Cisco QOS Exam Certification Guide (IP Telephony Self-Study), 2nd Edition

Product Description

Official self-study test preparation guide for the Cisco QOS 642-642 exam. The official study guide helps you master all the topics on the QOS exam, including

• QoS concepts, tools, and architectures
• Modular QoS CLI (MQC), QoS Policy Manager (QPM), and AutoQoS
• Classification and marking
• Congestion management
• Traffic shaping and policing
• Congestion avoidance through drop policies
• Compression tools and link fragmentation and interleaving (LFI) tools for link efficiency
• LAN QoS
• QoS best practices

The CCVP certification validates a robust set of skills in implementing, operating, configuring, and troubleshooting a converged IP network. A solid understanding of quality-of-service (QoS) features and implementation is essential for CCVP certification and is also a core component of the CCIP® certification.

Cisco QOS Exam Certification Guide, Second Edition, is a best-of-breed Cisco® exam study guide that focuses specifically on the objectives for the QOS 642-642 exam. Senior instructor and best-selling author Wendell Odom and senior AVVID consultant Michael Cavanaugh share preparation hints and test-taking tips, helping you identify areas of weakness and improve your QoS knowledge. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics.

Cisco QOS 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. Exam topic lists and Foundation Summary tables, figures, and snapshot information make referencing easy and give you a quick refresher whenever you need it. 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.

Cisco QOS Exam Certification Guide, Second Edition, is part of a recommended learning path from Cisco Systems® 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.

Companion CD-ROM

The companion CD-ROM contains a test bank with more than 300 practice questions, flash card format questions, and an electronic version of the text.

CD-ROM test engine powered by www.boson.com. Boson Software is a Cisco Learning Partner.

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.

Downloads

Download - 18.6 MB -- Software Patch: Upgrade to version 1.1

The patch that is available for download from this link will update the content on the Cisco QOS Exam Certification Guide CD-ROM test engine to the most current version of the software: version 1.1. Please download this patch if your product contains CD-ROM version 1.0. If your CD-ROM is labeled version 1.1, there is no need to download this patch; you have the most up-to-date version. For the test engine patch to take effect, you must have the previous version of the software installed on your computer.

Customer Reviews

9 of 9 people found the following review helpful Best-of-class book at implementing QoS, February 4, 2006 By  Sean E. Connelly "Just a bithead - CCIE#17085" (Alexandria, VA) - See all my reviews    This review is from: Cisco QOS Exam Certification Guide (IP Telephony Self-Study) (2nd Edition) (Hardcover) CiscoPress's "Cisco QoS - Exam Certification Guide" 2nd Edition by Odom and Cavanaugh is marketed for the QoS 642-642 exam. In reality, this book is an excellent resource for both real-world implementations and for the CCIE R&S exam. Typically, QoS is not a subject that would keep me engaged, but this book does just that. The writing style is crisp, clean and succinct. The book jumps right out of the gate at explaining, in very easy to understand terms, the underpinnings of QoS and also the enemies of QoS (Bandwidth, Delay, Jitter and Loss). The book next discusses the different tools for QoS (classifying and marking, queuing, shaping, congestion avoidance and link efficiency). This is the bulk of the book and where the book most shines. The diagrams and configs greatly enhance the discussions of the various QoS techniques. The book finishes up by discussing the nuances of LAN QoS (particularly CoS and DSCP) and best practices. Items I find of particular... Read more Help other customers find the most helpful reviews  Was this review helpful to you?  Report abuse | Permalink  Comment 8 of 9 people found the following review helpful Very happy with 1st 100 pages, April 6, 2005 By  mark hurley (Sydney) - See all my reviews This review is from: Cisco QOS Exam Certification Guide (IP Telephony Self-Study) (2nd Edition) (Hardcover) OK, so I'm impatient to mouth-off. I've only read the 1st 100 pages but I'm so impressed, I want to tell you. I just want to know about QoS. Exam is much lower priority. I really like the language used in this book ... it resonates with me. I also like the fact that several different ways are sometimes used to describe something. This confirms my understanding & if I don't understand the 1st way of explaining it, it gives me another chance. When different terms mean the same thing, this is explained. This is great since this is a major source of confusion in IT. The plentitude of diagrams helps clarity. This book is very considerate of the user ... not just dumping immature thoughts on a page like so many comms. books. I generally have developed a negative impression of CiscoPress books (eg. the MPLS 'bible') but this helps recover this. One little bit of feedback is that I find packet flows from right a left a bit... Read more Help other customers find the most helpful reviews  Was this review helpful to you?  Report abuse | Permalink  Comment 5 of 5 people found the following review helpful Absolutely the benchmark of excellence, August 1, 2005 By  Jeff W (Australia) - See all my reviews This review is from: Cisco QOS Exam Certification Guide (IP Telephony Self-Study) (2nd Edition) (Hardcover) The authors absolutely produced a gem in this Cisco QoS Exam Certification Guide. Whilst I used the book primarily to pass the 642-642 QoS exam, this book can definitely serve as a reference to anyone remotely doing anything with QoS. The authors explain the concepts in a easy-to-follow manner, and follow each concept up with at least 1 or more examples that complement the concept and re-inforce learning. Compared to other Cisco Press books, this book is engaging, covers the concept in depth, has good examples, and has relatively fewer errors. Therefore I give it 5-years, which it richly deserves. After reading the book once I sat and passed the 642-642 with flying colors. This is how good the book is. I now also feel confident about the QoS section on the CCIE written exam. Help other customers find the most helpful reviews  Was this review helpful to you?  Report abuse | Permalink  Comment

