CCNA ICND2 Official Exam Certification Guide (CCNA Exams 640-816 and 640-802), 2/e
Wendell Odom
- 出版商: Cisco Press
- 出版日期: 2007-09-09
- 定價: $1,400
- 售價: 2.8 折 $399
- 語言: 英文
- 頁數: 744
- 裝訂: Hardcover
- ISBN: 158720181X
- ISBN-13: 9781587201813
-
相關分類:
Cisco
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Description
Master ICND1 640-822, ICND2 640-816 and CCNA 640-802 exam topics with the official study guides
Assess your knowledge with chapter-opening quizzes Review key concepts with Exam Preparation Tasks Practice with hundreds of exam questions on the CD-ROM
Includes 1 Hour of Video Training
Wendell Odom, CCIE® No. 1624
CCNA Official Exam Certification Library, Third Edition, is a comprehensive review and practice package for the latest CCNA® exams. The two books contained in this package, CCENT/CCNA ICND1 Official Exam Certification Guide, Second Edition, and CCNA ICND2 Official Exam Certification Guide, Second Edition, present complete reviews and a more challenging and realistic preparation experience. The books are updated to cover all the new 640-802 exam objectives, such as security, wireless, IPv6, and troubleshooting.
Best-selling author and senior instructor Wendell Odom shares preparation hints and test-taking tips, helping you to identify areas requiring further study and to improve your conceptual and hands-on knowledge. The material is presented in a concise manner, focusing on increasing your understanding of exam topics and preparing you for the numerous challenges the exams present.
CCNA Official Exam Certification Library, Third 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 drill you on key concepts you must know thoroughly and help increase your speed in answering questions, a difficult hurdle many candidates face on the new exams. Final Preparation chapters guide 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-ROMs contain 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 DVDs contain more than 60 minutes of personal video mentoring from the author focused mainly on the topic of subnetting. These videos help bring difficult subnetting concepts to life and make learning easy.
Well-regarded for its level of detail, assessment features, and challenging practice questions, this completely revised and updated edition 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.
CCNA Official Exam Certification Library, Third 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 also 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.
These official study guides help you master all the topics on the CCNA exams, including:
- TCP/IP and OSI networking models
- Operating Cisco routers and LAN switches
- Ethernet switch configuration and troubleshooting
- Virtual LANs and Spanning Tree Protocol
- Wireless LANs
- IP addressing and subnetting
- Routing protocols
- Router configuration and troubleshooting
- Static and connected routes
- VLSM and route summarization
- IP access control lists
- OSPF and EIGRP configuration
- WAN configuration and troubleshooting
- Frame Relay
- Network Security and VPNs
- NAT
- IPv6
- Troubleshooting
Companion CD-ROMs
The two CD-ROMs contain electronic copies of the books and 400 practice questions for the full CCNA, ICND1, and ICND2 exams, including simulation and testlet questions, all available in study mode, test mode, and flash card format.
BONUS DVDs
The two DVDs contain more than 60 minutes of personal video instruction from the author.
Supporting Web Site
Up-to-date study materials, the latest exam hints, and errata can be downloaded free at www.ciscopress.com/title/1587201836
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.
