CCNP BSCI Official Exam Certification Guide, Fourth Edition

CCNP BSCI Official Exam Certification Guide, Fourth Edition

by Brent D. Stewart, Clare Gough - CCIE No. 2893
Released July 2007
Publisher(s): Cisco Press
ISBN: 9781587201479

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Book description

CCNP BSCI Official Exam Certification Guide

Fourth Edition

  • Master all 642-901 exam topics with the official study guide

  • Assess your knowledge with chapter-opening quizzes

  • Review key concepts with foundation summaries

  • Practice with hundreds of exam questions on the CD-ROM

    • Brent D. Stewart

    Clare Gough, CCIE® No. 2893

    CCNP BSCI Official Exam Certification Guide, Fourth Edition, is a best of breed Cisco® exam study guide that focuses specifically on the objectives for the BSCI exam. Successfully passing the BSCI 642-901 exam certifies that you have the knowledge and skills necessary to use advanced IP addressing and routing in implementing scalability for Cisco integrated services routers (ISR) connected to LANs and WANs.

    CCNP BSCI Official Exam Certification Guide, Fourth Edition, follows a logical organization of the CCNP® BSCI exam objectives. Material is presented in a concise manner, focusing on increasing readers' retention and recall of exam topics. “Do I Know This Already?” quizzes open each chapter and allow you to determine how much time you need to spend on each section. Exam topic lists and Foundation Summary tables make referencing easy and give you a quick refresher whenever you need it. Scenario-based exercises help you think about exam objectives in real-world situations, thus increasing recall during exam time. Challenging chapter-ending review questions help you assess your knowledge and reinforce key concepts.

    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 module-by-module basis, presenting question-by-question remediation to the text.

    Well regarded for its level of detail, assessment features, and challenging review questions and exercises, this book helps you master the concepts and techniques that will enable you to succeed on the exam the first time.

    Brent D. Stewart, CCNP and certified Cisco instructor, is a network administrator at CommScope, where he focuses on the design and implementation of an international IP network. Brent has worked in fiber-optic manufacturing R&D and as a network consultant.

    Clare Gough, CCIE® No. 2893, is an instructor and a consultant with more than 18 years of practical experience in computer networking.

    The official study guide helps you master all the topics on the CCNP BSCI exam, including

  • Essential routing principles for designing and managing scalable networks

  • EIGRP, OSPF, and IS-IS functions and operation

  • Basic BGP configuration

  • Multicast routing

  • Cisco IOS® routing features, including redistribution, route filtering, and DHCP

  • IPv6 addressing and the transition from IPv4 to IPv6

    • Companion CD-ROM

    The CD-ROM contains an electronic copy of the book and more than 200 practice questions for the BSCI exam, including simulation-based questions, all available in study mode, test mode, and flash card format.