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Praise For Cisco QOS Exam Certification Guide (IP Telephony Self-Study), 2nd Edition

Cisco QoS Exam Certification Guide, Second Ed.
Reviewer Name: Tim Roberts
Reviewer Certification: CCNP

Cisco QoS Exam Certification Guide by Wendell Odom and Michael J. Cavanaugh is a good book for anyone who needs a reference guide for QoS.

The first thing that I noticed about this book is that the format is completely different from any other Cisco Press book I have read. This includes the diagrams and topologies, as well as the text formatting. I found that the new format made the book a little difficult to follow but that might just be due to my familiarity with the previous format.

What I found the most useful was the configurations that were presented. They allowed me to see what the exact configurations looked like for specific QoS methods. This came in very handy when it came time to plan an implementation. This alone makes this book a must have for the reference library. The reader is going to need to make sure that they have a good grasp of networking basics in order to understand a lot of the concepts presented. The book does not spend that much time providing background on basic networking concepts.

This title is designed to be a self-study certification guide for the Cisco 642-642 QoS exam. Each chapter of the book covers specific exam topics. In the beginning of each chapter there is a "Do I Know This Already?" quiz. This enables the reader to gauge their existing knowledge to know whether or not they need to study the section. There are questions at the end of each chapter to assess what the reader has learned and to reinforce key topics.

A CD-ROM is included with the book. This CD-ROM contains both an electronic version of the book as well as a testing engine that can be used to prepare for the certification exam. The testing engine allows the user to take a timed exam and access what areas they are strong and weak in. This will allow users to validate their knowledge in the concepts and techniques that were presented in the book.

The final chapter in the book covers Cisco's recommended best practices. I found this book the most informational because it illustrated the recommended way to tie all of the QoS technologies together. After all, most networks will have more than one type of QoS implemented.

The one thing that I thought this book was missing was some type of practice labs. It is after all a "self-study" book. The user could try to perform some of the examples that are presented in the book. It would have been nice to see some well put together labs that really drive home the configuration and functionality of each QoS method.

Overall, I would have to say that this is a good book for those looking to learn more about QoS technologies. As long as you have a good networking foundation you will learn a lot from this book.

Index

Download - 993 KB -- Index

Appendix

This material is taken from Appendix B: Additional QoS Reference Materials found on the companion CD-ROM. Note that material in the CD appendixes may include knowledge such as QPPB that is necessary to know in order to be successful on the QOS exam.

QoS Policy Propagation with BGP (QPPB)

Table of Contents

Introduction.

1. QoS Overview.

    "Do I Know This Already?" Quiz.

      QoS: Tuning Bandwidth, Delay, Jitter, and Loss Questions.

      Traffic Characteristics of Voice, Video, and Data Questions.

      Planning and Implementing QoS Policies.

    Foundation Topics.

    QoS: Tuning Bandwidth, Delay, Jitter, and Loss.

      Bandwidth.

      Delay.

      Jitter.

      Loss.

      Summary: QoS Characteristics: Bandwidth, Delay, Jitter, and Loss.

    Traffic Characteristics of Voice, Video, and Data.

      Voice Traffic Characteristics.

      Video Traffic Characteristics.

      Data Traffic Characteristics.

    Planning and Implementing QoS Policies.

      Step 1: Identify Traffic and Its Requirements.

