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31 Days Before Your CCNA Exam: A day-by-day review guide for the CCNA 640-802 exam, 2nd Edition

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31 Days Before Your CCNA Exam: A day-by-day review guide for the CCNA 640-802 exam, 2nd Edition


  • Sorry, this book is no longer in print.
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  • Copyright 2009
  • Edition: 2nd
  • Book
  • ISBN-10: 1-58713-197-8
  • ISBN-13: 978-1-58713-197-4

31 Days Before your CCNA Exam, Second Edition, offers you a personable and practical way to understand the certification process, commit to taking the exam, and finish your preparation using a variety of Foundational and Supplemental study resources.

The book breaks down key exam topics into 31 daily review

sessions using short summaries, lists, tables, examples, and graphics. A Study Resources section provides you with a quick reference for locating more in-depth treatment of a day’s topics within the relevant Foundational and Supplemental resources.

Use this day-by-day guide to organize, prepare, and review all the CCNA® objectives. The features of the book empower you to fit exam preparation into an otherwise busy schedule:

  • Tear out visual calendar summarizes each day’s study topics
  • Checklist highlights important tasks and deadlines leading up to your exam
  • Description of the 640-802 CCNA exam organization and sign up process, includes how to use a voucher
  • Strategies from the author help you to be mentally, organizationally, and physically prepared for exam day
  • Conversational tone, making your study time more enjoyable

Allan Johnson entered the academic world in 1999 after ten years as a business owner and operator. He has a passion for teaching and holds both an MBA and an M.Ed in occupational training and development. Allan currently works full time developing CCNA instructional support and training materials.

Category: Cisco® Certification

Sample Content

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31 Days Before Your CCNA Exam: Connecting Switches and Ethernet Technology

