 |
Ksiazki - Informatyczne .pl » informatyka » informatyka CCENT/CCNA ICND1 Official Exam Certification Guide 2e
Opis CCENT/CCNA ICND1 Official Exam Certification Guide 2e: CCENT/CCNA ICND1 Official Exam Certification Guide Second Edition
Wendell Odom, CCIE® No. 1624 CCENT/CCNA ICND1 Official Exam Certification Guide, Second Edition, is a best of breed Cisco® exam study guide that focuses specifically on the objectives for the CCENT® and CCNA® ICND1 exam. This fully updated edition presents complete reviews and a more challenging and realistic exam preparation experience. Senior instructor and best-selling author Wendell Odom shares preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. The material is presented in a concise manner, focused on increasing your understanding of exam topics and preparing you for the numerous challenges the exams present. CCENT/CCNA ICND1 Official Exam Certification Guide, Second Edition, presents you with an organized test preparation routine through the use of proven series elements and techniques. "Do I Know This Already?" quizzes open each chapter and allow you to decide how much time you need to spend on each section. Chapter-ending Exam Preparation Tasks sections help you drill on key concepts you must know thoroughly and help increase your speed in answering questions, a difficult hurdle many exam candidates face on the new exams. A Final Preparation chapter guides you through tools and resources to help you craft your final study plan. Special troubleshooting sections help you master the complex scenarios you will face on the exam. The companion CD-ROM contains a powerful testing engine that allows you to focus on individual topic areas or take complete, timed exams. The assessment engine also tracks your performance and provides feedback on a chapter-by-chapter basis, presenting question-by-question remediation to the text. The bonus DVD contains more than 60 minutes of personal video mentoring from the author focused mainly on bringing difficult subnetting concepts to life. Well-regarded for its level of detail, assessment features, and challenging practice questions, this book provides you with more detailed information and more realistic practice exercises than any other CCNA study guide, enabling you to succeed on the exam the first time. CCENT/CCNA ICND1 Official Exam Certification Guide, Second Edition, is part of a recommended learning path from Cisco that includes simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press. To find out more about instructor-led training, e-learning, and hands-on instruction offered by authorized Cisco Learning Partners worldwide, please visit www.cisco.com/go/authorizedtraining. Wendell Odom, CCIE® No. 1624, has been in the networking industry since 1981. He currently teaches QoS, MPLS, and CCNA courses for Skyline Advanced Technology Services (www.skyline-ats.com). Wendell has worked as a network engineer, consultant, systems engineer, and instructor and course developer, and has taught authorized Cisco courses for the majority of the last 14 years. The official study guide helps you master all the topics on the CCENT and CCNA ICND1 exam, including
Companion CD-ROM The CD-ROM contains an electronic copy of the book and 200 practice questions for the ICND1 and full CCNA exams, including simulation and testlet questions, all available in study mode, test mode, and flash card format. BONUS DVD The DVD contains more than 60 minutes of personal instruction from the author. This volume is part of the Exam Certification Guide Series from Cisco Press®. Books in this series provide officially developed exam preparation materials that offer assessment, review, and practice to help Cisco Career Certification candidates identify weaknesses, concentrate their study efforts, and enhance their confidence as exam day nears. Category: Cisco Press-Cisco Certification Covers: CCENT and CCNA ICND1 Exam 640-822 Spis treści CCENT/CCNA ICND1 Official Exam Certification Guide 2e: Part I Networking Fundamentals 3 Chapter 1 Introduction to Computer Networking Concepts 5 Perspectives on Networking 5 The Flintstones Network: The First Computer Network? 