      Step 2: Divide Traffic into Classes.

       Step 3: Define Policies for Each Traffic Class.

    Foundation Summary.

    Q&A.

2. QoS Tools and Architectures.

    "Do I Know This Already?" Quiz.

      QoS Tools Questions.

      Classifying Using Flows or Service Classes Questions.

       The Differentiated Services QoS Model Questions.

      The Integrated Services QoS Model Questions.

    Foundation Topics.

    Introduction to IOS QoS Tools.

      Classification and Marking.

      Queuing.

      Shaping and Policing.

      Congestion Avoidance.

      Link Efficiency.

      Call Admission Control.

    Classifying Using Flows or Service Classes.

      Flow-Based QoS.

      Class-Based QoS.

      Proper Planning and Marking for Enterprises and Service Providers.

    The Differentiated Services QoS Model.

      DiffServ Specifications and Terminology.

      DiffServ Per-Hop Behaviors.

    The Integrated Services QoS Model.

      Comparison of the Three QoS Models.

    Foundation Summary.

    Q&A.

3. MQC, QPM, and AutoQoS.

    "Do I Know This Already?" Quiz Questions.

      Cisco Modular QoS CLI.

      The Cisco QoS Policy Manager.

      The Cisco AutoQoS Feature.

      Comparisons of CLI, MQC, and AutoQoS.

    Foundation Topics.

    Cisco Modular QoS CLI.

      The Mechanics of MQC.

      Classification Using Class Maps.

      Performing QoS Actions (PHBs) Using policy-map Commands.

      Enabling a Policy Map Using service-policy.

      Show Commands for MQC.

    QoS Policy Manager (QPM).

      SNMP Support for QoS.

    Cisco AutoQoS Feature.

      AutoQoS VoIP for Routers.

      AutoQoS VoIP for Cisco IOS Switches.

      AutoQoS VoIP for 6500 Cat-OS.

    Comparisons of CLI, MQC, and AutoQoS.

    Foundation Summary.

    For Further Reading.

    Q&A.

4. Classification and Marking.

    "Do I Know This Already?" Quiz Questions.

      Classification and Marking Concepts Questions.

      Classification and Marking Tools Questions.

      Classification Issues when Using VPNs Questions.

    Foundation Topics.

    Classification and Marking Concepts.

      Classification.

      Marking.

      Classification and Marking Design Choices.

    Classification and Marking Tools.

      Class-Based Marking (CB Marking) Configuration.

      Miscellaneous Features of Class-Based Marking.

    Classification Issues when Using VPNs.

      Classification and Marking Before Entering the VPN Tunnel.

      Classification and Marking on the Router Creating the VPN Tunnel.

      Configuring QoS Pre-classification.

    Foundation Summary.

    For Further Reading.

    Q&A.

5. Congestion Management.

    "Do I Know This Already?" Quiz.

      Cisco Router Queuing Concepts Questions.

      Scheduling Concepts: FIFO, PQ, CQ, and MDRR Questions.

      Concepts and Configuration: WFQ, CBWFQ, and LLQ Questions.

    Foundation Topics.

    Cisco Router Queuing Concepts.

      Software Queues and Hardware Queues.

      Queuing on Interfaces Versus Subinterfaces and Virtual Circuits (VCs).

      Summary of Queuing Concepts.

    Scheduling Concepts: FIFO, PQ, CQ, and MDRR.

      FIFO Queuing.

      Priority Queuing.

      Custom Queuing.

      Modified Deficit Round-Robin.

    Concepts and Configuration: WFQ, CBWFQ, and LLQ.

      Weighted Fair Queuing (WFQ).

      Class-Based WFQ (CBWFQ).

      Low Latency Queuing (LLQ).

      Comparisons of WFQ, CBWFQ, and LLQ.

    Foundation Summary.

    For Further Reading.

    Q&A.

6. Traffic Policing and Shaping.

    "Do I Know This Already?" Quiz.

      Shaping and Policing Concepts Questions.

      Configuring Class-Based Shaping.

      Configuring Class-Based Policing.

    Foundation Topics.

    Traffic Policing and Traffic Shaping Concepts.

      When and Where to Use Shaping and Policing.

      How Shaping Works.

      How Policing Works.

       Summary of CB Policing Mechanics.

    Class-Based Shaping Configuration.

      Setting Bc to Tune Tc.

      Tuning Shaping for Voice Using LLQ and a Small Tc.

      Shaping to a Peak Rate.

