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This approved study guide helps you master topics on the CompTIA Network+ N10-006 exam, including the following:Computer network fundamentalsThe OSI model and TCP/IP stackMedia types, infrastructure components, and network devicesEthernet technologyIPv4 and IPv6 addressesRouting IP traffic with dynamic routing protocolsDNAT, SNAT, and PATMulticast routingWide Area Networks (WANs)Wireless LANsNetwork optimization and QoSWindows and UNIX command-line tools for network administration and troubleshootingNetwork securityTroubleshooting common Layer 2, Layer 3, and wireless networking issuesCompTIA Network+ N10-006 Cert Guide contains proven study features that enable you to succeed on the exam the first time. Best-selling authors and expert instructors Keith Barker and Kevin Wallace share preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills, essential for successful completion of the performance-based testing items on the exam. This complete, CompTIA-approved study package includes the following:A test-preparation routine proven to help you pass the exams approved by CompTIAClearly defined chapter learning objectives covering all N10-006 exam topicsChapter-ending review questions and exam preparation exercises, which help you drill on key concepts you must know thoroughlyThe powerful Pearson IT Certification Practice Test software, complete with hundreds of well reviewed, exam-realistic questions, customization options, and detailed performance reports40 performance-based practice question exercises to help you prepare for the hands-on exam questionsAn 80% discount off the Premium Edition eBook and Practice Test (a $40 value!)A free copy of the CompTIA Network+ Simulator Lite software, complete with meaningful lab exercises that help you hone your hands-on skillsMore than 60 minutes of video mentoring from the authorA final preparation chapter that guides you through tools and resources to help you craft your review and test-taking strategiesAn Exam Essentials appendix that quickly recaps all major chapter topics for easy reference, both in print and interactive digital formatA key terms Glossary in both print and on the DVD, which acts as an interactive flash-card applicationStudy plan suggestions and templates to help you organize and optimize your study timeA 10% exam discount voucher (a $27 value!)Well regarded for its level of detail, study plans, assessment features, challenging review questions and exercises, video instruction, and hands-on labs, this approved study guide helps you master the concepts and techniques that ensure your exam success.Keith Barker, CCIE No. 6783, has been working in the information technology (IT) industry since 1985. He currently enjoys creating effective and entertaining video training for CBT Nuggets. He has certifications from VMware, Cisco, Juniper, HP, Check Point, Palo Alto, (ISC)2, and many others.Kevin Wallace, CCIEx2 (Collaboration and R/S) NO. 7945, has been a network design specialist for the Walt Disney World Resort, an instructor of networking courses for Skillsoft, and a network manager for Eastern Kentucky University. Kevin currently produces video courses and writes books for Cisco Press/Pearson IT Certification (http://kwtrain.com/books).Companion DVDThe DVD contains more than 200 practice questions, 40 performance-based question exercises, glossary flash cards, an exam essentials review tool, memory table exercises and answer keys, a study planner tool, more than 60 minutes of video, and the Network+ Simulator Lite.Includes Exclusive Offer for 80% Off Premium Edition eBook and Practice Tests
Contents