8 Chapter 2 The TCP/IP and OSI Networking Models 17 "Do I Know This Already?" Quiz 18 Foundation Topics 21 The TCP/IP Protocol Architecture 22 The TCP/IP Application Layer 23 The TCP/IP Transport Layer 25 The TCP/IP Internet Layer 27 The TCP/IP Network Access Layer 28 Data Encapsulation Terminology 30 The OSI Reference Model 32 Comparing OSI and TCP/IP 32 OSI Layers and Their Functions 34 OSI Layering Concepts and Benefits 35 OSI Encapsulation Terminology 36 Exam Preparation Tasks 38 Review all the Key Topics 38 Complete the Tables and Lists from Memory 38 Definitions of Key Terms 38 OSI Reference 39 Chapter 3 Fundamentals of LANs 41 "Do I Know This Already?" Quiz 41 Foundation Topics 45 An Overview of Modern Ethernet LANs 45 A Brief History of Ethernet 48 The Original Ethernet Standards: 10BASE2 and 10BASE5 48 Repeaters 50 Building 10BASE-T Networks with Hubs 51 Ethernet UTP Cabling 52 UTP Cables and RJ-45 Connectors 52 Transmitting Data Using Twisted Pairs 54 UTP Cabling Pinouts for 10BASE-T and 100BASE-TX 55 1000BASE-T Cabling 58 Improving Performance by Using Switches Instead of Hubs 58 Increasing Available Bandwidth Using Switches 61 Doubling Performance by Using Full-Duplex Ethernet 62 Ethernet Layer 1 Summary 63 Ethernet Data-Link Protocols 63 Ethernet Addressing 64 Ethernet Framing 65 Identifying the Data Inside an Ethernet Frame 67 Error Detection 68 Exam Preparation Tasks 69 Review All the Key Topics 69 Complete the Tables and Lists from Memory 69 Definitions of Key Terms 69 Chapter 4 Fundamentals of WANs 71 "Do I Know This Already?" Quiz 71 Foundation Topics 74 OSI Layer 1 for Point-to-Point WANs 74 WAN Connections from the Customer Viewpoint 77 WAN Cabling Standards 78 Clock Rates, Synchronization, DCE, and DTE 80 Building a WAN Link in a Lab 81 Link Speeds Offered by Telcos 82 OSI Layer 2 for Point-to-Point WANs 83 HDLC 83 Point-to-Point Protocol 85 Point-to-Point WAN Summary 85 Frame Relay and Packet-Switching Services 86 The Scaling Benefits of Packet Switching 86 Frame Relay Basics 87 Exam Preparation Tasks 91 Review All the Key Topics 91 Complete the Tables and Lists from Memory 91 Definitions of Key Terms 91 Chapter 5 Fundamentals of IP Addressing and Routing 93 "Do I Know This Already?" Quiz 93 Foundation Topics 98 Overview of Network Layer Functions 98 Routing (Forwarding) 99 PC1's Logic: Sending Data to a Nearby Router 100 R1 and R2's Logic: Routing Data Across the Network 100 R3's Logic: Delivering Data to the End Destination 100 Network Layer Interaction with the Data Link Layer 101 IP Packets and the IP Header 102 Network Layer (Layer 3) Addressing 103 Routing Protocols 104 IP Addressing 105 IP Addressing Definitions 105 How IP Addresses Are Grouped 106 Classes of Networks 107 The Actual Class A, B, and C Network Numbers 109 IP Subnetting 110 IP Routing 114 Host Routing 114 Router Forwarding Decisions and the IP Routing Table 115 IP Routing Protocols 118 Network Layer Utilities 121 Address Resolution Protocol and the Domain Name System 121 DNS Name Resolution 122 The ARP Process 122 Address Assignment and DHCP 123 ICMP Echo and the ping Command 125 Exam Preparation Tasks 126 Review All the Key Topics 126 Complete the Tables and Lists from Memory 127 Definitions of Key Terms 127 Chapter 6 Fundamentals of TCP/IP Transport, Applications, and Security 129 "Do I Know This Already?" Quiz 129 Foundation Topics 133 TCP/IP Layer 4 Protocols: TCP and UDP 133 Transmission Control Protocol 134 Multiplexing Using TCP Port Numbers 135 Popular TCP/IP Applications 138 Error Recovery (Reliability) 140 Flow Control Using Windowing 141 Connection Establishment and Termination 142 Data Segmentation and Ordered Data Transfer 144 User Datagram Protocol 145 TCP/IP Applications 146 QoS Needs and the Impact of TCP/IP Applications 146 The World Wide Web, HTTP, and SSL 149 Universal Resource Locators 150 Finding the Web Server Using DNS 150 Transferring Files with HTTP 152 Network Security 153 Perspectives on the Sources and Types of Threats 154 Firewalls and the Cisco Adaptive Security Appliance (ASA) 158 Anti-x 160 Intrusion Detection and Prevention 160 Virtual Private Networks (VPN) 