    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 Certification

    Covers: CCNP BSCI exam 642-901

    Table of contents

    1. Copyright
      1. Dedications
    2. About the Author
    3. About the Contributors
    4. About the Technical Reviewers
    5. Acknowledgments
    6. Icons Used in This Book
    7. Command Syntax Conventions
    8. Foreword
    9. Introduction
      1. Exam Overview
      2. Goals and Methods
      3. Who Should Read This Book?
      4. How This Book Is Organized
        1. Part I: Introduction to Scalable Networks
        2. Part II: EIGRP
        3. Part III: OSPF
        4. Part IV: IS-IS
        5. Part V: Cisco IOS Routing Features
        6. Part VI: BGP
        7. Part VII: Multicasting
        8. Part VIII: IPv6
        9. BSCI Exam Topics
      5. For More Information
    10. I. Introduction to Scalable Networks
      1. 1. Network Design
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Building Scalable Networks
            1. Scalability
            2. Multiplexing
          2. Enterprise Architecture
            1. Hierarchical Design Model
            2. Enterprise Composite Network Model
              1. Enterprise Campus
              2. Enterprise Edge
              3. Service Provider Edge
          3. SONA and IIN
            1. Phase 1: Integrated Transport
            2. Phase 2: Integrated Services
            3. Phase 3: Integrated Applications
            4. Services-Oriented Network Architecture
          4. Comparing Routing Protocols
            1. Distance Vector and Link State Routing Protocols
            2. Classless and Classful Routing
            3. Interior and Exterior Gateway Protocols
            4. Convergence Times
            5. Proprietary and Open Protocols
            6. Summarizing Routing Protocol Characteristics
        3. Foundation Summary
        4. Q&A
      2. 2. IP Address Planning and Summarization
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Understanding IP Addresses
            1. Reviewing IP
            2. Reviewing Binary Numbering Fundamentals
            3. Calculating Classfully Assumed Network Ranges
            4. Calculating Network Ranges Using Subnet Masks
          2. Understanding Summarization
            1. Summarization Advantages
            2. Summarization Solutions
            3. Address Planning
        3. Foundation Summary
        4. Q&A
    11. II. EIGRP
      1. 3. EIGRP Principles
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. EIGRP Features and Advantages
            1. Neighborship and Reliable Incremental Updates
            2. Neighbor Discovery and Recovery
            3. Sophisticated Metric
            4. DUAL
            5. Queries
            6. Additional EIGRP Advantages
              1. Incremental Updates
              2. Multicast Addressing for Updates
              3. Unequal-Cost Load Sharing
          2. Understanding EIGRP Tables
            1. Creating the Neighbor Table
              1. Contents of the Neighbor Table
              2. Becoming a Neighbor
            2. Creating the Topology Table
              1. Maintaining the Topology Table
              2. Adding a Network to the Topology Table
              3. Removing a Path or Router from the Topology Table
              4. Finding an Alternative Path to a Remote Network
            3. Creating the Routing Table
              1. EIGRP Path Selection
              2. Updating the Routing Table in Passive Mode with DUAL
              3. Updating the Routing Table in Active Mode with DUAL
          3. EIGRP Network Design
            1. EIGRP Design Issues
            2. Guideline to Address Scaling Issues
        3. Foundation Summary
        4. Q&A
      2. 4. Scalable EIGRP
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Configuring EIGRP
            1. Required Commands for Configuring EIGRP
            2. Optional Commands for Configuring EIGRP
              1. Summarization with EIGRP
              2. Stub Routers
              3. Load Balancing in EIGRP
              4. Tuning the EIGRP Process
                1. The Hello Timer
                2. The Hold Timer
              5. Authentication
            3. Optional EIGRP Commands over WANs
              1. EIGRP Defaults in Bandwidth Utilization
                1. Configuring Bandwidth over an NBMA Cloud
                2. Configuring Bandwidth over a Multipoint Network
                3. Configuring Bandwidth over a Hybrid Multipoint Network
              2. Configuring the Pure Point-to-Point Network
          2. Verifying the EIGRP Operation
            1. The show ip eigrp neighbors Command