Chapter 1 Computer Network Fundamentals 2Foundation Topics 4Defining a Network 4The Purpose of Networks 4Overview of Network Components 5Networks Defined by Geography 7LAN 7WAN 8Other Categories of Networks 8CAN 8MAN 8PAN 9Networks Defined by Topology 9Physical Versus Logical Topology 9Bus Topology 11Ring Topology 13Star Topology 14Hub-and-Spoke Topology 15Full-Mesh Topology 17Partial-Mesh Topology 18Networks Defined by Resource Location 19Client/Server Networks 19Peer-to-Peer Networks 21Real-World Case Study 22Summary 23Exam Preparation Tasks 23Review Questions 25Chapter 2 The OSI Reference Model 28Foundation Topics 30The Purpose of Reference Models 30The OSI Model 31Layer 1: The Physical Layer 33Layer 2: The Data Link Layer 37Media Access Control 37Logical Link Control 38Layer 3: The Network Layer 40Layer 4: The Transport Layer 42Layer 5: The Session Layer 44Layer 6: The Presentation Layer 46Layer 7: The Application Layer 47The TCP/IP Stack 48Layers of the TCP/IP Stack 48Common Application Protocols in the TCP/IP Stack 51Real-World Case Study 55Summary 56Exam Preparation Tasks 56Review Questions 58Chapter 3 Network Components 60Foundation Topics 62Media 62Coaxial Cable 62Twisted-Pair Cable 64Shielded Twisted Pair 64Unshielded Twisted Pair 65Plenum Versus Nonplenum Cable 68Fiber-Optic Cable 69Multimode Fiber 69Single-Mode Fiber 71Fiber Connector Polishing Styles 73Media Converters 74Cable Distribution 74Wireless Technologies 76Network Infrastructure Devices 77Hubs 77Bridges 79Switches 80Multilayer Switches 87Routers 88Infrastructure Device Summary 89Specialized Network Devices 90VPN Concentrators 90Firewalls 91DNS Servers 92DHCP Servers 94Proxy Servers 96Content Engines 97Content Switches 98Virtual Network Devices 99Virtual Servers 99Virtual Routers and Firewalls 100Virtual Switches 101Virtual Desktops 102Other Virtualization Solutions 102Cloud Computing 103Software-Defined Networking 104Voice over IP Protocols and Components 104Real-World Case Study 105Summary 106Exam Preparation Tasks 107Review Questions 109Chapter 4 Ethernet Technology 112Foundation Topics 114Principles of Ethernet 114Ethernet Origins 114Carrier Sense Multiple Access Collision Detect 116Distance and Speed Limitations 120Ethernet Switch Features 122Virtual LANs 122Switch Configuration for an Access Port 124Trunks 125Switch Configuration for a Trunk Port 127Spanning Tree Protocol 127Corruption of a Switch's MAC Address Table 128Broadcast Storms 129STP Operation 130Link Aggregation 133LACP Configuration 134Power over Ethernet 135Port Monitoring 136Port Mirroring Configuration 138User Authentication 138Management Access and Authentication 140First-Hop Redundancy 141Other Switch Features 142Real-World Case Study 143Summary 144Exam Preparation Tasks 144Review Questions 146Chapter 5 IPv4 and IPv6 Addresses 148Foundation Topics 150Binary Numbering 150Principles of Binary Numbering 150Converting a Binary Number to a Decimal Number 151Converting a Decimal Number to a Binary Number 151Binary Numbering Practice 153Binary Conversion Exercise 1 153Binary Conversion Exercise 1: Solution 154Binary Conversion Exercise 2 154Binary Conversion Exercise 2: Solution 154Binary Conversion Exercise 3 154Binary Conversion Exercise 3: Solution 155Binary Conversion Exercise 4 155Binary Conversion Exercise 4: Solution 156IPv4 Addressing 157IPv4 Address Structure 157Classes of Addresses 159Types of Addresses 161Unicast 161Broadcast 161Multicast 162Assigning IPv4 Addresses 163IP Addressing Components 163Static Configuration 164Dynamic Configuration 169BOOTP 169DHCP 169Automatic Private IP Addressing 171Subnetting 172Purpose of Subnetting 172Subnet Mask Notation 173Subnet Notation: Practice Exercise 1 174Subnet Notation: Practice Exercise 1 Solution 174Subnet Notation: Practice Exercise 2 175Subnet Notation: Practice Exercise 2 Solution 175Extending a Classful Mask 175Borrowed Bits 175Calculating the Number of Created Subnets 176Calculating the Number of Available Hosts 176Basic Subnetting Practice: