Introduction
About the Exam
Congratulations! If you are reading far enough to look at this book’s Introduction, you’ve probably already decided to go for your Cisco CCNA Data Center certification, and that begins with the Introducing Cisco Data Center Networking (DCICN 200-150) exam. Cisco dominates the networking marketplace, and in a few short years after entering the data center server marketplace, they have achieved significant market share and become one of the primary vendors of data center server hardware as well. If you want to succeed as a technical person in the networking industry, and in data centers in particular, you need to know Cisco. Getting your CCNA Data Center certification is a great first step toward building your skills and becoming respected by others in the data center field.
CCNA Data Center and the Other CCNA Certifications
Cisco offers a wide variety of Cisco Certified Network Associate certifications. Cisco first offered CCNA back in 1998, using the name CCNA, with the certification focusing on routing and switching. Since that time, Cisco has added the CCNA certifications for various technology areas, as listed in Figure I-2. Cisco even renamed the original CCNA to CCNA Routing & Switching, so each and every CCNA certification’s topic area is part of the name.
* The CCNA R&S has two different exam paths. One begins with CCENT, whereas the other allows you to get CCNA R&S certified using one exam: the CCNA 200-125 exam. With the single-exam path, CCENT is technically not a prerequisite; however, the single exam includes coverage of the topics in CCENT, so you still need to know CCENT content to achieve CCNA R&S.
Interestingly, Cisco uses the Cisco Certified Entry Networking Technician (CCENT) certification as the minimum prerequisite for some of the CCNA certifications, but not all. As you can see in Figure I-2, CCNA Data Center, and five others, do not require you to first achieve CCENT (or some other more advanced routing and switching certification). Why? All six of these CCNA certifications that have no prerequisites cover the required routing and switching topics within the certification already. For instance, almost all the concepts discussed in this book are included in the scope of the ICND1 100-101 exam.
Note
Always check www.cisco.com/go/certifications for current prerequisites. Cisco sometimes changes the prerequisites with the introduction of a new version of an exam or certification.
The Exams That Help You Achieve CCNA Data Center Certification
The Cisco CCNA Data Center certification is the most basic Cisco Data Center certification, and it acts as a prerequisite for the other Cisco Data Center certifications. CCNA Data Center itself has no other prerequisites. To achieve the CCNA Data Center cert, you simply have to pass two exams: Introducing Cisco Data Center Networking (DCICN) and Introducing Cisco Data Center Technologies (DCICT), as shown in Figure I-1.
The DCICN and DCICT differ quite a bit in terms of the topics covered. DCICN focuses on networking technology. In fact, it overlaps quite a bit with the topics in the ICND1 100-101 exam, which leads to the Cisco Certified Entry Network Technician (CCENT) certification. DCICN explains the basics of networking, focusing on Ethernet switching and IP routing. The only data center focus in DCICN happens to be the fact that all the configuration and verification examples use Cisco Nexus switches, which Cisco builds specifically for use in the data center.
The DCICT exam instead focuses on technologies specific to the data center. These technologies include storage networking, Unified Computing (the term used by Cisco for its server products and services), and data networking features unique to the Nexus model series of switches.
Basically, DCICN touches on concepts that you might see in all parts of a corporate network (including the data center), and DCICT then hits the topics specific to data centers.
Types of Questions on the Exams
Cisco certification exams follow the same general format. At the testing center, you sit in a quiet room with a PC. Before the exam timer begins, you have a chance to do a few other tasks on the PC. For instance, you can take a sample quiz just to get accustomed to the PC and the testing engine. Anyone who has user-level skills in getting around a PC should have no problems with the testing environment.
Once the exam starts, the screen shows you question after question. The questions typically fall into one of the following categories:
Multiple choice, single answer
Multiple choice, multiple answer
Testlet
Drag and drop (DND)
Simulated lab (sim)
Simlet
The first three items in the list are all actually multiple-choice questions. The multiple-choice format simply requires that you point and click a circle beside the correct answer(s). Cisco traditionally tells you how many answers you need to choose, and the testing software prevents you from choosing too many answers. The testlet asks you several multiple-choice questions, all based on the same larger scenario.
DND questions require you to move some items around on the graphical user interface (GUI). You left-click and hold, move a button or icon to another area, and release the clicker to place the object somewhere else (usually into a list). Or, you might see a diagram, and you have to click and drag the icons in the figure to the correct place to answer a question. For some questions, to get the question correct, you might need to put a list of five things in the proper order.