            2. The show ip eigrp topology Command
            3. The show ip eigrp traffic Command
          3. Troubleshooting EIGRP
        3. Foundation Summary
        4. Q&A
        5. Scenarios
          1. Scenario 4-1
          2. Scenario 4-2
        6. Scenario Answers
          1. Scenario 4-1 Answers
          2. Scenario 4-2 Answers
    12. III. OSPF
      1. 5. Understanding Simple Single-Area OSPF
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Understanding OSPF Fundamentals
            1. OSPF Snapshot
            2. Neighbors and Adjacencies
            3. Designated Router and Backup Designated Router
            4. Multiple Areas
              1. Problems with OSPF in a Single Area
              2. Area Structure
              3. OSPF Packet Types
          2. Configuring OSPF in a Single Area
            1. Required Commands for Configuring OSPF Within a Single Area
              1. Enabling the OSPF Routing Protocol
              2. The OSPF network Command
            2. Configuration Options for an Internal Router
              1. Defining the Router ID and Loopback Interfaces
              2. Changing the Default Cost
              3. Determining the Designated Router Using the priority Command
            3. A Working Configuration of OSPF on a Single Router
          3. Checking the Configuration of Single-Area OSPF
            1. The show ip ospf Command
            2. The show ip ospf database Command
            3. The show ip ospf interface Command
            4. The show ip ospf neighbor Command
            5. The show ip protocols Command
            6. The show ip route Command
            7. The debug Commands
        3. Foundation Summary
        4. Q&A
        5. Scenarios
          1. Scenario 5-1
        6. Scenario Answers
          1. Scenario 5-1 Answers
      2. 6. OSPF Network Topologies
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. OSPF Network Topology Options
            1. Understanding the Differences Between OSPF Network Types
              1. Designated Routers and Topology Support
              2. Standards
              3. Neighbor Recognition
              4. Timers
            2. Subinterfaces
            3. Selecting an OSPF Design
          2. Configuring OSPF in a Nonbroadcast Environment
            1. Configuring OSPF with the Nonbroadcast OSPF Network Type
            2. Configuring the OSPF Point-to-Multipoint Network Type
            3. Configuring OSPF with the Broadcast Network Type
            4. Configuring OSPF with the Point-to-Point Network Type on a Frame Relay Subinterface
        3. Foundation Summary
        4. Q&A
      3. 7. Using OSPF Across Multiple Areas
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. The Purpose of Multi-area OSPF
          2. The Features of Multi-area OSPF
            1. Router Types
            2. Link-State Advertisements
            3. Different Types of Areas
          3. The Operation of Multi-area OSPF
            1. ABR LSA Propagation
            2. OSPF Path Selection Between Areas
            3. Calculating the Cost of a Path to Another Area
          4. Design Considerations in Multi-area OSPF
            1. Capacity Planning in OSPF
              1. Number of Neighbors per Router
              2. Number of Areas per ABR
            2. Summarization
            3. Virtual Links
            4. Multi-area OSPF Over an NBMA Network
          5. Required Configuration Commands for a Multi-area OSPF Network
            1. Enabling the OSPF Routing Protocol
            2. Enabling the network Command
          6. Optional Configuration Commands for a Multi-area OSPF Network
            1. The area range Command
            2. The summary-address Command
            3. The area stub Command
            4. The area area-id stub no-summary Command
            5. The area default-cost Command
            6. The area virtual-link Command
          7. Working Configuration of Multi-area OSPF
          8. Verifying the Configuration of OSPF in a Multi-area Network
            1. The show ip ospf border-routers Command
            2. The show ip route Command
            3. The show ip ospf virtual-links Command
            4. The show ip ospf database Command
          9. Troubleshooting a Multi-area OSPF Network
            1. The log-adjacency-changes Command
            2. Useful debug Commands
              1. The debug ip packet Command
              2. The debug ip ospf events Command
            3. Common Problems with Adjacencies
        3. Foundation Summary
        4. Q&A
        5. Scenarios
          1. Scenario 7-1
          2. Scenario 7-2
          3. Scenario 7-3
        6. Scenario Answers