161 Exam Preparation Tasks 163 Review All the Key Topics 163 Complete the Tables and Lists from Memory 163 Definitions of Key Terms 163 Part II LAN Switching 165 Chapter 7 Ethernet LAN Switching Concepts 167 "Do I Know This Already?" Quiz 167 Foundation Topics 171 LAN Switching Concepts 171 Historical Progression: Hubs, Bridges, and Switches 171 Switching Logic 174 The Forward Versus Filter Decision 175 How Switches Learn MAC Addresses 177 Flooding Frames 178 Avoiding Loops Using Spanning Tree Protocol 179 Internal Processing on Cisco Switches 180 LAN Switching Summary 182 LAN Design Considerations 183 Collision Domains and Broadcast Domains 183 Collision Domains 183 Broadcast Domains 184 The Impact of Collision and Broadcast Domains on LAN Design 185 Virtual LANs (VLAN) 187 Campus LAN Design Terminology 188 Ethernet LAN Media and Cable Lengths 191 Exam Preparation Tasks 194 Review All the Key Topics 194 Complete the Tables and Lists from Memory 194 Definitions of Key Terms 195 Chapter 8 Operating Cisco LAN Switches 197 "Do I Know This Already?" Quiz 197 Foundation Topics 200 Accessing the Cisco Catalyst 2960 Switch CLI 200 Cisco Catalyst Switches and the 2960 Switch 201 Switch Status from LEDs 202 Accessing the Cisco IOS CLI 205 CLI Access from the Console 206 Accessing the CLI with Telnet and SSH 208 Password Security for CLI Access 208 User and Enable (Privileged) Modes 210 CLI Help Features 211 The debug and show Commands 213 Configuring Cisco IOS Software 214 Configuration Submodes and Contexts 215 Storing Switch Configuration Files 217 Copying and Erasing Configuration Files 220 Initial Configuration (Setup Mode) 221 Exam Preparation Tasks 226 Review All the Key Topics 226 Complete the Tables and Lists from Memory 226 Definitions of Key Terms 226 Command References 226 Chapter 9 Ethernet Switch Configuration 231 "Do I Know This Already?" Quiz 231 Foundation Topics 235 Configuration of Features in Common with Routers 235 Securing the Switch CLI 235 Configuring Simple Password Security 236 Configuring Usernames and Secure Shell (SSH) 239 Password Encryption 242 The Two Enable Mode Passwords 244 Console and vty Settings 245 Banners 245 History Buffer Commands 246 The logging synchronous and exec-timeout Commands 247 LAN Switch Configuration and Operation 248 Configuring the Switch IP Address 248 Configuring Switch Interfaces 251 Port Security 253 VLAN Configuration 256 Securing Unused Switch Interfaces 259 Exam Preparation Tasks 261 Review All the Key Topics 261 Complete the Tables and Lists from Memory 261 Definitions of Key Terms 262 Command References 262 Chapter 10 Ethernet Switch Troubleshooting 267 "Do I Know This Already?" Quiz 267 Foundation Topics 271 Perspectives on Network Verification and Troubleshooting 271 Attacking Sim Questions 271 Simlet Questions 272 Multiple-Choice Questions 273 Approaching Questions with an Organized Troubleshooting Process 273 Isolating Problems at Layer 3, and Then at Layers 1 and 2 275 Troubleshooting as Covered in This Book 276 Verifying the Network Topology with Cisco Discovery Protocol 277 Analyzing Layer 1 and 2 Interface Status 282 Interface Status Codes and Reasons for Nonworking States 282 Interface Speed and Duplex Issues 284 Common Layer 1 Problems on Working Interfaces 287 Analyzing the Layer 2 Forwarding Path with the MAC Address Table 289 Analyzing the Forwarding Path 292 Port Security and Filtering 293 Exam Preparation Tasks 295 Review All the Key Topics 295 Complete the Tables and Lists from Memory 295 Definitions of Key Terms 295 Command References 295
"Do I Know This Already?" Quiz 299 Foundation Topics 302 Wireless LAN Concepts 302 Comparisons with Ethernet LANs 302 Wireless LAN Standards 304 Modes of 802.11 Wireless LANs 305 Wireless Transmissions (Layer 1) 307 Wireless Encoding and Nonoverlapping DSSS Channels 309 Wireless Interference 311 Coverage Area, Speed, and Capacity 311 Media Access (Layer 2) 314 Deploying WLANs 315 Wireless LAN Implementation Checklist 315 Step 1: Verify the Existing Wired Network 316 Step 2: Install and Configure the AP's Wired and IP Details 317 Step 3: Configure the AP's WLAN Details 317 Step 4: Install and Configure One Wireless Client 318 Step 5: Verify That the WLAN Works from the Client 319 Wireless LAN Security 320 WLAN Security Issues 320 The Progression of WLAN Security Standards 322 Wired Equivalent Privacy (WEP) 322 SSID Cloaking and MAC Filtering 323 The Cisco Interim Solution Between WEP and 802.11i 324 Wi-Fi Protected Access (WPA) 325 IEEE 802.11i and WPA-2 325 Exam Preparation Tasks 327 Review All the Key Topics 327 Complete the Tables and Lists from Memory 327 Definitions of Key Terms 327 Part III IP Routing 329
