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CCNA Wireless 640-722 Official Cert GuideCCNA Wireless 640-722 Official Cert Guide from Cisco Press enables you to succeed on the Implementing Cisco Unified Wireless Networking Essentials (IUWNE) exam the first time and is the only self-study resource approved by Cisco. Best-selling author and expert instructor David Hucaby shares preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. This complete study package includesn A test-preparation routine proven to help you pass the examsn Do I Know This Already? quizzes, which enable you to decide how much time you need to spend on each sectionn Chapter-ending exercises, which help you drill on key concepts you must know thoroughlyn The powerful Pearson IT Certification Practice Test software, complete with hundreds of well reviewed, exam-realistic questions, customization options, and detailed performance reportsn A final preparation chapter, which guides you through tools and resources to help you craft your review and test-taking strategiesn Study plan suggestions and templates to help you organize and optimize your study timeWell regarded for its level of detail, study plans, assessment features, challenging review questions, and hands-on exercises, this official study guide helps you master the concepts and techniques you need to ensure exam success.David Hucaby, CCIE (R) No. 4594, is a network architect for the University of Kentucky, where he works with academic and healthcare networks based on the Cisco Unified Wireless Network products. David holds bachelor's and master's degrees in electrical engineering from the University of Kentucky. His Cisco Press titles include CCNP SWITCH Exam Certification Guide; Cisco LAN Switching Video Mentor; CCNP Security FIREWALL Exam Certification Guide; Cisco ASA, PIX, and FWSM Firewall Handbook, Second Edition; and Cisco Firewall Video Mentor.The official study guide helps you master all the topics on the CCNA Wireless 640-722 exam, including the following:n RF signals, modulation, and standardsn Antennasn WLAN topologies, configuration, and troubleshootingn Wireless APsn CUWN architecturen Controller configuration, discovery, and maintenancen Roamingn Client configurationn RRMn Wireless securityn Guest networksn WCS network managementn InterferenceCompanion CDThe CD contains 170 unique practice exam questions for the CCNA Wireless 640-722 exam in two highly realistic, interactive practice exams. Includes Exclusive Offer for 70% Off Premium Edition eBook and Practice Test170 Practice Exam Questions in Two Highly Realistic Sample Exams
Contents
Introduction xixChapter 1 RF Signals and Modulation 3"Do I Know This Already?" Quiz 3Foundation Topics 7Comparing Wired and Wireless Networks 7Understanding Basic Wireless Theory 8Understanding Frequency 10Understanding Phase 14Measuring Wavelength 14Understanding RF Power and dB 15Important dB Facts to Remember 17Comparing Power Against a Reference: dBm 19Measuring Power Changes Along the Signal Path 20Understanding Power Levels at the Receiver 23Carrying Data Over an RF Signal 24FHSS 26DSSS 271-Mbps Data Rate 282-Mbps Data Rate 295.5-Mbps Data Rate 3011-Mbps Data Rate 30OFDM 31Modulation Summary 32Exam Preparation Tasks 34Review All Key Topics 34Key Terms 34Chapter 2 RF Standards 37"Do I Know This Already?" Quiz 37Foundation Topics 41Regulatory Bodies 41ITU-R 41FCC 42ETSI 44Other Regulatory Bodies 45IEEE Standards Body 45802.11 Channel Use 47Channels in the 2.4-GHz ISM Band 47Channels in the 5-GHz U-NII Bands 49IEEE 802.11 Standards 51802.11-1997 52802.11b 52802.11g 52802.11a 54802.11n 55Channel Aggregation 57Spatial Multiplexing 58MAC Layer Efficiency 59Transmit Beam Forming (TxBF) 60Maximal-Ratio Combining 61802.11n Modulation and Coding Schemes 61Beyond 802.11n 62Wi-Fi Alliance 63Exam Preparation Tasks 64Review All Key Topics 64Define Key Terms 64Chapter 3 RF Signals in the Real World 67"Do I Know This Already?" Quiz 67Foundation