Sample Pages

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Table of Contents

Introduction  xxv

Part I: Networking Basics  1

Day 31: Network Devices, Components, and Diagrams  3

    CCNA 640-802 Exam Topics  3

    Key Points  3

    Devices  3

        Switches  3

        Routers  5

    Media  5

    LANs and WANs  7

    Networking Icons  7

    Physical and Logical Topologies  8

    The Hierarchical Network Model  9

    The Enterprise Architecture  10

    Network Documentation  11

    Study Resources  12

Day 30: Network Models and Applications  13

    CCNA 640-802 Exam Topics  13

    Key Points  13

    The OSI and TCP/IP Models  13

        OSI Layers  14

        TCP/IP Layers and Protocols  15

        Protocol Data Units and Encapsulation  16

    Growth of Network-Based Applications  17

        Quality of Service  17

        Increased Network Usage  17

        The Impact of Voice and Video on the Network  18

    Study Resources  19

Day 29: Network Data Flow from End-to-End  21

    CCNA 640-802 Exam Topics  21

    Key Points  21

    The TCP/IP Application Layer  21

    The TCP/IP Transport Layer  21

        TCP Header  22

        Port Numbers  23

        Error Recovery  24

        Flow Control  25

        Connection Establishment and Termination  25

        UDP  26

    The TCP/IP Internet Layer  26

    The TCP/IP Network Access Layer  27

    Data Encapsulation Summary  28

    Using Layers to Troubleshoot  29

    Study Resources  29

Part II: Switching Concepts and Configuration  31

Day 28: Connecting Switches and Ethernet Technology  33

    CCNA 640-802 Exam Topics  33

    Key Topics  33

    Ethernet Overview  33

    Legacy Ethernet Technologies  34

        CSMA/CD  35

        Legacy Ethernet Summary  35

    Current Ethernet Technologies  36

    UTP Cabling  36

    Benefits of Using Switches  37

    Ethernet Addressing  38

    Ethernet Framing  39

    The Role of the Physical Layer  40

    Study Resources  41

Day 27: Network Segmentation and Switching Concepts  43

    CCNA 640-802 Exam Topics  43

    Key Topics  43

    Evolution to Switching  43

    Switching Logic  44

    Collision and Broadcast Domains  45

    Frame Forwarding  45

        Switch Forwarding Methods  45

        Symmetric and Asymmetric Switching  46

        Memory Buffering  46

        Layer 2 and Layer 3 Switching  46

    Accessing and Navigating Cisco IOS  46

        Connecting to Cisco Devices  46

        CLI EXEC Sessions  47

        Using the Help Facility  48

        CLI Navigation and Editing Shortcuts  48

        Command History  49

        IOS Examination Commands  50

        Subconfiguration Modes  50

    Storing and Erasing Configuration Files  51

    Study Resources  52

Day 26: Basic Switch Configuration and Port Security  53

    CCNA 640-802 Exam Topics  53

    Key Topics  53

    Basic Switch Configuration Commands  53

    Configuring SSH Access  55

    Configuring Port Security  56

    Shutting Down and Securing Unused Interfaces  58

    Study Resources  59

Day 25: Verifying and Troubleshooting Basic Switch Configurations  61

    CCNA 640-802 Exam Topics  61

    Key Points  61

    Troubleshooting Methodology  61

    Verifying Network Connectivity  62

    Interface Status and the Switch Configuration  65

        Interface Status Codes  65

        Duplex and Speed Mismatches  66

        Common Layer 1 Problems On “Up” Interfaces  67

    CDP as a Troubleshooting Tool  68

    Study Resources  70

Day 24: Switching Technologies and VLAN Concepts  71

    CCNA 640-802 Exam Topics  71

    Key Points  71

    VLAN Concepts  71

        Traffic Types  72

        Types of VLANs  72

        Voice VLAN Example  73

        Trunking VLANs  74

        Dynamic Trunking Protocol  75

    VTP Concepts  76

        VTP Modes  77

        VTP Operation  77

        VTP Pruning  78

    STP Concepts and Operation  78

    RSTP Concepts and Operation  80

    Configuring and Verifying STP  82

        PVST+, PVRST, and MIST  82

        Configuring and Verifying the BID  82

        PortFast  84

        Configuring RSTP  84

        Troubleshooting STP  84

    Study Resources  85

Day 23: VLAN and Trunking Configuration and Troubleshooting  87

    CCNA 640-802 Exam Topics  87

    Key Points  87

    Sample Topology  87

    VLAN Configuration and Verification Commands  88

    Configuring and Verifying Trunking  91

    Troubleshooting VLAN and Trunking Problems  93

    Study Resources  95

Day 22: VTP and InterVLAN Routing Configuration and Troubleshooting  97

