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Take an in-depth tour of core Internet protocols and learn how they work together to move data packets from one network to another. With this concise book, you'll delve into the aspects of each protocol, including operation basics and security risks, and learn the function of network hardware such as switches and routers. Ideal for beginning network engineers, each chapter in this book includes a set of review questions, as well as practical, hands-on lab exercises. Understand basic network architecture, and how protocols and functions fit together Learn the structure and operation of the Ethernet protocol Examine TCP/IP, including the protocol fields, operations, and addressing used for networks Explore the address resolution process in a typical IPv4 network Become familiar with switches, access points, routers, and other network components that process packets Discover how the Internet Control Message Protocol (ICMP) provides error messages during network operations Learn about the network mask (subnetting) and how it helps determine the network About the Author Bruce Hartpence is a faculty member in the Network, Security and Systems Administration (NSSA) Department in the Golisano College of Computing and Information Science (GCCIS) at Rochester Institute of Technology (RIT) in Rochester, New York. He splits his time between teaching, projects and writing. Table of Contents Chapter 1 Networking Models What Is a Model? Why Use a Model? OSI Model Introducing TCP/IP Reading Summary Review Questions Review Answers Lab Exercises Chapter 2 Ethernet Remember the Models Structure Ethernet Type II vs. 802.3 MAC Addresses—Another Look Ethernet Operation Shared Media Physical Layer Encoding Other Types of Signaling Topologies Final Thoughts on Ethernet Reading Summary Review Questions Review Answers Lab Exercises Chapter 3 Internet Protocol Protocol Description Structure Addressing Operation Digging a Little Deeper...What Addressing is Sufficient? Security Warning Organizations for Assigning Addresses and Names Standards and RFCs Summary Review Questions Lab Exercises Chapter 4 Address Resolution Protocol The Problem Techniques Protocol Description Structure Addressing in the ARP Request Addressing in the ARP Reply Operation Additional Operations Security Warning IPv6 Digging a Little Deeper Standards and RFCs Summary Review Questions Review Answers Lab Activities Chapter 5 Network Equipment Tables and Hosts Hubs or Repeaters Switches and Bridges Access Points Routers Multilayer Switches and Home Gateways Security Summary Review Questions Review Answers Lab Activities Chapter 6 Internet Control Message Protocol Structure Operations and Types Digging a Little Deeper—the One’s Complement IPv6 Summary Additional Reading Review Questions Review Answers Lab Activities Chapter 7 Subnetting and Other Masking Acrobatics How Do We Use the Mask? What Is a Subnet? Subnet Patterns Subnet IP Addressing A Shorthand Technique The Effect on Address Space Theory vs. Reality Supernetting The Supernetted Network Classless Inter-Domain Routing CIDR and Aggregation Implementation Summary RFCs and Reading Review Questions Review Answers Lab Activities Colophon