The last two types, sim and simlet questions, both use a network simulator. Interestingly, the two types actually allow Cisco to assess two very different skills. First, sim questions generally describe a problem, and your task is to configure one or more routers and switches to fix the problem. The exam then grades the question based on the configuration you changed or added. Basically, these questions begin with a broken configuration, and you have to fix the configuration to answer the question.
Simlet questions also use a network simulator, but instead of you answering the question by changing the configuration, the simlet includes one or more multiple-choice questions that require you to use the simulator to examine the current behavior of a network and interpret the output of any show commands that you can remember to answer the question. Whereas sim questions require you to troubleshoot problems related to a configuration, simlets require you to analyze both working and broken networks as well as correlate show command output with your knowledge of networking theory and configuration commands.
You can watch and even experiment with these command types using the Cisco Certification Exam Tutorial. To find the Cisco Certification Exam Tutorial, go to www.cisco.com, and search for “exam tutorial.”
What’s on the DCICN Exam?
Everyone wants to know what is on the test, for any test, ever since the early days of school. Cisco tells the world the topics on each of its exams. For every Cisco certification exam, Cisco wants the public to know the variety of topics as well as to have an idea about the kinds of knowledge and skills required for each topic. To that end, Cisco publishes a set of exam topics for each exam.
While each exam topics lists the specific topics, such as IP addressing, OSPF, and VLANs, the verb in the exam topic is just as important. The verb tells us to what degree the topic must be understood and what skills are required. The topic also implies the kinds of skills required for that topic. For example, one topic might start with “Describe...,” another with “Configure...,” another with “Verify...,” and another might begin with “Troubleshoot....” That last topic has the highest required skill level, because to troubleshoot, you must understand the topic, be able to configure it (to see what is wrong with the configuration), and verify it (to find the root cause of the problem). By listing the topics and skill levels, Cisco helps us all prepare for its exams.
Cisco’s posted exam topics, however, are only guidelines. Cisco’s disclaimer language mentions that fact. Cisco makes the effort to keep the exam questions within the confines of the stated exam topics, and I know from talking to those involved that every question is analyzed for whether it fits within the stated exam topics.
DCICN 200-150 Exam Topics
You can easily find exam topics for both the DCICN and DCICT exams with a simple search at Cisco.com. Alternatively, you can go to www.cisco.com/go/ccna, which gets you to the page for CCNA Routing and Switching, and then easily navigate to the nearby CCNA Data Center page.
Over time, Cisco has begun making two stylistic improvements to the posted exam topics. In the past, the topics were simply bulleted lists, with some indentation to imply subtopics under a major topic. More and more often today, including for the DCICN and DCICT exam topics, Cisco also numbers the exam topics, making it easier to refer to specific topics. In addition, Cisco lists the weighting for each of the major topic headings. The weighting tells you the percentage of points from your exam that should come from each major topic area. The DCICN contains five major headings, with the weightings shown in Table I-1.
Note that while the weighting of each topic area tells you something about the exam, in the authors’ opinion, the weighting probably does not change how you study. All five topic areas hold enough weighting so that if you completely ignore one topic, you will likely not pass. Also, networking requires that you put many concepts together, so you need all the pieces before you can understand the whole network. The weightings might tell you where to spend a little more of your time during the last days before taking the exam, but otherwise, plan on studying for all the exam topics.
Tables I-2 through I-6 list the details of the exam topics, with one table for each of the major topic areas listed in Table I-1. Note that these tables also list the book chapters that discuss each of the exam topics.
Because it is possible that the exam topics may change over time, it may be worth double-checking the exam topics as listed on the Cisco website (go to www.cisco.com/go/certifications and navigate to the CCNA Data Center page). In the unlikely event that Cisco does happen to add exam topics at a later date, note that Appendix B, “DCICN Exam Updates,” describes how to go to www.ciscopress.com and download additional information about those newly added topics.
About the Book
This book discusses the content and skills needed to pass the 200-150 DCICN exam.
Book Features and Exam Preparation Methods
This book uses several key methodologies to help you discover the exam topics for which you need more review, to help you fully understand and remember those details, and to help you prove to yourself that you have retained your knowledge of those topics. Therefore, this book does not try to help you pass the exams only by memorization, but by truly learning and understanding the topics.