    CCNA 640-802 Exam Topics  97

    Key Points  97

    VTP Configuration and Verification  97

    VTP Troubleshooting  102

    Inter-VLAN Routing Configuration and Verification  103

    Troubleshooting Inter-VLAN Routing  105

    Study Resources  106

Part III: Addressing the Network  107

Day 21: IPv4 Address Subnetting  109

    CCNA 640-802 Exam Topics  109

    Key Topics  109

    IPv4 Addressing  109

        Header Format  109

        Classes of Addresses  110

        Purpose of the Subnet Mask  111

    Subnetting in Four Steps  112

        Determine How Many Bits to Borrow  113

        Determine the New Subnet Mask  114

        Determine the Subnet Multiplier  114

        List the Subnets, Host Ranges, and Broadcast Addresses  114

        Subnetting Example 1  114

        Subnetting Example 2  115

        Subnetting Example 3  115

    VLSM  116

    Summarizing Subnet Addresses  118

    Private and Public IP Addressing  119

    Study Resources  120

Day 20: Host Addressing, DHCP, and DNS  123

    CCNA 640-802 Exam Topics  123

    Key Topics  123

    Addressing Devices  123

    ARP  124

    DNS  126

    DHCP  127

    Configuring on a Cisco Router as a DHCP Server  128

    Network Layer Testing Tools  132

        Ping  132

    Study Resources  134

Day 19: Basic IPv6 Concepts  137

    CCNA 640-802 Exam Topics  137

    Key Topics  137

    Overview of IPv6  137

    IPv6 Address Structure  139

        Conventions for Writing IPv6 Addresses  139

        Conventions for Writing IPv6 Prefixes  139

        IPv6 Global Unicast Address  140

        Reserved, Private, and Loopback Addresses  141

        The IPv6 Interface ID and EUI-64 Format  141

        IPv6 Address Management  142

    Transitioning to IPv6  142

    Study Resources  144

Part IV: Routing Concepts and Configuration  145

Day 18: Basic Routing Concepts  147

    Key Topics  147

    Packet Forwarding  147

        Path Determination and Switching Function Example  148

    Routing Methods  149

    Classifying Dynamic Routing Protocols  150

        IGP and EGP  150

        Distance Vector Routing Protocols  150

        Link-State Routing Protocols  151

        Classful Routing Protocols  151

        Classless Routing Protocols  152

    Dynamic Routing Metrics  152

    Administrative Distance  153

    IGP Comparison Summary  154

    Routing Loop Prevention  155

    Link-State Routing Protocol Features  156

        Building the LSDB  156

        Calculating the Dijkstra Algorithm  157

        Convergence with Link-State Protocols  158

    Study Resources  158

Day 17: Connecting and Booting Routers  161

    CCNA 640-802 Exam Topics  161

    Key Topics  161

    Router Internal Components  161

    IOS  162

    Router Bootup Process  162

    Router Ports and Interfaces  164

    Router Connections  164

    Study Resources  166

Day 16: Basic Router Configuration and Verification  167

    CCNA 640-802 Exam Topics  167

    Key Topic  167

    Basic Router Configuration  167

    Verifying Network Connectivity  175

    Study Resources  177

Day 15: Managing Cisco IOS and Configuration Files  179

    CCNA 640-802 Exam Topics  179

    Key Topics  179

    The Cisco IOS File System  179

        IFS Commands  179

        URL Prefixes for Specifying File Locations  181

        Commands for Managing Configuration Files  182

        Cisco IOS File Naming Conventions  182

    Manage IOS Images  183

        Backing Up an IOS image  184

        Restoring an IOS Image  185

        Recovering an IOS Image Using a TFTP Server  186

        Recovering an IOS Image Using Xmodem  187

    Recovering a Lost Password  188

    Study Resources  189

Day 14: Static, Default, and RIP Routing  191

    CCNA 640-802 Exam Topics  191

    Key Topics  191

    Static Route Configuration  191

        Static Routes Using the “Next Hop” Parameter  193

        Static Routes Using the Exit Interface Parameter  193

        Default Static Routes  194

    RIP Concepts  197

        RIPv1 Message Format  197

        RIPv1 Operation  198

        RIPv1 Configuration  198

        RIPv1 Verification and Troubleshooting  199

        Passive Interfaces  203

        Automatic Summarization  204

        Default Routing and RIPv1  206

        RIPv2 Configuration  207

        Disabling Autosummarization  208

        RIPv2 Verification and Troubleshooting  208

    Study Resources  209

Day 13: EIGRP Routing  211

    CCNA 640-802 Exam Topics  211

    Key Topics  211

    EIGRP Operation  211