Topics 70Interference 70Co-Channel Interference 70Neighboring Channel Interference 71Non-802.11 Interference 72Free Space Path Loss 72Mitigating the Effects of Free Space Path Loss 74Effects of Physical Objects 76Reflection 76Absorption 78Scattering 78Refraction 79Diffraction 80Fresnel Zones 80Exam Preparation Tasks 83Review All Key Topics 83Define Key Terms 83Chapter 4 Understanding Antennas 85"Do I Know This Already?" Quiz 85Foundation Topics 88Antenna Characteristics 88Radiation Patterns 88Gain 91Beamwidth 92Polarization 92Antenna Types 93Omnidirectional Antennas 94Directional Antennas 97Antenna Summary 101Adding Antenna Accessories 101Exam Preparation Tasks 103Review All Key Topics 103Define Key Terms 103Chapter 5 Wireless LAN Topologies 105"Do I Know This Already?" Quiz 105Foundation Topics 108Types of Wireless Networks 108Wireless LAN Topologies 109Basic Service Set 110Distribution System 112Extended Service Set 114Independent Basic Service Set 115Other Wireless Topologies 116Repeater 116Workgroup Bridge 117Outdoor Bridge 118Mesh Network 119Exam Preparation Tasks 120Review All Key Topics 120Define Key Terms 120Chapter 6 Understanding 802.11 Frame Types 123"Do I Know This Already?" Quiz 123802.11 Frame Format 126802.11 Frame Addressing 128Accessing the Wireless Medium 130Carrier Sense 131Collision Avoidance 132802.11 Frame Types 134Management Frames 134Control Frames 135Data Frames 136Client Housekeeping 136A Client Scans for APs 137A Client Joins a BSS 138A Client Leaves a BSS 139A Client Moves Between BSSs 140A Client Saves Power 142Exam Preparation Tasks 145Review All Key Topics 145Define Key Terms 145Chapter 7 Planning Coverage with Wireless APs 147"Do I Know This Already?" Quiz 147AP Cell Size 150Tuning Cell Size with Transmit Power 150Tuning Cell Size with Data Rates 152Adding APs to an ESS 153The Roaming Process 155WLAN Channel Layout 157Exam Preparation Tasks 161Review All Key Topics 161Define Key Terms 161Chapter 8 Using Autonomous APs 163"Do I Know This Already?" Quiz 163Foundation Topics 166Autonomous Architecture 166Configuring an Autonomous AP 167Connecting the AP 167Configuring the AP 170Converting an Autonomous AP 174Using the Autonomous to Lightweight Mode Upgrade Tool 174Converting an Autonomous AP Manually 176Exam Preparation Tasks 178Review All Key Topics 178Define Key Terms 178Chapter 9 Understanding the CUWN Architecture 181"Do I Know This Already?" Quiz 181Foundation Topics 184A Distributed Architecture 184A Centralized Architecture 186Split-MAC Architecture 188Traffic Patterns in a CUWN 190CUWN Building Blocks 192Cisco Wireless LAN Controllers 192Cisco Lightweight APs 194CUWN Management 197Exam Preparation Tasks 198Review All Key Topics 198Chapter 10 Initial Controller Configuration 201"Do I Know This Already?" Quiz 201Foundation Topics 204Connecting the Controller 204Using Controller Ports 204Using Controller Interfaces 206Running the Initial Setup Wizard 208Initial Setup with the Web Interface 208Initial Setup with the CLI 216Exam Preparation Tasks 218Review All Key Topics 218Define Key Terms 218Chapter 11 Understanding Controller Discovery 221"Do I Know This Already?" Quiz 221Foundation Topics 224Discovering a Controller 224AP States 224Discovering a WLC 226Selecting a WLC 227Designing High Availability 228Detecting a Controller Failure 230Building Redundancy 231N+1 Redundancy 231N+N Redundancy 232N+N+1 Redundancy 232AP SSO Redundancy 233Exam Preparation Tasks 235Review All Key Topics 235Define Key Terms 236Chapter 12 Understanding Roaming 239"Do I Know This Already?" Quiz 239Foundation Topics 242Roaming with Autonomous APs 242Intracontroller Roaming 244Intercontroller Roaming 246Layer 2 Roaming 247Layer 3 Roaming 248Using Mobility Groups 252Exam Preparation Tasks 256Review All Key Topics 256Define Key Terms 256Chapter 13 Understanding RRM 259"Do I Know This Already?" Quiz 259Foundation Topics 262Configuring 802.11 Support 262Configuring Data Rates 263Configuring 802.11n Support 