The book includes many features that provide different ways to study so you can be ready for the exam. If you understand a topic when you read it, but do not study it any further, you probably will not be ready to pass the exam with confidence. The features included in this book give you tools that help you determine what you know, review what you know, better learn what you don’t know, and be well prepared for the exam. These tools include the following:
“Do I Know This Already?” Quizzes: Each chapter begins with a quiz that helps you determine the amount of time you need to spend studying that chapter.
Foundation Topics: These are the core sections of each chapter. They explain the protocols, concepts, and configurations for the topics in that chapter.
Exam Preparation Tasks: The “Exam Preparation Tasks” section lists a series of study activities that should be done after reading the “Foundation Topics” section. Each chapter includes the activities that make the most sense for studying the topics in that chapter. The activities include the following:
Key Topics Review: The Key Topic icon appears next to the most important items in the “Foundation Topics” section of the chapter. The “Key Topics Review” activity lists the key topics from the chapter and their page numbers. Although the contents of the entire chapter could be on the exam, you should definitely know the information listed in each key topic. Review these topics carefully.
Definition of Key Terms: Although certification exams might be unlikely to ask a question such as “Define this term...,” the DCICN 200-150 and DCICT 200-155 exams require you to learn and know a lot of terminology. This section lists some of the most important terms from the chapter, asking you to write a short definition and compare your answer to the Glossary.
End of Chapter Review Questions: Confirm that you understand the content you just covered.
Book Organization, Chapters, and Appendixes
This book contains 23 core chapters (Chapters 1 through 23), with Chapter 24 including some suggestions for how to approach the actual exams. Each core chapter covers a subset of the topics on the DCICN exam. The core chapters are organized into sections. The core chapters cover the following topics.
Part I: Networking Fundamentals
Chapter 1, “Introduction to Nexus Data Center Infrastructure and Architecture:” Introduces the Cisco Nexus product lines and their capabilities and also discusses the evolution of data center network design.
Chapter 2, “The TCP/IP and OSI Networking Models:” Introduces the terminology surrounding two different networking architectures, namely Transmission Control Protocol/Internet Protocol (TCP/IP) and Open Systems Interconnection (OSI).
Chapter 3, “Fundamentals of Ethernet LANs:” Covers the concepts and terms used for the most popular option for the data link layer for local area networks (LANs), namely Ethernet.
Chapter 4, “Fundamentals of IPv4 Addressing and Routing:” IP is the main network layer protocol for TCP/IP. This chapter introduces the basics of IP Version 4 (IPv4), including IPv4 addressing and routing.
Part II: Data Center Nexus Switching & Routing Fundamentals
Chapter 5, “Installing and Operating Nexus Switches:” Explains how to access, examine, and configure Cisco Nexus switches.
Chapter 6, “VLAN and Trunking Concepts:” Explains the concepts surrounding virtual LANs, including VLAN trunking and the VLAN Trunking Protocol (VTP).
Chapter 7, “VLAN Trunking and Configuration:” Explains the configuration surrounding VLANs, including VLAN trunking and VTP.
Chapter 8, “Spanning Tree Protocol Concepts:” Discusses the concepts behind the IEEE Spanning Tree Protocol (STP) and how it makes some switch interfaces block frames to prevent frames from looping continuously around a redundant switched LAN.
Chapter 9, “Cisco Nexus Spanning Tree Protocol Implementation:” Shows how to configure, verify, and troubleshoot STP implementation on Cisco switches.
Chapter 10, “Configuring Ethernet Switching:” Shows how to configure a variety of Nexus switch features, including duplex and speed, port security, securing the command-line interface (CLI), and the switch IP address.
Part III: IPv4/IPv6 Subnetting
Chapter 11, “Perspectives on IPv4 Subnetting:” Walks through the entire concept of subnetting, from starting with a Class A, B, or C network to analyzing requirements, making choices, calculating the resulting subnets, and assigning those on paper—all in preparation to deploy and use those subnets by configuring the devices.
Chapter 12, “Analyzing Classful IPv4 Networks:” IPv4 addresses originally fell into several classes, with unicast IP addresses being in Class A, B, and C. This chapter explores all things related to address classes and the IP network concept created by those classes.
Chapter 13, “Analyzing Subnet Masks:” In most jobs, someone else came before you and chose the subnet mask used in a network. What does that mean? What does that mask do for you? This chapter focuses on how to look at the mask (and IP network) to discover key facts, such as the size of a subnet (number of hosts) and the number of subnets in the network.