        EIGRP Message Format  212

        RTP and EIGRP Packet Types  212

        DUAL  214

        Administrative Distance  214

    EIGRP Configuration  214

        The network Command  215

        Automatic Summarization  216

        Manual Summarization  217

        EIGRP Default Route  219

        Modifying the EIGRP Metric  219

        Modifying Hello Intervals and Hold Times  220

    EIGRP Verification and Troubleshooting  221

    Study Resources  226

Day 12: OSPF Routing  227

    CCNA 640-802 Exam Topics  227

    Key Topics  227

    OSPF Operation  227

        OSPF Message Format  227

        OSPF Packet Types  228

        Neighbor Establishment  228

        Link-State Advertisements  229

        OSPF Network Types  230

        DR/BDR Election  230

        OSPF Algorithm  231

        Link-State Routing Process  232

    OSPF Configuration  233

        The router ospf Command  234

        The network Command  234

        Router ID  235

        Modifying the OSPF Metric  236

        Controlling the DR/BDR Election  237

        Redistributing a Default Route  238

        Modifying Hello Intervals and Hold Times  238

    Verifying and Troubleshooting OSPF  239

    Study Resources  243

Day 11: Troubleshooting Routing  245

    CCNA 640-802 Exam Topics  245

    Key Topics  245

    The Basic Commands  245

    VLSM Troubleshooting  246

    Discontiguous Networks  246

    Troubleshooting RIP  247

    Troubleshooting EIGRP and OSPF Interface Issues  248

    Troubleshooting Neighbor Adjacency Issues  249

    Study Resources  250

Part V: Wireless Concepts and Configuration  251

Day 10: Wireless Standards, Components, and Security  253

    CCNA 640-802 Exam Topics  253

    Key Topics  253

    Wireless Standards  253

    Wireless Modes of Operation  254

    Wireless Frequencies  254

    Wireless Encoding and Channels  255

    Wireless Coverage Area  256

    CSMA/CA  256

    Wireless Security Risks  257

    Wireless Security Standards  258

    Study Resources  259

Day 9: Configuring and Troubleshooting Wireless Networks  261

    CCNA 640-802 Exam Topics  261

    Key Topics  261

    Implementing a WLAN  261

        Wireless LAN Implementation Checklist  262

        Wireless Troubleshooting  264

    Study Resources  264

Part VI: Basic Security Concepts and Configuration  265

Day 8: Mitigating Security Threats and Best Practices  267

    CCNA 640-802 Exam Topics  267

    Key Topics  267

    The Importance of Security  267

        Attacker Terminology  267

        Thinking Like an Attacker  268

        Balancing Security and Availability  269

        Developing a Security Policy  269

    Common Security Threats  270

        Vulnerabilities  270

        Threats to Physical Infrastructure  271

        Threats to Networks  271

        Types of Network Attacks  271

    General Mitigation Techniques  273

        Host and Server Security  273

        Intrusion Detection and Prevention  273

        Security Appliances and Applications  273

    Maintaining Security  275

    Study Resources  276

Part VII: ACL and NAT Concepts and Configuration  277

Day 7: ACL Concepts and Configurations  279

    CCNA 640-802 Exam Topics  279

    Key Topics  279

    ACL Concepts  279

        Defining an ACL  279

        Processing Interface ACLs  279

        Types of ACLs  280

        ACL Identification  281

        ACL Design Guidelines  281

    Configuring Standard Numbered ACLs  282

        Standard Numbered ACL: Permit Specific Network  282

        Standard Numbered ACL: Deny a Specific Host  283

        Standard Numbered ACL: Deny a Specific Subnet  283

        Standard Numbered ACL: Deny Telnet Access to the Router  284

    Configuring Extended Numbered ACLs  284

        Extended Numbered ACL: Deny FTP from Subnets  285

        Extended Numbered ACL: Deny Only Telnet from Subnet  285

    Configuring Named ACLs  286

        Standard Named ACL Steps and Syntax  286

        Standard Named ACL: Deny a Single Host from a Given Subnet  286

        Extended Named ACL Steps and Syntax  287

        Extended Named ACL: Deny a Telnet from a Subnet  287

    Adding Comments to Named or Numbered ACLs  287

    Complex ACLs  288

    Study Resources  288

Day 6: Verifying and Troubleshooting ACL Implementations  289

    CCNA 640-802 Exam Topics  289

    Key Topics  289

    Verifying ACLs  289

    Troubleshooting ACLs  291

        Problem 1: Host Has No Connectivity  291

        Problem 2: Denied Protocols  292