      Miscellaneous CB Shaping Configuration: Adaptive Shaping.

      Miscellaneous CB Shaping Configuration: Shaping by Percent.

      Comparing CB Shaping and FRTS.

    Class Based Policing Configuration.

      Policing a Subset of the Traffic.

      Configuring Dual-Rate Policing.

      CB Policing Miscellany.

       CB Policing Configuration Summary.

    Foundation Summary.

    Q&A.

7. Congestion Avoidance Through Drop Policies.

    "Do I Know This Already?" Quiz.

      Congestion-Avoidance Concepts and RED Questions.

      WRED Questions.

      ECN Questions.

    Foundation Topics.

    Congestion-Avoidance Concepts and Random Early Detection (RED).

      TCP and UDP Reactions to Packet Loss.

      Tail Drop, Global Synchronization, and TCP Starvation.

      Random Early Detection (RED).

    Weighted RED (WRED).

      How WRED Weights Packets.

      WRED and Queuing.

      WRED Configuration.

      WRED Summary.

    Explicit Congestion Notification.

      ECN Concepts.

      ECN Configuration.

    Foundation Summary.

    Q&A.

8. Link Efficiency Tools.

    "Do I Know This Already?" Quiz.

      Compression Questions.

      Link Fragmentation and Interleave Questions.

    Foundation Topics.

    Payload and Header Compression.

      Header Compression.

      Class-Based TCP and RTP Header Compression Configuration.

     Link Fragmentation and Interleaving.

      Multilink PPP LFI.

      Frame Relay LFI Using FRF.12.

      Multilink PPP Interleaving Configuration.

      Frame Relay Fragmentation Configuration.

      MLP LFI and FRF.12 Configuration: The Short Version.

    Foundation Summary.

    Compression Tools.

    LFI Tools.

    Q&A.

9. LAN QoS.

    "Do I Know This Already?" Quiz.

      Classification and Marking.

      Congestion Management.

      Policing.

      AutoQoS.

    Foundation Topics.

    The Need for QoS on the LAN.

      Buffer Overflow (Overrun).

    The Cisco Catalyst 2950.

    Classification and Marking.

      Layer 2 Header Classification and Marking.

      Layer 3 Header Classification and Marking.

      Layer 2-to-Layer 3 Mapping.

      Trust Boundaries.

      Using MQC for Classification and Marking.

    Congestion Management.

      Strict Priority Scheduling.

      WRR Scheduling.

      Strict Priority and WRR Scheduling.

    Policing.

    AutoQoS.

    Foundation Summary.

    For Further Reading.

    Q&A.

10. Cisco QoS Best Practices.

    "Do I Know This Already?" Quiz.

    Foundation Topics.

    The Need for QoS Best Practices.

    End-to-End QoS.

    QoS Service Level Agreements.

    Application Requirements for QoS.

      Voice Traffic.

      Video Traffic.

      Data Traffic.

    QoS Best Practices Methodology.

      Classification and Marking Best Practices.

      Congestion Management Best Practices.

      Congestion Avoidance Best Practices.

      Policing Best Practices.

    QoS Case Studies.

      Enterprise Campus QoS Implementations.

      Enterprise (CE) to Service Provider (PE) WAN QoS Implementations.

      Service Provider (PE) to Enterprise (CE) WAN QoS Implementations.

      Service Provider Backbone QoS Implementations.

    Foundation Summary.

    For Further Reading.

    Q&A.

      Appendix A Answers to the "Do I Know This Already?"

      Quizzes and Q & A Sections.

    Chapter 1.

      "Do I Know This Already" Quiz.

      Q&A.

    Chapter 2.

      "Do I Know This Already" Quiz.

      Q&A.

    Chapter 3.

      "Do I Know This Already" Quiz.

      Q&A.

    Chapter 4.

      "Do I Know This Already" Quiz.

      Q&A.

    Chapter 5.

      "Do I Know This Already" Quiz.

      Q&A .

    Chapter 6.

      "Do I Know This Already" Quiz.

       Q&A.

    Chapter 7.

      "Do I Know This Already" Quiz.

      Q&A.

    Chapter 8.

      "Do I Know This Already" Quiz.

      Q&A.

    Chapter 9.

      "Do I Know This Already" Quiz.

      Q&A .

    Chapter 10.

      "Do I Know This Already" Quiz.

       Q&A.

Index.

Downloadable Sample Chapter

Download - 825 KB -- Chapter 3: MQC, QPM, and AutoQoS

Errata

Download the errata