"Do I Know This Already?" Quiz 331 Foundation Topics 336 Exam Preparation Tools for Subnetting 336 Suggested Subnetting Preparation Plan 337 More Practice Using a Subnet Calculator 338 IP Addressing and Routing 339 IP Addressing Review 339 Public and Private Addressing 341 IP Version 6 Addressing 342 IP Subnetting Review 343 IP Routing Review 345 Math Operations Used When Subnetting 347 Converting IP Addresses and Masks from Decimal to Binary and Back Again 347 Performing a Boolean AND Operation 349 Prefix Notation/CIDR Notation 351 Binary Process to Convert Between Dotted Decimal and Prefix Notation 352 Decimal Process to Convert Between Dotted Decimal and Prefix Notation 353 Practice Suggestions 355 Analyzing and Choosing Subnet Masks 355 Analyzing the Subnet Mask in an Existing Subnet Design 356 The Three Parts: Network, Subnet, and Host 356 Binary Process: Finding the Number of Network, Subnet, and Host Bits 357 Decimal Process: Finding the Number of Network, Subnet, and Host Bits 358 Determining the Number of Subnets and Number of Hosts Per Subnet 359 Number of Subnets: Subtract 2, or Not? 360 Practice Examples for Analyzing Subnet Masks 361 Choosing a Subnet Mask that Meets Design Requirements 362 Finding the Only Possible Mask 363 Finding Multiple Possible Masks 365 Choosing the Mask that Maximizes the Number of Subnets or Hosts 366 Practice Suggestions 367 Analyzing Existing Subnets 368 Finding the Subnet Number: Binary 368 Finding the Subnet Number: Binary Shortcut 371 Finding the Subnet Broadcast Address: Binary 372 Finding the Range of Valid IP Addresses in a Subnet 375 Finding the Subnet, Broadcast Address, and Range of Addresses: Decimal Process 377 Decimal Process with Easy Masks 377 Decimal Process with Difficult Masks 378 Finding the Broadcast Address: Decimal 381 Summary of Decimal Processes to Find the Subnet, Broadcast, and Range 382 Practice Suggestions 383 Design: Choosing the Subnets of a Classful Network 384 Finding All Subnets with Fewer Than 8 Subnet Bits 384 Finding All Subnets with Exactly 8 Subnet Bits 388 Practice Suggestions 389 Finding All Subnets with More Than 8 Subnet Bits 389 More Practice Suggestions 393 Exam Preparation Tasks 394 Review All the Key Topics 394 Complete the Tables and Lists from Memory 396 Definitions of Key Terms 396 Read Appendix F Scenario 1, Part A 396 Subnetting Questions and Processes 396
"Do I Know This Already?" Quiz 399 Foundation Topics 403 Installing Cisco Routers 403 Installing Enterprise Routers 403 Cisco Integrated Services Routers 405 Physical Installation 406 Installing Internet Access Routers 407 A SOHO Installation with a Separate Switch, Router, and Cable Modem 407 A SOHO Installation with an Integrated Switch, Router, and DSL Modem 408 Regarding the SOHO Devices Used in This Book 409 Cisco Router IOS CLI 409 Comparisons Between the Switch CLI and Router CLI 410 Router Interfaces 411 Interface Status Codes 413 Router Interface IP Addresses 414 Bandwidth and Clock Rate on Serial Interfaces 415 Router Auxiliary (Aux) Port 417 Initial Configuration (Setup Mode) 417 Upgrading Cisco IOS Software and the Cisco IOS Software Boot Process 420 Upgrading a Cisco IOS Software Image into Flash Memory 420 The Cisco IOS Software Boot Sequence 423 The Three Router Operating Systems 425 The Configuration Register 425 How a Router Chooses Which OS to Load 426 The show version Command and Seeing the Configuration Register's Value 429 Exam Preparation Tasks 431 Review All the Key Topics 431 Complete the Tables and Lists from Memory 431 Definitions of Key Terms 432 Read Appendix F Scenario 2 432 Command References 432