Chapter 14, “Analyzing Existing Subnets:” Most troubleshooting of IP connectivity problems starts with an IP address and mask. This chapter takes that paired information and shows you how to find and analyze the subnet in which that IP address resides, including finding the subnet ID, range of addresses in the subnet, and subnet broadcast address.
Chapter 15, “Fundamentals of IP Version 6:” Surveys the big concepts, addressing, and routing created by the new version of IP: IP Version 6 (IPv6). This chapter attempts to show the similarities with IPv4, as well as the key differences—in particular the differences in IPv6 addresses.
Part IV: IPv4 Routing
Chapter 16, “IPv4 Routing Concepts:” Looks at the IPv4 packet-forwarding process. It shows how a pure router forwards packets. This chapter also breaks down the multilayer switches (which include Cisco Nexus switches), including the Layer 3 routing logic in the same device that does Layer 2 Ethernet switching.
Chapter 17, “Cisco Nexus IPv4 Routing Configuration:” Discusses how to implement IPv4 on Nexus switches. This chapter includes the details of configuring IPv4 addresses, static IPv4 routes, and multilayer switching.
Chapter 18, “IPv4 Routing Protocol Concepts:” Examines a variety of protocols available to routers and multilayer switches to dynamically learn routes for the IP subnets in an internetwork. This chapter focuses on the routing protocol theory that applies to any routing device, with discussion of RIP, OSPF, and EIGRP.
Chapter 19, “Nexus Routing Protocol Configuration:” Explains how to implement IPv4 routing protocols on Cisco Nexus switches, specifically for RIP, OSPF, and EIGRP.
Chapter 20, “Nexus First-Hop Redundancy Protocols and Configurations:” Discusses the different types of FHRPs and how to configure them using Cisco Nexus product lines.
Chapter 21, “IPv4 Access Control Lists on Cisco Nexus Switches:” Discusses the basic concept of how an access control list (ACL) can filter packets as well as the implementation of IPv4 ACLs with Nexus switches.
Part V: Data Center Storage Technologies
Chapter 22, “Introduction to Storage and Storage Networking:” Provides an overview of the data center storage-networking technologies. It compares Small Computer System Interface (SCSI), Fibre Channel, network-attached storage (NAS) connectivity for remote server storage, and storage-area network (SAN). It covers Fibre Channel, Internet Small Computer System Interface (iSCSI), and Fibre Channel over Ethernet protocols and operations in detail. The edge/core layer of the SAN design is also included.
Chapter 23, “Advanced Storage Area Network (SAN) Technologies and Configurations:” Provides an overview of how to configure Cisco MDS 9000 Series multilayer switches. It also describes how to verify virtual storage-area networks (VSANs), zoning, the fabric login, fabric domain, VSAN trunking, and setting up an ISL port using the command-line interface. It discusses node port virtualization and storage virtualization concepts. It introduces principles behind IEEE data center bridging standards and various options for multihop FCoE topologies to extend the reach of Unified Fabric beyond the single-hop boundary.
Part VI: Final Preparation
Chapter 24, “Final Review:” Suggests a plan for final preparation once you have finished the core parts of the book, in particular explaining the many study options available in the book.
Part VII: Appendices (In Print)
Appendix A, “Answers to the ‘Do I Know This Already?’ Quizzes:” Includes the answers to all the questions from Chapters 1 through 23.
Appendix B, “DCICN Exam Updates:” Covers a variety of short topics that either clarify or expand upon topics covered earlier in the book. This appendix is updated from time to time and posted at www.ciscopress.com/title/9781587205965, with the most recent version available at the time of printing included here as Appendix B. (The first page of the appendix includes instructions on how to check to see whether a later version of Appendix B is available online.)
Glossary: Contains definitions for all of the terms listed in the “Definitions of Key Terms” section at the conclusion of Chapters 1 through 23.
Part VII: Appendices (Online)
Appendix C, “Memory Tables:” Holds the key tables and lists from each chapter, with some of the content removed. You can print this appendix and, as a memory exercise, complete the tables and lists. The goal is to help you memorize facts that can be useful on the exams.
Appendix D, “Memory Tables Answer Key:” Contains the answer key for the exercises in Appendix I.
Appendix E, “Practice for Chapter 12: Analyzing Classful IPv4 Networks:” Lists practice problems associated with Chapter 12. In particular, the practice questions ask you to find the classful network number in which an address resides, and all other facts about that network.