264Understanding RRM 265RF Groups 267TPC 269DCA 272Coverage Hole Detection 274Manual RF Configuration 276Verifying RRM Results 278Exam Preparation Tasks 279Review All Key Topics 279Define Key Terms 279Chapter 14 Wireless Security Fundamentals 281"Do I Know This Already?" Quiz 282Foundation Topics 285Anatomy of a Secure Connection 285Authentication 286Message Privacy 287Message Integrity 288Intrusion Protection 289Wireless Client Authentication Methods 290Open Authentication 290WEP 291802.1x/EAP 292LEAP 294EAP-FAST 294PEAP 294EAP-TLS 295Wireless Privacy and Integrity Methods 295TKIP 295CCMP 296WPA and WPA2 297Securing Management Frames with MFP 298Configuring Wireless Security 298Configuring WPA or WPA2 Personal 299Configuring WPA2 Enterprise Mode 300Configuring WPA2 Enterprise with Local EAP 302Exam Preparation Tasks 305Review All Key Topics 305Define Key Terms 305Chapter 15 Configuring a WLAN 307"Do I Know This Already?" Quiz 307Foundation Topics 309WLAN Overview 309Configuring a WLAN 310Configuring a RADIUS Server 310Creating a Dynamic Interface 312Creating a New WLAN 313Configuring WLAN Security 315Configuring WLAN QoS 317Configuring Advanced WLAN Settings 318Finalizing WLAN Configuration 319Exam Preparation Tasks 320Review All Key Topics 320Chapter 16 Implementing a Wireless Guest Network 323"Do I Know This Already?" Quiz 323Foundation Topics 325Guest Network Overview 325Configuring a Guest Network 326Scaling the Guest Network 329Exam Preparation Tasks 332Review All Key Topics 332Define Key Terms 332Chapter 17 Understanding Wireless Clients 335"Do I Know This Already?" Quiz 335Foundation Topics 338Configuring Common Wireless Clients 338Windows 7 and 8 338Intel PROSet 341Android 345Apple OS X 346Cisco AnyConnect 348Cisco Compatible Extensions 352Exam Preparation Tasks 356Review All Key Topics 356Define Key Terms 356Chapter 18 Managing Wireless Networks with WCS 359"Do I Know This Already?" Quiz 359Foundation Topics 362WCS Overview 362Alarm Summary Dashboard 364Main Navigation Area 366WCS Home Area 366Using WCS to Configure Devices 368Using WCS Maps 370Displaying Maps 370Manipulating APs on Maps 373Viewing Information on Maps 375Generating Reports 377Exam Preparation Tasks 381Review All Key Topics 381Chapter 19 Dealing with Wireless Interference 383"Do I Know This Already?" Quiz 383Understanding Types of Interference 386Bluetooth 386ZigBee 387Cordless Phones 388Microwave Ovens 388WiMAX 388Other Devices 389Using Cisco CleanAir to Manage Interference 390Enabling CleanAir 392Air-Quality Index 394Using Event-Driven RRM 396Exam Preparation Tasks 397Review All Key Topics 397Define Key Terms 398Chapter 20 Troubleshooting WLAN Connectivity 401"Do I Know This Already?" Quiz 401Foundation Topics 405Troubleshooting Client Connectivity 405Troubleshooting Clients from the Controller 406Performing a Link Test 411Debugging a Client 412Troubleshooting Clients from WCS/NCS 415Troubleshooting AP Connectivity 420Verifying AP-to-WLC Connectivity 420Verifying AP-to-Network Connectivity 422Exam Preparation Tasks 425Review All Key Topics 425Chapter 21 Maintaining Controllers 427"Do I Know This Already?" Quiz 427Accessing WLC and AP Management Interfaces 430Accessing APs 432Maintaining WLC Code Images 434Maintaining WLC Configurations 437Working with WLC Logs 439Exam Preparation Tasks 444Review All Key Topics 444Chapter 22 Final Review 447Advice About the Exam Event 447Learn the Question Types Using the Cisco Certification Exam Tutorial 447Think About Your Time Budget 452Other Pre-Exam Suggestions 453Final Thoughts 455Appendix A Answers to "Do I Know This Already?" Quizzes 457Chapter 1 457Chapter 2 458Chapter 3 459Chapter 4 459Chapter 5 460Chapter 6 461Chapter 7 461Chapter 8 462Chapter 9 463Chapter 10 464Chapter 11 464Chapter 12 465Chapter 13 466Chapter 14 467Chapter 15 467Chapter 16 468Chapter 17 468Chapter 18 469Chapter 19 469Chapter 20 470Chapter 21 471Appendix B Modulation and Coding Schemes 473Key Terms Glossary 481Index 494