Table of Contents
158720181X
Foreword
Introduction
Part I: LAN Switching
Chapter 1 Virtual LANs
"Do I Know This Already?" Quiz 5
Foundation Topics 9
Virtual LAN Concepts
Trunking with ISL and 802.1Q
ISL
IEEE 802.1Q
ISL and 802.1Q Compared
IP Subnets and VLANs
VLAN Trunking Protocol (VTP)
Normal VTP Operation Using VTP Server and Client Modes
Three Requirements for VTP to Work Between Two Switches
Avoiding VTP by Using VTP Transparent Mode
Storing VLAN Configuration
VTP Versions
VTP Pruning
Summary of VTP Features
VLAN and VLAN Trunking Configuration and Verification
Creating VLANs and Assigning Access VLANs to an Interface
VLAN Configuration Example 1: Full VLAN Configuration
VLAN Configuration Example 2: Shorter VLAN Configuration
VLAN Trunking Configuration
Controlling Which VLANs Can Be Supported on a Trunk
Trunking to Cisco IP Phones
Securing VLANs and Trunking
VTP Configuration and Verification
Using VTP: Configuring Servers and Clients
Caveats When Moving Away from Default VTP Configuration
Avoiding VTP: Configuring Transparent Mode
Troubleshooting VTP
Determining Why VTP Is Not Currently Working
Problems When Connecting New Switches and Bringing Up Trunks
Avoiding VTP Problems Through Best Practices
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Command Reference to Check Your Memory
Chapter 2 Spanning Tree Protocol
"Do I Know This Already?" Quiz
Foundation Topics
Spanning Tree Protocol (IEEE 802.1d)
The Need for Spanning Tree
What IEEE 802.1d Spanning Tree Does
How Spanning Tree Works
The STP Bridge ID and Hello BPDU
Electing the Root Switch
Choosing Each Switch's Root Port
Choosing the Designated Port on Each LAN Segment
Reacting to Changes in the Network
Optional STP Features
EtherChannel
PortFast
STP Security
Rapid STP (IEEE 802.1w)
RSTP Link and Edge Types
RSTP Port States
RSTP Port Roles
RSTP Convergence
Edge-Type Behavior and PortFast
Link-Type Shared
Link-Type Point-to-Point
An Example of Speedy RSTP Convergence
STP Configuration and Verification
Multiple Instances of STP
Configuration Options That Influence the Spanning Tree Topology
The Bridge ID and System ID Extension
Per-VLAN Port Costs
STP Configuration Option Summary
Verifying Default STP Operation
Configuring STP Port Costs and Switch Priority
Configuring PortFast and BPDU Guard
Configuring EtherChannel
Configuring RSTP
STP Troubleshooting
Determining the Root Switch
Determining the Root Port on Nonroot Switches
Determining the Designated Port on Each LAN Segment
STP Convergence
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Command Reference to Check Your Memory
Chapter 3 Troubleshooting LAN Switching
"Do I Know This Already?" Quiz
Foundation Topics
Generalized Troubleshooting Methodologies
Analyzing and Predicting Normal Network Operation
Data Plane Analysis
Control Plane Analysis
Predicting Normal Operations: Summary of the Process
Problem Isolation
Root Cause Analysis
Real World Versus the Exams
Troubleshooting the LAN Switching Data Plane
An Overview of the Normal LAN Switch Forwarding Process
Step 1: Confirm the Network Diagrams Using CDP
Step 2: Isolate Interface Problems
Interface Status Codes and Reasons for Nonworking States
The notconnect State and Cabling Pinouts
Interface Speed and Duplex Issues
Step 3: Isolate Filtering and Port Security Problems
Step 4: Isolate VLAN and Trunking Problems
Ensuring That the Right Access Interfaces Are in the Right VLANs
Access VLANs Not Being Defined or Being Active
Identify Trunks and VLANs Forwarded on Those Trunks