Appendix F, “Practice for Chapter 13: Analyzing Subnet Masks:” Lists practice problems associated with Chapter 13. In particular, the practice questions ask you to convert masks between the three formats, and to examine an existing mask, determine the structure of the IP addresses, and calculate the number of hosts per subnet and the number of subnets.
Appendix G, “Practice for Chapter 14: Analyzing Existing Subnets:” Lists practice problems associated with Chapter 14. In particular, the practice questions ask you to take an IP address and mask and find the subnet ID, subnet broadcast address, and range of IP addresses in the subnet.
Appendix H, “Practice for Chapter 21: IPv4 Access Control Lists on Cisco Nexus Switches:” Lists practice problems associated with Chapter 21. In particular, the practice questions give you a chance to practice working with access control list (ACL) wildcard masks.
Appendix I, “Numeric Reference Tables:” Lists several tables of numeric information, including a binary-to-decimal conversion table and a list of powers of 2.
Appendix J, “Nexus Lab Guide:” Gives some advice on options for building hands-on skills with NX-OS, the operating system on Cisco Nexus switches.
Appendix K, “Study Planner:” A spreadsheet with major study milestones, where you can track your progress.
Companion Website
Register this book to get access to the Pearson IT Certification test engine and other study materials, plus additional bonus content. Check this site regularly for new and updated postings written by the authors that provide further insight into the more troublesome topics on the exam. Be sure to check the box that you would like to hear from us to receive updates and exclusive discounts on future editions of this product or related products.
To access this companion website, follow these steps:
1. Go to www.pearsonITcertification.com/register and log in or create a new account.
2. Enter the ISBN: 9781587205965
3. Answer the challenge question as proof of purchase.
4. Click the “Access Bonus Content” link in the Registered Products section of your account page to be taken to the page where your downloadable content is available.
Please note that many of our companion content files can be very large, especially image and video files. If you are unable to locate the files for this title by following these steps, please visit www.pearsonITcertification.com/contact and select the “Site Problems/Comments” option. Our customer service representatives will assist you.
Pearson IT Certification Practice Test Engine and Questions
The companion website includes the Pearson IT Certification Practice Test engine—software that displays and grades a set of exam-realistic multiple-choice questions. Using the Pearson IT Certification Practice Test engine, you can either study by going through the questions in Study Mode or take a simulated exam that mimics real exam conditions. You can also serve up questions in a Flash Card Mode, which will display just the question and no answers, challenging you to state the answer in your own words before checking the actual answers to verify your work.
The installation process requires two major steps: installing the software and then activating the exam. The website has a recent copy of the Pearson IT Certification Practice Test engine. The practice exam (the database of exam questions) is not on this site.
Note
The cardboard sleeve in the back of this book includes a piece of paper. The paper lists the activation code for the practice exam associated with this book. Do not lose the activation code. On the opposite side of the paper from the activation code is a unique, one-time-use coupon code for the purchase of the Premium Edition eBook and Practice Test.
Install the Software
The Pearson IT Certification Practice Test is a Windows-only desktop application. You can run it on a Mac using a Windows virtual machine, but it was built specifically for the PC platform. The minimum system requirements are as follows:
Windows 10, Windows 8.1, or Windows 7
Microsoft .NET Framework 4.0 Client
Pentium-class 1GHz processor (or equivalent)
512MB RAM
650MB disk space plus 50MB for each downloaded practice exam
Access to the Internet to register and download exam databases
The software installation process is routine as compared with other software installation processes. If you have already installed the Pearson IT Certification Practice Test software from another Pearson product, there is no need for you to reinstall the software. Simply launch the software on your desktop and proceed to activate the practice exam from this book by using the activation code included in the access code card sleeve in the back of the book.
The following steps outline the installation process:
1. Download the exam practice test engine from the companion site.
2. Respond to Windows prompts, as with any typical software installation process.
The installation process will give you the option to activate your exam with the activation code supplied on the paper in the cardboard sleeve. This process requires that you establish a Pearson website login. You need this login to activate the exam, so please do register when prompted. If you already have a Pearson website login, there is no need to register again. Just use your existing login.
Activate and Download the Practice Exam
Once the exam engine is installed, you should then activate the exam associated with this book (if you did not do so during the installation process), as follows:
1. Start the Pearson IT Certification Practice Test software from the Windows Start menu or from your desktop shortcut icon.
