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CCNA Data Center Official Cert Guide Library combines the two official study guides for the two CCNA Data Center exams. This value-priced bundle includes the following titles: CCNA Data Center DCICN 640-911 Official Cert Guide and CCNA Data Center DCICT Official Cert Guide. These books provide a comprehensive self-study tool for preparing for the exams. Complete coverage of all exam topics as posted on the exam topic blueprint ensures readers will arrive at a thorough understanding of what they need to master to succeed on the exam. The book follows a logical organization of the DCICT exam objectives. Material is presented in a concise manner, focusing on increasing readers´ retention and recall of exam topics. Readers will organize their exam preparation through the use of the consistent features in these chapters, including:

Pre-chapter quiz - These quizzes allow readers to assess their knowledge of the chapter content and decide how much time to spend on any given section.
Foundation Topics - These sections make up the majority of the page count, explaining concepts, configurations, with emphasis on the theory and concepts, and with linking the theory to the meaning of the configuration commands.
Key Topics - Inside the Foundation Topics sections, every figure, table, or list that should absolutely be understood and remembered for the exam is noted with the words "Key Topicö in the margin. This tool allows the reader to quickly review the most important details in each chapter.
Exam Preparation - This ending section of each chapter includes three additional features for review and study, all designed to help the reader remember the details as well as to get more depth. Readers will be instructed to review key topics from the chapter, complete tables and lists from memory, and define key terms.
Final Preparation Chapter-This final chapter details a set of tools and a study plan to help readers complete their preparation for the exams.
CD-ROM Practice Test-The companion CD-ROM contains a set of customizable practice tests.



Introduction xxxi
Getting Started 1
Part I: Networking Fundamentals 9
Chapter 1 The TCP/IP and OSI Networking Models 11
"Do I Know This Already?ö Quiz 11
Foundation Topics 14
Perspectives on Networking 14
TCP/IP Networking Model 15
History Leading to TCP/IP 16
Overview of the TCP/IP Networking Model 17
TCP/IP Application Layer 19
HTTP Overview 19
HTTP Protocol Mechanisms 20
TCP/IP Transport Layer 21
TCP Error Recovery Basics 21
Same-Layer and Adjacent-Layer Interactions 22
TCP/IP Network Layer 22
Internet Protocol and the Postal Service 23
Internet Protocol Addressing Basics 24
IP Routing Basics 25
TCP/IP Link Layer (Data Link Plus Physical) 26
TCP/IP Model and Terminology 28
Comparing the Original and Modern TCP/IP Models 28
Data Encapsulation Terminology 28
Names of TCP/IP Messages 30
OSI Networking Model 30
Comparing OSI and TCP/IP 30
Describing Protocols by Referencing the OSI Layers 31
OSI Layers and Their Functions 32
OSI Layering Concepts and Benefits 33
OSI Encapsulation Terminology 34
Exam Preparation Tasks 36
Review All the Key Topics 36
Definitions of Key Terms 36
Chapter 2 Fundamentals of Ethernet LANs 39
"Do I Know This Already?ö Quiz 39
Foundation Topics 42
An Overview of LANs 42
Typical SOHO LANs 42
Typical Enterprise Campus LANs 43
Typical Data Center Ethernet LAN 44
The Variety of Ethernet Physical Layer Standards 45
Consistent Behavior over All Links Using the Ethernet Data Link Layer 46
Building Physical Ethernet Networks with UTP 47
Transmitting Data Using Twisted Pairs 47
Breaking Down a UTP Ethernet Link 48
UTP Cabling Pinouts for 10BASE-T and 100BASE-T 51
Straight-Through Cable Pinout 51
Crossover Cable Pinout 53
Choosing the Right Cable Pinouts 54
UTP Cabling Pinouts for 1000BASE-T 55
Sending Data in Ethernet Networks 55
Ethernet Data-Link Protocols 55
Ethernet Addressing 56
Identifying Network Layer Protocols with the Ethernet Type Field 58
Error Detection with FCS 59
Sending Ethernet Frames with Switches and Hubs 59
Sending in Modern Ethernet LANs Using Full-Duplex 59
Using Half-Duplex with LAN Hubs 60
Exam Preparation Tasks 63
Review All the Key Topics 63
Complete the Tables and Lists from Memory 63
Definitions of Key Terms 64
Chapter 3 Fundamentals of WANs 67
"Do I Know This Already?ö Quiz 67
Foundation Topics 70
Leased Line WANs 70
Positioning Leased Lines with LANs and Routers 70
Physical Details of Leased Lines 71
Leased Line Cabling 72
Building a WAN Link in a Lab 73
Data Link Details of Leased Lines 74
HDLC Basics 74
How Routers Use a WAN Data Link 75
Ethernet as a WAN Technology 77
Ethernet WANs that Create a Layer 2 Service 78
How Routers Route IP Packets Using Ethernet Emulation 79
Accessing the Internet 80
The Internet as a Large WAN 80
Internet Access (WAN) Links 81
Digital Subscriber Line 82
Cable Internet 84
Exam Preparation Tasks 86
Review All the Key Topics 86
Complete the Tables and Lists from Memory 86
Definitions of Key Terms 86
Chapter 4 Fundamentals of IPv4 Addressing and Routing 89
"Do I Know This Already?ö Quiz 89
Foundation Topics 92
Overview of Network Layer Functions 92
Network Layer Routing (Forwarding) Logic 92
Host Forwarding Logic: Send the Packet to the Default Router 93
R1 and R2's Logic: Routing Data Across the Network 94
R3's Logic: Delivering Data to the End Destination 94
How Network Layer Routing Uses LANs and WANs 94
IP Addressing and How Addressing Helps IP Routing 95
Routing Protocols 97
IPv4 Addressing 97
Rules for IP Addresses 98
Rules for Grouping IP Addresses 98
Class A, B, and C IP Networks 99
The Actual Class A, B, and C IP Networks 101
IP Subnetting 103
IPv4 Routing 105
IPv4 Host Routing 105
Router Forwarding Decisions and the IP Routing Table 106
A Summary of Router Forwarding Logic 106
A Detailed Routing Example 107
IPv4 Routing Protocols 109
Other Network Layer Features 111
Using Names and the Domain Name System 111
The Address Resolution Protocol 112
ICMP Echo and the ping Command 113
Exam Preparation Tasks 115
Review All the Key Topics 115
Complete the Tables and Lists from Memory 115
Definitions of Key Terms 115
Chapter 5 Fundamentals of TCP/IP Transport and Applications 117
"Do I Know This Already?ö Quiz 117
Foundation Topics 120
TCP/IP Layer 4 Protocols: TCP and UDP 120
Transmission Control Protocol 121
Multiplexing Using TCP Port Numbers 122
Popular TCP/IP Applications 125
Connection Establishment and Termination 126
Error Recovery and Reliability 127
Flow Control Using Windowing 130
User Datagram Protocol 131
TCP/IP Applications 132
QoS Needs and the Impact of TCP/IP Applications 132
Defining Interactive and Batch Applications 132
Real-Time Voice and Video Applications 133
The World Wide Web, HTTP, and SSL 134
Uniform Resource Locators 134
Finding the Web Server Using DNS 135
Transferring Files with HTTP 137