Example: Troubleshooting the Data Plane
Step 1: Verify the Accuracy of the Diagram Using CDP
Step 2: Check for Interface Problems
Step 3: Check for Port Security Problems
Step 4: Check for VLAN and VLAN Trunk Problems
Predicting Normal Operation of the LAN Switching Data Plane
PC1 Broadcast in VLAN 1
Forwarding Path: Unicast from R1 to PC1
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Part II: IP Routing
Chapter 4 IP Routing: Static and Connected Routes
"Do I Know This Already?" Quiz
Foundation Topics
IP Routing and Addressing
IP Routing
IP Addressing and Subnetting
IP Forwarding by Matching the Most Specific Route
DNS, DHCP, ARP, and ICMP
Fragmentation and MTU
Routes to Directly Connected Subnets
Secondary IP Addressing
Supporting Connected Routes to Subnet Zero
ISL and 802.1Q Configuration on Routers
Static Routes
Configuring Static Routes
The Extended ping Command
Static Default Routes
Default Routes Using the ip route Command
Default Routes Using the ip default-network Command
Default Route Summary
Classful and Classless Routing
Summary of the Use of the Terms Classless and Classful
Classless and Classful Routing Compared
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Command Reference to Check Your Memory
Chapter 5 VLSM and Route Summarization
"Do I Know This Already?" Quiz
Foundation Topics
VLSM
Classless and Classful Routing Protocols
Overlapping VLSM Subnets
Designing a Subnetting Scheme Using VLSM
Adding a New Subnet to an Existing Design
VLSM Configuration
Manual Route Summarization
Route Summarization Concepts
Route Summarization Strategies
Sample "Best" Summary on Seville
Sample "Best" Summary on Yosemite
Autosummarization and Discontiguous Classful Networks
An Example of Autosummarization
Discontiguous Classful Networks
Autosummarization Support and Configuration
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Read Appendix F Scenarios
Command Reference to Check Your Memory
Chapter 6 IP Access Control Lists
"Do I Know This Already?" Quiz
Foundation Topics
Standard IP Access Control Lists
IP Standard ACL Concepts
Wildcard Masks
A Quicker Alternative for Interpreting Wildcard Masks
Standard IP Access List Configuration
Standard IP ACL: Example 1
Standard IP ACL: Example 2
Extended IP Access Control Lists
Extended IP ACL Concepts
Matching TCP and UDP Port Numbers
Extended IP ACL Configuration
Extended IP Access Lists: Example 1
Extended IP Access Lists: Example 2
Advances in Managing ACL Configuration
Named IP Access Lists
Editing ACLs Using Sequence Numbers
Miscellaneous ACL Topics
Controlling Telnet and SSH Access with ACLs
ACL Implementation Considerations
Reflexive Access Lists
Dynamic ACLs
Time-Based ACLs
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Read the Appendix F Scenarios
Definitions of Key Terms
Command Reference to Check Your Memory
Chapter 7 Troubleshooting IP Routing
"Do I Know This Already?" Quiz
Foundation Topics
The ping and traceroute Commands
Internet Control Message Protocol (ICMP)
The ping Command and the ICMP Echo Request and Echo Reply
The Destination Unreachable ICMP Message
The Redirect ICMP Message
The ICMP Time Exceeded Message
The traceroute Command
Troubleshooting the Packet Forwarding Process
Isolating IP Routing Problems Related to Hosts
Isolating IP Routing Problems Related to Routers
Troubleshooting Scenario 1: Forward Route Problem
Troubleshooting Scenario 2: Reverse Route Problem
An Alternative Problem Isolation Process for Steps 3, 4, and 5