        Problem 3: Telnet is Allowed #1  293

        Problem 4: Telnet Is Allowed #2  294

        Problem 5: Telnet Is Allowed #3  294

    Study Resources  295

Day 5: NAT Concepts, Configuration, and Troubleshooting  297

    CCNA 640-802 Exam Topics  297

    Key Topics  297

    NAT Concepts  297

        A NAT Example  298

        Dynamic and Static NAT  299

        NAT Overload  299

        NAT Benefits  300

        NAT Limitations  300

    Configuring Static NAT  301

    Configuring Dynamic NAT  301

    Configuring NAT Overload  303

    Verifying NAT  303

    Troubleshooting NAT  304

    Study Resources  306

Part VIII: WAN Concepts and Configuration  307

Day 4: WAN and VPN Technologies  309

    CCNA 640-802 Exam Topics  309

    Key Topics  309

    WAN Technology Concepts  309

        WAN Components and Devices  309

        WAN Physical Layer Standards  311

        WAN Data Link Protocols  312

        WAN Switching  312

    WAN Connection Options  313

        Dedicated Connection Options  314

        Circuit-Switched Connection Options  314

        Packet-Switched Connection Options  315

        Internet Connection Options  317

        Choosing a WAN Link Option  319

    VPN Technology  320

        VPN Benefits  320

        Types of VPN Access  320

        VPN Components  322

        Establishing Secure VPN Connections  322

    Study Resources  326

Day 3: PPP Configuration and Troubleshooting  329

    CCNA 640-802 Exam Topics  329

    Key Topics  329

    HDLC  329

        HDLC Encapsulation  329

        Configuring HDLC  330

        Verifying HDLC  331

    PPP Concepts  331

        The PPP Frame Format  331

        PPP Link Control Protocol (LCP)  332

    PPP Configuration and Verification  334

        Basic PPP  334

    Study Resources  336

Day 2: Frame Relay Configuration and Troubleshooting  337

    CCNA 640-802 Exam Topics  337

    Key Topics  337

    Frame Relay Concepts  337

        Frame Relay Components  338

        Frame Relay Topologies  339

        NBMA Limitations and Solutions  340

        Inverse ARP and LMI Concepts  341

        Inverse ARP and LMI Operation  342

    Configuring and Verifying Frame Relay  343

        Full Mesh with One Subnet  344

        Partial Mesh with One Subnet per PVC  347

        Frame Relay Verification  348

    Troubleshooting WAN Implementations  349

        Troubleshooting Layer 1 Problems  350

        Troubleshooting Layer 2 Problems  350

        Troubleshooting Layer 3 Problems  351

    Study Resources  352

Day 1: CCNA Skills Review and Practice  353

    Key Topics  353

    CCNA Skills Practice  353

        Introduction  353

        Topology Diagram  353

        Addressing Table  354

        VLAN Configuration and Port Mappings  355

        ISP Configuration  355

        Task 1: Configure Frame Relay in a Hub-and-Spoke Topology  356

        Task 2: Configure PPP with CHAP  356

        Task 3: Configure Static and Dynamic NAT on HQ  356

        Task 4: Configure Default Routing  357

        Task 5: Configure Inter-VLAN Routing  357

        Task 6: Configure and Optimize EIGRP Routing  357

        Task 7: Configure VTP, Trunking, the VLAN Interface, and VLANs  357

        Task 8: Assign VLANs and Configure Port Security  358

        Task 9: Configure STP  358

        Task 10: Configure DHCP  359

        Task 11: Configure a Firewall ACL  359

    CCNA Skills Practice (Answers)  360

        Task 1: Configure Frame Relay in a Hub-and-Spoke Topology  360

        Task 2: Configure PPP with CHAP  362

        Task 3: Configure Static and Dynamic NAT on HQ  362

        Task 4: Configure Default Routing  364

        Task 5: Configure Inter-VLAN Routing  364

        Task 6: Configure and Optimize EIGRP Routing  365

        Task 7: Configure VTP, Trunking, the VLAN Interface, and VLANs  367

        Task 8: Assign VLANs and Configure Port Security  369

        Task 9: Configure STP  370

        Task 10: Configure DHCP  371

        Task 11: Configure a Firewall ACL  372

    CCNA Skills Challenge  374

Part IX: Exam Day and Post-Exam Information  375

Exam Day  377

    What You Need for the Exam  377

    What You Should Receive After Completion  377

    Summary  378

Post-Exam Information  379

    Receiving Your Certificate  379

    Determining Career Options  379

    Examining Certification Options  380

    If You Failed the Exam  380

    Summary  380

TOC, 1587131978, 10/21/08

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  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020