"Do I Know This Already?" Quiz 435 Foundation Topics 439 Connected and Static Routes 439 Connected Routes 439 Static Routes 442 Extended ping Command 444 Default Routes 446 Routing Protocol Overview 448 RIP-2 Basic Concepts 449 Comparing and Contrasting IP Routing Protocols 450 Interior and Exterior Routing Protocols 451 Routing Protocol Types/Algorithms 452 Metrics 452 Autosummarization and Manual Summarization 454 Classless and Classful Routing Protocols 454 Convergence 455 Miscellaneous Comparison Points 455 Summary of Interior Routing Protocols 455 Configuring and Verifying RIP-2 456 RIP-2 Configuration 456 Sample RIP Configuration 457 RIP-2 Verification 458 Interpreting the Output of the show ip route Command 460 Administrative Distance 461 The show ip protocols Command 462 Examining RIP Messages with debug 464 Exam Preparation Tasks 467 Review All the Key Topics 467 Complete the Tables and Lists from Memory 467 Definitions of Key Terms 468 Command References 468
"Do I Know This Already?" Quiz 471 Foundation Topics 475 IP Troubleshooting Tips and Tools 475 IP Addressing 475 Avoiding Reserved IP Addresses 475 One Subnet, One Mask, for Each LAN 476 Summary of IP Addressing Tips 478 Host Networking Commands 478 Troubleshooting Host Routing Problems 482 Finding the Matching Route on a Router 483 Troubleshooting Commands 485 The show ip arp Command 485 The traceroute Command 486 Telnet and Suspend 487 A Routing Troubleshooting Scenario 491 Scenario Part A: Tasks and Questions 491 Scenario Part A: Answers 494 Scenario Part B: Analyze Packet/Frame Flow 495 Scenario Part B: Answers 496 Scenario Part B: Question 1 497 Scenario Part B: Question 2 498 Scenario Part B: Question 3 499 Scenario Part B: Question 4 501 Scenario Part B: Question 5 501 Scenario Part B: Question 6 502 Scenario Part B: Question 7 503 Scenario Part C: Analyze Connected Routes 503 Scenario Part C: Answers 503 Exam Preparation Tasks 505 Review All the Key Topics 505 Complete the Tables and Lists from Memory 506 Command Reference 506 Part IV Wide-Area Networks 509
"Do I Know This Already?" Quiz 511 Foundation Topics 514 WAN Technologies 514 Perspectives on the PSTN 514 Analog Modems 517 Digital Subscriber Line 519 DSL Types, Speeds, and Distances 521 DSL Summary 522 Cable Internet 523 Comparison of Remote-Access Technologies 525 ATM 525 Packet Switching Versus Circuit Switching 527 Ethernet as a WAN Service 527 IP Services for Internet Access 528 Address Assignment on the Internet Access Router 529 Routing for the Internet Access Router 530 NAT and PAT 531 Exam Preparation Tasks 536 Review All the Key Topics 536 Complete the Tables and Lists from Memory 536 Definitions of Key Terms 537
"Do I Know This Already?" Quiz 539 Foundation Topics 542 Configuring Point-to-Point WANs 542 Configuring HDLC 542 Configuring PPP 545 Configuring and Troubleshooting Internet Access Routers 546 Internet Access Router: Configuration Steps 547 Step 1: Establish IP Connectivity 547 Step 2: Install and Access SDM 548 Step 3: Configure DHCP and PAT 549 Step 4: Plan for DHCP Services 554 Step 5: Configure the DHCP Server 556 Internet Access Router Verification 557 Exam Preparation Tasks 560 Review All the Key Topics 560 Complete the Tables and Lists from Memory 560 Definitions of Key Terms 560 Command References 560 Part V Final Preparation 563
Tools for Final Preparation 565 Exam Engine and Questions on the CD 565 Install the Software from the CD 566 Activate and Download the Practice Exam 566 Activating Other Exams 567 The Cisco CCNA Prep Center 567 Subnetting Videos, Reference Pages, and Practice Problems 568 Scenarios 568 Study Plan 569 Recall the Facts 569 Practice Subnetting 570 Build Troubleshooting Skills Using Scenarios 571 Use the Exam Engine 571 Choosing Study or Simulation Mode 572 Choosing the Right Exam Option 572 Summary 573 Part VI Appendixes 575
Appendix A Answers to the "Do I Know This Already?" Quizzes 577
Appendix B Decimal to Binary Conversion Table 591
Appendix C ICND1 Exam Updates: Version 1.0 595 |
|
Księgarnia informatyczna © ksiazki-informatyczne.pl
- cisco press , książka informatyczna - CCENT/CCNA ICND1 Official Exam Certification Guide 2e
|