Troubleshooting Tools and Tips
Host Routing Tools and Perspectives
Host Troubleshooting Tips
LAN Switch IP Support
show ip route Reference
Interface Status
VLSM Issues
Recognizing When VLSM Is Used
Configuring Overlapping VLSM Subnets
Symptoms with Overlapping Subnets
VLSM Troubleshooting Summary
Discontiguous Networks and Autosummary
Access List Troubleshooting Tips
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Part III: Routing Protocols Configuration and Troubleshooting
Chapter 8 Routing Protocol Theory
"Do I Know This Already?" Quiz
Foundation Topics
Dynamic Routing Protocol Overview
Routing Protocol Functions
Interior and Exterior Routing Protocols
Comparing IGPs
IGP Routing Protocol Algorithms
Metrics
IGP Comparisons: Summary
Administrative Distance
Distance Vector Routing Protocol Features
The Concept of a Distance and a Vector
Distance Vector Operation in a Stable Network
Distance Vector Loop Prevention
Route Poisoning
Problem: Counting to Infinity over a Single Link
Split Horizon
Poison Reverse and Triggered Updates
Problem: Counting to Infinity in a Redundant Network
The Holddown Process and Holddown Timer
Distance Vector Summary
Link-State Routing Protocol Features
Building the Same LSDB on Every Router
Applying Dijkstra SPF Math to Find the Best Routes
Convergence with Link-State Protocols
Summary and Comparisons to Distance Vector Protocols
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Command Reference to Check Your Memory
Chapter 9 OSPF
"Do I Know This Already?" Quiz
Foundation Topics
OSPF Protocols and Operation
OSPF Neighbors
Identifying OSPF Routers with a Router ID
Meeting Neighbors by Saying Hello
Potential Problems in Becoming a Neighbor
Neighbor States
OSPF Topology Database Exchange
Overview of the OSPF Database Exchange Process
Choosing a Designated Router
Database Exchange
Maintaining the LSDB While Being Fully Adjacent
Summary of Neighbor States
Building the IP Routing Table
Scaling OSPF Through Hierarchical Design
OSPF Areas
OSPF Area Design Advantages
OSPF Configuration
OSPF Single-Area Configuration
OSPF Configuration with Multiple Areas
Configuring the OSPF Router ID
OSPF Hello and Dead Timers
OSPF Metrics (Cost)
OSPF Authentication
OSPF Load Balancing
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Command Reference to Check Your Memory
Chapter 10 EIGRP
"Do I Know This Already?" Quiz
Foundation Topics
EIGRP Concepts and Operation
EIGRP Neighbors
Exchanging EIGRP Topology Information
Calculating the Best Routes for the Routing Table
Feasible Distance and Reported Distance
Caveats with Bandwidth on Serial Links
EIGRP Convergence
EIGRP Successors and Feasible Successors
The Query and Reply Process
EIGRP Summary and Comparisons with OSPF
EIGRP Configuration and Verification
Basic EIGRP Configuration
EIGRP Metrics, Successors, and Feasible Successors
Creating and Viewing a Feasible Successor Route
Convergence Using the Feasible Successor Route
EIGRP Authentication
EIGRP Maximum Paths and Variance
Tuning the EIGRP Metric Calculation
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Command Reference to Check Your Memory
Chapter 11 Troubleshooting Routing Protocols
"Do I Know This Already?" Quiz
Foundation Topics
Perspectives on Troubleshooting Routing Protocol Problems
Interfaces Enabled with a Routing Protocol
EIGRP Interface Troubleshooting Example
OSPF Interface Troubleshooting Example
Neighbor Relationships
EIGRP Neighbor Requirements
OSPF Neighbor Requirements