Exercise 1 177Basic Subnetting Practice: Exercise 1 Solution 177Basic Subnetting Practice: Exercise 2 178Basic Subnetting Practice: Exercise 2 Solution 178Calculating New IP Address Ranges 179Advanced Subnetting Practice: Exercise 1 182Advanced Subnetting Practice: Exercise 1 Solution 182Advanced Subnetting Practice: Exercise 2 183Advanced Subnetting Practice: Exercise 2 Solution 184Additional Practice 185Classless Interdomain Routing 186IP Version 6 187Need for IPv6 187IPv6 Address Structure 188IPv6 Address Types 189IPv6 Data Flows 189Unicast 189Multicast 190Anycast 191Real-World Case Study 192Summary 192Exam Preparation Tasks 193Review Questions 194Chapter 6 Routing IP Packets 198Foundation Topics 200Basic Routing Processes 200Sources of Routing Information 203Directly Connected Routes 203Static Routes 204Dynamic Routing Protocols 205Routing Protocol Characteristics 207Believability of a Route 208Metrics 208Interior Versus Exterior Gateway Protocols 209Route Advertisement Method 210Distance Vector 210Link State 212Routing Protocol Examples 212Address Translation 214NAT 214PAT 217Multicast Routing 218IGMP 218PIM 220PIM-DM 221PIM-SM 223Real-World Case Study 224Summary 225Exam Preparation Tasks 226Review Questions 227Chapter 7 Wide-Area Networks 230Foundation Topics 232WAN Properties 232WAN Connection Types 232WAN Data Rates 234WAN Media Types 235Physical Media 235Wireless Media 236WAN Technologies 237Dedicated Leased Line 237T1 238E1 239T3 239E3 239CSU/DSU 239Metro Ethernet 240Point-to-Point Protocol 241Point-to-Point Protocol over Ethernet 242Microsoft RRAS 243Digital Subscriber Line 244Cable Modem 246Synchronous Optical Network 247Satellite 249Plain Old Telephone Service 251Integrated Services Digital Network 253Frame Relay 255Asynchronous Transfer Mode 256Multiprotocol Label Switching 259Overlay Networks 260Real-World Case Study 261Summary 261Exam Preparation Tasks 262Review Questions 263Chapter 8 Wireless LANs 266Foundation Topics 268Introducing Wireless LANs 268WLAN Concepts and Components 268Wireless Routers 268Wireless Access Point 269Antennas 270Frequencies and Channels 273CSMA/CA 275Transmission Methods 276WLAN Standards 277802.11a 277802.11b 277802.11g 277802.11n 277802.11ac 278802.11x Standard Summary 278Deploying Wireless LANs 279Types of WLANs 279IBSS 279BSS 280ESS 280Mesh Topology 281Sources of Interference 281Wireless AP Placement 283Securing Wireless LANs 284Security Issues 284Approaches to WLAN Security 286Security Standards 288WEP 288WPA 289WPA2 289Additional Wireless Options 290Real-World Case Study 290Summary 291Exam Preparation Tasks 291Review Questions 293 Chapter 9 Network Optimization 296Foundation Topics 298High Availability 298High-Availability Measurement 298Fault-Tolerant Network Design 298Hardware Redundancy 300Layer 3 Redundancy 300Design Considerations for High-Availability Networks 301High-Availability Best Practices 302Content Caching 302Load Balancing 303QoS Technologies 304Introduction to QoS 304QoS Configuration Steps 305QoS Components 306QoS Mechanisms 307Classification 308Marking 308Congestion Management 309Congestion Avoidance 309Policing and Shaping 310Link Efficiency 312Case Study: SOHO Network Design 313Case Study Scenario 313Suggested Solution 315IP Addressing 315Layer 1 Media 317Layer 2 Devices 317Layer 3 Devices 318Wireless Design 318Environmental Factors 319Cost Savings Versus Performance 320Topology 320Real-World Case Study 320Summary 321Exam Preparation Tasks 322Review Questions 323Chapter 10 Command-Line Tools 326Foundation Topics 328Windows Commands 328arp 328ipconfig 330nbtstat 333netstat 336nslookup 338ping 340ping with IPv6 342route 342tracert 346tracert with IPv6 347PathPing 348UNIX Commands 348arp 349dig and nslookup 352host 353ifconfig 353traceroute 354traceroute for IPv6 355netstat 355ping 357Real-World Case