          1. Scenario 7-1 Answers
          2. Scenario 7-2 Answers
          3. Scenario 7-3 Answers
      4. 8. OSPF Advanced Topics
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Special OSPF Areas
            1. Stub Areas
            2. Totally Stubby Areas
            3. Not-So-Stubby Areas
            4. Troubleshooting
          2. Configuring OSPF Authentication
            1. Plaintext Password Authentication
            2. Message Digest Authentication
        3. Foundation Summary
        4. Q&A
    13. IV. IS-IS
      1. 9. Fundamentals of the Integrated IS-IS Protocol
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Introduction to Integrated IS-IS
            1. Understanding the Lingo
            2. Network Layer Protocols Used in Integrated IS-IS
              1. Hellos
              2. LSP
          2. Comparing IS-IS and OSPF
            1. Areas
            2. LAN Topology
            3. Advertisements
            4. Encapsulation
            5. Future Development
          3. ISO Addressing for Integrated IS-IS
            1. NETs and NSAPs
            2. Rules of ISO Addressing
            3. Example of a NET Address
            4. Basic Principles of Area Routing
          4. IS-IS Adjacency
            1. Establishing Adjacencies on a Point-to-Point Link
            2. Establishing Adjacencies on a Broadcast Link
            3. Establishing Adjacencies on an NBMA Link
          5. Integrated IS-IS Operation
            1. The Update Process
              1. Sending and Receiving LSPs
                1. Propagating LSPs on a Point-to-Point Interface
                2. Propagating LSPs on a Broadcast Link
              2. Determining Whether the LSP in the Database Is Valid
            2. The Decision Process
          6. Integrated IS-IS Design Considerations
            1. Area Design of Integrated IS-IS Routers
            2. Route Summarization
            3. Integrated IS-IS NBMA Design Solutions
        3. Foundation Summary
        4. Q&A
      2. 10. Configuring Integrated IS-IS
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Basic Configuration of Integrated IS-IS
          2. Optional Integrated IS-IS Commands
            1. Changing the Router from Level 1-2
            2. Configuring Summarization
            3. Configuring NBMA
              1. Broadcast Configuration over NBMA
              2. Point-to-Point Configuration over NBMA
          3. Verifying the Integrated IS-IS Operation
            1. The show clns neighbors Command
            2. The show clns interface Command
            3. The show isis database Command
            4. The show isis database detail Command
          4. Troubleshooting the Integrated IS-IS Operation
            1. The show isis spf-log Command
            2. The debug Commands
        3. Foundation Summary
        4. Q&A
        5. Scenarios
          1. Scenario 10-1
          2. Scenario 10-2
        6. Scenario Answers
          1. Scenario 10-1 Answers
          2. Scenario 10-2 Answers
    14. V. Cisco IOS Routing Features
      1. 11. Implementing Redistribution and Controlling Routing Updates
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Understanding Redistribution Fundamentals
          2. Understanding the Routing Decisions That Affect Redistribution
            1. Routing Metrics and Redistribution
            2. Path Selection Between Routing Protocols
            3. Potential Problems with Redistribution
              1. Avoiding Routing Loops When Redistributing
              2. Avoiding Suboptimal Routing Decisions When Redistributing
              3. Avoiding Problems with Network Convergence When Redistributing
              4. Exchange of Routing Protocol-Specific Parameters
          3. Controlling Routing Updates During Redistribution
            1. Passive Interfaces
            2. Static Routes
            3. Default Routes
            4. The Null Interface
            5. Distribute Lists
            6. Route Maps
          4. Configuring Redistribution
            1. Redistribution Configuration Syntax
            2. Configuring the Default Metric
              1. Configuring the Default Metric for OSPF, IS-IS, RIP, or BGP
              2. Configuring the Default Metric for EIGRP
            3. Configuring the Administrative Distance
            4. Configuration Commands to Control Routing Updates in Redistribution
              1. Configuring the Passive Interface
              2. Configuring Static Routes
              3. Configuring Default Routes
            5. Redistribution Case Studies
              1. Example 1: Route Redistribution Without Redundant Paths