2. To activate and download the exam associated with this book, from the My Products or Tools tab, click the Activate Exam button.
3. At the next screen, enter the activation key from the paper inside the cardboard sleeve in the back of the book. Once this is entered, click the Activate button.
4. The activation process will download the practice exam. Click Next and then click Finish.
When the activation process completes, the My Products tab should list your new exam. If you do not see the exam, make sure that you have selected the My Products tab on the menu. At this point, the software and practice exam are ready to use. Simply select the exam and click the Open Exam button.
To update a particular exam you have already activated and downloaded, display the Tools tab and click the Update Products button. Updating your exams will ensure that you have the latest changes and updates to the exam data.
If you want to check for updates to the Pearson Cert Practice Test exam engine software, display the Tools tab and click the Update Application button. You can then ensure that you are running the latest version of the software engine.
Activating Other Exams
The exam software installation process, and the registration process, only has to happen once. Then, for each new exam, only a few steps are required. For instance, if you buy another Pearson IT Certification Cert Guide, extract the activation code from the cardboard sleeve in the back of that book; you do not even need the exam engine at this point. From there, all you have to do is start the exam engine (if not still up and running) and perform steps 2 through 4 from the previous list.
Assessing Exam Readiness
Exam candidates never really know whether they are adequately prepared for the exam until they have completed about 30 percent of the questions. At that point, if you are not prepared, it is too late. The best way to determine your readiness is to work through the “Do I Know This Already?” quizzes at the beginning of each chapter and review the Foundation Topics and Key Topics presented in each chapter. It is best to work your way through the entire book, unless you can complete each subject without having to do any research or look up any answers.
How to View Only DIKTA Questions by Part
Each “Part Review” section asks you to repeat the Do I Know This Already (DIKTA) quiz questions from the chapters in that part. Although you could simply scan the book pages to review these questions, it is slightly better to review these questions from inside the PCPT software, just to get a little more practice in how to read questions from the testing software. But you can just read them in the book as well.
To view these DIKTA (book) questions inside the PCPT software, follow these steps:
Step 1. Start the PCPT software.
Step 2. From the main (home) menu, select the item for this product, with a name like DCICN 200-150 Official Cert Guide, and click Open Exam.
Step 3. The top of the next window that appears should list some exams; select the box beside DCICN Book Questions and deselect the other boxes. This selects the “book” questions (that is, the DIKTA questions from the beginning of each chapter).
Step 4. In this same window, click at the bottom of the screen to deselect all objectives (chapters). Then select the box beside each chapter in the part of the book you are reviewing.
Step 5. Select any other options on the right side of the window.
Step 6. Click Start to start reviewing the questions.
How to View Only Part Review Questions by Part
The exam databases you get with this book include a database of questions created solely for study during the part review process. DIKTA questions focus more on facts, with basic application. The part review questions instead focus more on application, and they look more like real exam questions.
To view these questions, follow the same process as you did with DIKTA/book questions, but select the part review database instead of the book database, as follows:
Step 1. Start the PCPT software.
Step 2. From the main (home) menu, select the item for this product, with a name like DCICN 200-150 Official Cert Guide, and click Open Exam.
Step 3. The top of the next window should list some exams; select the box beside Part Review Questions and deselect the other boxes. This selects the questions intended for part-ending review.
Step 4. On this same window, click at the bottom of the screen to deselect all objectives, and then select (check) the box beside the book part you want to review. This tells the PCPT software to give you part review questions from the selected part.
Step 5. Select any other options on the right side of the window.
Step 6. Click Start to start reviewing the questions.
Premium Edition eBook and Practice Tests
This book also includes an exclusive offer for 70% off the Premium Edition eBook and Practice Tests edition of this title. Please see the coupon code included with the cardboard sleeve for information on how to purchase the Premium Edition.
For More Information
If you have any comments about the book, submit them via www.ciscopress.com. Just go to the website, select Contact Us, and type your message.
Cisco might make changes that affect the CCNA Data Center certification from time to time. You should always check www.cisco.com/go/certification for the latest details.
The CCNA Data Center DCICN 200-150 Official Cert Guide helps you attain the CCNA Data Center certification. This is the DCICN exam prep book from the only Cisco-authorized publisher. We at Cisco Press believe that this book certainly can help you achieve CCNA Data Center certification, but the real work is up to you! We trust that your time will be well spent.