Study 359Summary 360Exam Preparation Tasks 360Review Questions 362Chapter 11 Network Management 366Foundation Topics 368Maintenance Tools 368Bit-Error Rate Tester 368Butt Set 369Cable Certifier 369Cable Tester 370Connectivity Software 370Crimper 370Electrostatic Discharge Wrist Strap 371Environmental Monitor 372Loopback Plug 373Multimeter 373Protocol Analyzer 374WiFi Analyzer 375Looking-Glass Sites 375Speed Test Sites 376Punch-Down Tool 376Throughput Tester 376Time Domain Reflectometer/Optical Time Domain Reflectometer 377Toner Probe 378Configuration Management 378Monitoring Resources and Reports 381SNMP 381Syslog 385Logs 387Application Logs 388Security Logs 388System Logs 389Real-World Case Study 389Summary 390Exam Preparation Tasks 391Review Questions 392Chapter 12 Network Security 396Foundation Topics 398Security Fundamentals 398Network Security Goals 398Confidentiality 398Symmetric Encryption 399Asymmetric Encryption 400Integrity 402Availability 403Categories of Network Attacks 403Confidentiality Attacks 403Integrity Attacks 407Availability Attacks 409Denial of Service 410Distributed Denial of Service 410TCP SYN Flood 410Buffer Overflow 411ICMP Attacks 411Electrical Disturbances 412Attacks on a System's Physical Environment 413Physical Controls 414Defending Against Attacks 414User Training 414Patching 415Security Policies 416Governing Policy 417Technical Policies 418End-User Policies 418More Detailed Documents 418Incident Response 419Vulnerability Scanners 420Nessus 420Nmap 421Honey Pots and Honey Nets 422Access Control Lists 423Remote-Access Security 424Firewalls 426Firewall Types 426Firewall Inspection Types 427Packet-Filtering Firewall 427Stateful Firewall 428Firewall Zones 429Unified Threat Management Firewalls 430Virtual Private Networks 431Overview of IPsec with IKEv1 433IKE Modes and Phases 433Authentication Header and Encapsulating Security Payload 435The Five Steps in Setting Up and Tearing Down an IPsec Site-to-Site VPN Using IKEv1 437Other VPN Technologies 438Intrusion Detection and Prevention 439IDS Versus IPS 439IDS and IPS Device Categories 440Detection Methods 440Signature-Based Detection 440Policy-Based Detection 441Anomaly-Based Detection 441Deploying Network-Based and Host-Based Solutions 442Real-World Case Study 443Summary 444Exam Preparation Tasks 445Review Questions 447Chapter 13 Network Troubleshooting 450Foundation Topics 452Troubleshooting Basics 452Troubleshooting Fundamentals 452Structured Troubleshooting Methodology 454Physical Layer Troubleshooting 457Physical Layer Troubleshooting: Scenario 458Physical Layer Troubleshooting: Solution 459Data Link Layer Troubleshooting 460Data Link Layer Troubleshooting: Scenario 461Data Link Layer Troubleshooting: Solution 461Network Layer Troubleshooting 462Layer 3 Data Structures 462Common Layer 3 Troubleshooting Issues 464Network Layer Troubleshooting: Scenario 465Network Layer Troubleshooting: Solution 466Wireless Troubleshooting 467Wireless Network Troubleshooting: Scenario 469Wireless Network Troubleshooting: Solution 469Specialized Networks 470Real-World Case Study 470Summary 471Exam Preparation Tasks 472Review Questions 473Chapter 14 Final Preparation 476Tools for Final Preparation 477Pearson Cert Practice Test Engine and Questions on the DVD 477Install the Software from the DVD 478Activate and Download the Practice Exam 479Activating Other Exams 480Premium Edition 480Video Training on DVD 480Memory Tables 481Simulations and Performance-Based Exercises 481End-of-Chapter Review Tools 481Suggested Plan for Final Review and Study 481Strategies for Taking the Exam 483Summary 484APPENDIX A Answers to Review Questions 486APPENDIX B Network+ N10-006 Exam Updates 490APPENDIX C Exam Essentials 494Glossary 506Index 533ON THE DVD:APPENDIX D Memory TablesAPPENDIX E Memory Table Answer KeyAPPENDIX F Study Planner