              2. Example 2: Route Redistribution with Redundant Paths
              3. Example 3: A Default Network in a Redistributed Environment
          5. Controlling Routing Updates with Filtering
          6. Verifying, Maintaining, and Troubleshooting the Redistribution and Filtering Implementation
            1. The traceroute Command
            2. The Extended ping Command
            3. Using traceroute and Extended ping
        3. Foundation Summary
        4. Q&A
        5. Scenario
          1. Scenario 11-1
        6. Scenario Answers
          1. Scenario 11-1 Answers
      2. 12. Controlling Redistribution with Route Maps
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Understanding Route Maps
            1. Route Map Characteristics
            2. Pseudo-code Example
          2. Configuring Route Maps
            1. The match Commands for Redistribution with Route-Maps
            2. The set Commands for Redistributing with Route-Maps
          3. Monitoring the Configuration of Route Maps and Redistribution
        3. Foundation Summary
        4. Q&A
      3. 13. Dynamic Host Control Protocol
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Understanding DHCP
          2. DHCP Roles
            1. Acting as a DHCP Server
            2. Acting as a DHCP Relay
            3. Acting as a DHCP Client
          3. Troubleshooting DHCP
        3. Foundation Summary
        4. Q&A
    15. VI. BGP
      1. 14. BGP Concepts
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Introduction to BGP
            1. The Context for BGP
              1. BGP Route Stability
              2. BGP Operation Basics
              3. BGP Record Keeping
              4. BGP and Hierarchy
            2. When to Use BGP
          2. Connecting to the Internet with BGP
            1. Redundant Connections to the Internet—Multihoming
            2. Receiving Routing Information from the Internet
          3. Synchronization
          4. BGP States
        3. Foundation Summary
        4. Q&A
      2. 15. BGP Neighbors
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Basic BGP Configuration Commands
            1. Enabling BGP
            2. Identifying Neighbors and Defining Peer Groups
            3. Source IP Address
            4. Forcing the Next-Hop Address
            5. Defining the Networks to Be Advertised
            6. Aggregating Routes
            7. Authentication
          2. Managing and Verifying the BGP Configuration
          3. Resetting Neighbors
        3. Foundation Summary
        4. Q&A
        5. Scenarios
          1. Scenario 15-1
          2. Scenario 15-2
          3. Scenario 15-3
        6. Scenario Answers
          1. Scenario 15-1 Answers
          2. Scenario 15-2 Answers
          3. Scenario 15-3 Answers
      3. 16. Controlling BGP Route Selection
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. BGP Attributes
          2. Controlling BGP Path Selection
            1. Using the Weight Attribute
            2. Using the Local-Preference Attribute
            3. Using the MED Attribute
          3. Verifying the Configuration of Attributes
        3. Foundation Summary
        4. Q&A
        5. Scenarios
          1. Scenario 16-1
        6. Scenario Answers
          1. Scenario 16-1 Answers
    16. VII. Multicasting
      1. 17. What Is Multicasting?
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. IP Styles of Addressing
            1. Unicasts
            2. Broadcasts
            3. Multicasts
            4. Video over IP Scenario
          2. Multicast Addressing
            1. Multicast MAC Addressing
            2. Multicast IP Addressing
          3. Current Multicast Use
            1. Multicast Applications
            2. Multicast Issues
        3. Foundation Summary
        4. Q&A
      2. 18. IGMP
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Data Link Layer Support for Multicast
          2. Understanding IGMP
            1. IGMPv1
            2. IGMPv2
              1. IGMPv2 Features
              2. IGMPv2 Operation
            3. IGMPv3
            4. Determining the Current IGMP Version
          3. Configuring IGMP
            1. IGMP Groups
            2. IGMP Snooping
        3. Foundation Summary
        4. Q&A
      3. 19. Configuring Multicast
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. The Central Multicast Problem
          2. Routing Multicast Traffic
            1. Reverse Path Forwarding
            2. Multicast Trees
              1. Distribution Trees
              2. Dense and Sparse Multicast Routing Protocols
            3. PIM
              1. PIM Dense Mode
              2. PIM Sparse Mode
