-Responder Networks 834


Managed Service Providers 835


Fixed Mobile Convergence 835


WLAN and Health 836


Internet of Things 836


WLAN Vendors 837


Summary 840


Exam Essentials 840


Review Questions 841


Appendix A Answers to Review Questions 845


Chapter 1: Overview of Wireless Standards, Organizations, and Fundamentals 846


Chapter 2: IEEE 802.11 Standard and Amendments 847


Chapter 3: Radio Frequency Fundamentals 850


Chapter 4: Radio Frequency Components, Measurements, and Mathematics 852


Chapter 5: Radio Frequency Signal and Antenna Concepts 854


Chapter 6: Wireless Networks and Spread Spectrum Technologies 856


Chapter 7: Wireless LAN Topologies 858


Chapter 8: 802.11 Medium Access 860


Chapter 9: 802.11 MAC 863


Chapter 10: MIMO Technology: HT and VHT 865


Chapter 11: WLAN Architecture 868


Chapter 12: Power over Ethernet (PoE) 870


Chapter 13: WLAN Design Concepts 872


Chapter 14: Site Survey and Validation 876


Chapter 15: WLAN Troubleshooting 878


Chapter 16: Wireless Attacks, Intrusion Monitoring, and Policy 881


Chapter 17: 802.11 Network Security Architecture 884


Chapter 18: Bring Your Own Device (BYOD) and Guest Access 886


Chapter 19: 802.11ax: High Efficiency (HE) 889


Chapter 20: WLAN Deployment and Vertical Markets 890


Appendix B Abbreviations and Acronyms 893


Certifications 894


Organizations and Regulations 894


Measurements 895


Technical Terms 896


Index 909


Table of Exercises


Exercise 3.1 Visual Demonstration of Absorption 88


Exercise 3.2 Visual Demonstration of Multipath and Phase 94


Exercise 4.1 Step-by-Step Use of the Rule of 10s and 3s 116


Exercise 4.2 Rule of 10s and 3s Example 118


Exercise 4.3 Link Budget and Fade Margin 132


Exercise 9.1 Viewing Beacon Frames 302


Exercise 9.2 Understanding Probe Requests and Probe Responses 306


Exercise 9.3 Using Open System Authentication 308


Exercise 9.4 Understanding Association 308


Exercise 9.5 Understanding Reassociation 312


Exercise 9.6 Viewing Action Frames 314


Exercise 9.7 Understanding Acknowledgment 316


Exercise 9.8 Using Data Frames 325


Exercise 14.1 Calculating Cable Loss 574


Exercise 17.1 Using Unencrypted and Encrypted Data Frames 691


Exercise 17.2 802.1X/EAP and the 4-Way Handshake Process 714

Polecamy również książki

Strony www Białystok Warszawa
801 777 223