OSPF Neighbor Example 1
OSPF Neighbor Example 2
The MTU Matching Requirement
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Command Reference to Check Your Memory
Part IV: Wide-Area Networks
Chapter 12 Point-to-Point WANs
"Do I Know This Already?" Quiz
Foundation Topics
PPP Concepts
The PPP Protocol Field
PPP Link Control Protocol (LCP)
Looped Link Detection
Enhanced Error Detection
PPP Multilink
PPP Authentication
PPP Configuration
Basic PPP Configuration
CHAP Configuration and Verification
PAP Configuration
Troubleshooting Serial Links
Troubleshooting Layer 1 Problems
Troubleshooting Layer 2 Problems
Keepalive Failure
PAP and CHAP Authentication Failure
Troubleshooting Layer 3 Problems
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Command Reference to Check Your Memory
Chapter 13 Frame Relay Concepts
"Do I Know This Already?" Quiz
Foundation Topics
Frame Relay Overview
Frame Relay Standards
Virtual Circuits
LMI and Encapsulation Types
Frame Relay Addressing
Frame Relay Local Addressing
Frame Relay Global Addressing
Network Layer Concerns with Frame Relay
Frame Relay Layer 3 Addressing: One Subnet Containing All Frame Relay DTEs
Frame Relay Layer 3 Addressing: One Subnet Per VC
Frame Relay Layer 3 Addressing: Hybrid Approach
Layer 3 Broadcast Handling
Controlling Speed and Discards in the Frame Relay Cloud
FECN and BECN
The Discard Eligibility (DE) Bit
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Chapter 14 Frame Relay Configuration and Troubleshooting
"Do I Know This Already?" Quiz
Foundation Topics
Frame Relay Configuration and Verification
Planning a Frame Relay Configuration
A Fully Meshed Network with One IP Subnet
Configuring the Encapsulation and LMI
Frame Relay Address Mapping
Inverse ARP
Static Frame Relay Mapping
A Partially Meshed Network with One IP Subnet Per VC
Assigning a DLCI to a Particular Subinterface
Comments About Global and Local Addressing
Frame Relay Verification
A Partially Meshed Network with Some Fully Meshed Parts
Frame Relay Troubleshooting
A Suggested Frame Relay Troubleshooting Process
Layer 1 Issues on the Access Link (Step 1)
Layer 2 Issues on the Access Link (Step 2)
PVC Problems and Status (Step 3)
Find the Connected Subnet and Outgoing Interface (Steps 3a and 3b)
Find the PVCs Assigned to That Interface (Step 3c)
Determine Which PVC Is Used to Reach a Particular Neighbor (Step 3d)
PVC Status
Subinterface Status
Frame Relay Mapping Issues (Step 4)
End-to-End Encapsulation (Step 5)
Mismatched Subnet Numbers (Step 6)
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Read the Appendix F Scenarios
Command Reference to Check Your Memory
Chapter 15 Virtual Private Networks
"Do I Know This Already?" Quiz
Foundation Topics
VPN Fundamentals
IPsec VPNs
IPsec Encryption
IPsec Key Exchange
IPsec Authentication and Message Integrity
The ESP and AH Security Protocols
IPsec Implementation Considerations
SSL VPNs
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Part V: Scaling the IP Address Space
Chapter 16 Network Address Translation
"Do I Know This Already?" Quiz
Foundation Topics
Perspectives on IPv4 Address Scalability
CIDR
Route Aggregation for Shorter Routing Tables
IPv4 Address Conservation
Private Addressing
Network Address Translation Concepts
Static NAT
Dynamic NAT
Overloading NAT with Port Address Translation (PAT)
Translating Overlapping Addresses
NAT Configuration and Troubleshooting
Static NAT Configuration
Dynamic NAT Configuration
NAT Overload (PAT) Configuration
NAT Troubleshooting