              3. PIM Sparse-Dense Mode
              4. PIM Version 1
              5. PIM Version 2
          3. Enabling PIM Sparse-Dense Mode
            1. Setting Up Multicast Networking
              1. Enabling Multicast Routing
              2. Turning on PIM
              3. Configuring RPs
            2. Verifying Routes
            3. Verifying Neighbors
            4. Verifying Rendezvous Points
            5. Verifying Multicast Routing
        3. Foundation Summary
        4. Q&A
    17. VIII. IPv6
      1. 20. Introduction to IPv6 and IPv6 Addressing
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. Introduction to IPv6
            1. The Need for a Larger Address Space
            2. IPv6 Features
          2. The IPv6 Packet Header
            1. Checksum
            2. Fragmentation
            3. Flow Label
          3. IPv6 Addressing
            1. Representing IPv6 Addresses
            2. Types of IPv6 Addresses
            3. IPv6 Interface Identifiers
            4. IPv6 Unicast Addresses
              1. IPv6 Global Aggregatable Unicast Addresses
              2. IPv6 Link-Local Unicast Addresses
            5. IPv6 Anycast Addresses
            6. IPv6 Multicast Addresses
          4. IPv6 Address Assignment
            1. Stateless Autoconfiguration
            2. DHCPv6 and Stateless DHCPv6
          5. IPv6 Mobility
        3. Foundation Summary
        4. Q&A
        5. Scenarios
          1. Scenario 20-1
          2. Scenario 20-1 Answers
      2. 21. IPv6 Routing Protocols, Configuration, and Transitioning from IPv4
        1. “Do I Know This Already?” Quiz
        2. Foundation Topics
          1. IPv6 Routing Overview
            1. Static Routes
            2. RIPng
            3. EIGRP for IPv6
            4. IS-IS for IPv6
            5. MP-BGP4 for IPv6
            6. OSPFv3
              1. OSPFv2 and OSPFv3 Similarities
              2. OSPFv2 and OSPFv3 Differences
              3. OSPFv3 LSA Types
          2. Configuring and Verifying IPv6 and OSPFv3
            1. IPv6 Configuration
            2. OSPFv3 Configuration
            3. Verifying IPv6 and OSPFv3 Configuration
              1. show ipv6 route, clear ipv6, and ping ipv6 Commands
              2. show ipv6 interface Command
              3. show ipv6 ospf interface Command
              4. show ipv6 ospf Command
              5. show ipv6 ospf neighbor Command
              6. show ipv6 ospf database Command
          3. Transitioning from IPv4 to IPv6
            1. Dual Stack
            2. Tunneling
              1. Manual Tunnels
              2. IPv6-to-IPv4 (6-to-4) Tunnels
              3. Teredo
              4. ISATAP
            3. Translation
        3. Foundation Summary
        4. Q&A
        5. Scenarios
          1. Scenario 21-1
          2. Scenario 21-1 Answers
    18. A. Answers to Chapter “Do I Know This Already?” Quizzes and Q&A Sections
      1. Chapter 1
        1. “Do I Know This Already?”
        2. Q&A
      2. Chapter 2
        1. “Do I Know This Already?”
        2. Q&A
      3. Chapter 3
        1. “Do I Know This Already?”
        2. Q&A
      4. Chapter 4
        1. “Do I Know This Already?”
        2. Q&A
      5. Chapter 5
        1. “Do I Know This Already?”
        2. Q&A
      6. Chapter 6
        1. “Do I Know This Already?”
        2. Q&A
      7. Chapter 7
        1. “Do I Know This Already?”
        2. Q&A
      8. Chapter 8
        1. “Do I Know This Already?”
        2. Q&A
      9. Chapter 9
        1. “Do I Know This Already?”
        2. Q&A
      10. Chapter 10
        1. “Do I Know This Already?”
        2. Q&A
      11. Chapter 11
        1. “Do I Know This Already?”
        2. Q&A
      12. Chapter 12
        1. “Do I Know This Already?”
        2. Q&A
      13. Chapter 13
        1. “Do I Know This Already?”
        2. Q&A
      14. Chapter 14
        1. “Do I Know This Already?”
        2. Q&A
      15. Chapter 15
        1. “Do I Know This Already?”
        2. Q&A
      16. Chapter 16
        1. “Do I Know This Already?”
        2. Q&A
      17. Chapter 17
        1. “Do I Know This Already?”
        2. Q&A
      18. Chapter 18
        1. “Do I Know This Already?”
        2. Q&A
      19. Chapter 19
        1. “Do I Know This Already?”
        2. Q&A
      20. Chapter 20
        1. “Do I Know This Already?”
        2. Q&A
      21. Chapter 21
        1. “Do I Know This Already?”
        2. Q&A

    Product information

    • Title: CCNP BSCI Official Exam Certification Guide, Fourth Edition
    • Author(s): Brent D. Stewart, Clare Gough - CCIE No. 2893
    • Release date: July 2007
    • Publisher(s): Cisco Press
    • ISBN: 9781587201479