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Command Reference to Check Your Memory
Chapter 17 IP Version 6
"Do I Know This Already?" Quiz
Foundation Topics
Global Unicast Addressing, Routing, and Subnetting
Global Route Aggregation for Efficient Routing
Conventions for Representing IPv6 Addresses
Conventions for Writing IPv6 Prefixes
Global Unicast Prefix Assignment Example
Subnetting Global Unicast IPv6 Addresses Inside an Enterprise
Prefix Terminology
IPv6 Protocols and Addressing
DHCP for IPv6
IPv6 Host Address Assignment
The IPv6 Interface ID and EUI-64 Format
Static IPv6 Address Configuration
Stateless Autoconfiguration and Router Advertisements
IPv6 Address Configuration Summary
Discovering the Default Router with NDP
Learning the IP Address(es) of DNS Servers
IPv6 Addresses
Unicast IPv6 Addresses
Multicast and Other Special IPv6 Addresses
Summary of IP Protocols and Addressing
Configuring IPv6 Routing and Routing Protocols
IPv6 Routing Protocols
IPv6 Configuration
IPv6 Transition Options
IPv4/IPv6 Dual Stacks
Tunneling
Translating Between IPv4 and IPv6 with NAT-PT
Transition Summary
Exam Preparation Tasks
Review All the Key Topics
Complete the Tables and Lists from Memory
Definitions of Key Terms
Command Reference to Check Your Memory
Part VI: Final Preparation
Chapter 18 Final Preparation
Tools for Final Preparation
Exam Engine and Questions on the CD
Install the Software from the CD
Activate and Download the Practice Exam
Activating Other Exams
The Cisco CCNA Prep Center
Subnetting Videos, Reference Pages, and Practice Problems
Scenarios
Study Plan
Recall the Facts
Practice Subnetting
Build Troubleshooting Skills Using Scenarios
Use the Exam Engine
Choosing Study or Simulation Mode
Choosing the Right Exam Option
Summary
Part VII: Appendixes
Appendix A Answers to the "Do I Know This Already?" Quizzes
Chapter 1
Chapter 2
Chapter 4
Chapter 5
Chapter 6
Chapter 8
Chapter 9
Chapter 10
Chapter 12
Chapter 13
Chapter 14
Chapter 15
Chapter 16
Chapter 17
Appendix B Decimal to Binary Conversion Table
Appendix C ICND2 Exam Updates: Version 1.0
Glossary
Index
Part VIII: CD-Only
Appendix D Subnetting Practice
Appendix E Subnetting Reference Pages
Appendix F Additional Scenarios
Appendix G Video Scenario Reference
Appendix H ICND1 Chapter 12: IP Addressing and Subnetting
Appendix I ICND1 Chapter 17: WAN Configuration
Appendix J Memory Tables
Appendix K Memory Tables Answer Key
Appendix L ICND2 Open-Ended Questions
1587201828
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
商品描述(中文翻譯)
描述
使用官方學習指南掌握ICND1 640-822、ICND2 640-816和CCNA 640-802考試主題
- 通過章節開始的測驗評估您的知識
- 通過考試準備任務回顧關鍵概念
- 在CD-ROM上練習數百個考試題目包含1小時的視頻培訓
Wendell Odom, CCIE® No. 1624
《CCNA官方考試認證圖書館》第三版是最新CCNA考試的全面評估和練習套件。該套件包含的兩本書,即《CCENT/CCNA ICND1官方考試認證指南》第二版和《CCNA ICND2官方考試認證指南》第二版,提供了完整的評估和更具挑戰性和現實性的準備體驗。這些書籍已更新,涵蓋了所有新的640-802考試目標,如安全、無線、IPv6和故障排除。
暢銷作家和高級講師Wendell Odom分享了準備提示和應試技巧,幫助您識別需要進一步學習的領域,提高您的概念和實踐知識。該材料以簡潔的方式呈現,重點是增加您對考試主題的理解,為您應對考試中的眾多挑戰做好準備。
《CCNA官方考試認證圖書館》第三版通過使用經過驗證的系列元素和技巧,為您提供了有組織的考試準備流程。每章的“我是否已經知道這個”測驗讓您決定需要花多少時間在每個部分上。章節結束的考試準備任務部分幫助您深入研究必須全面了解的關鍵概念,並提高您回答問題的速度,這是許多考生在新考試中面臨的困難障礙。最後的準備章節指導您使用工具和資源,幫助您制定最終的學習計劃。特殊的故障排除部分幫助您掌握考試中將面臨的複雜情境。
附帶的CD-ROM包含一個強大的測試引擎,讓您專注於個別主題領域或進行完整的定時考試。評估引擎還會根據章節提供的問題進行性能跟踪和反饋。
額外的DVD包含作者超過60分鐘的個人視頻指導,主要關注子網劃分的主題。這些視頻幫助您更好地理解困難的子網劃分概念,使學習變得容易。
這本完全修訂和更新的書籍以其詳細程度、評估功能和具有挑戰性的練習問題而受到好評,提供了比任何其他CCNA學習指南更詳細的信息和更現實的練習習題,使您能夠在第一次考試中取得成功。
《CCNA官方考試認證圖書館》第三版是推薦的學習路徑的一部分。
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