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Introduction to Computer Networks and Cybersecurity by J. David Irwin, Chwan-Hwa Wu

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Chapter 10

The Network Layer

The learning goals for this chapter are as follows:

  • Understand the role of the network layer in the protocol stack and the issues involved in connection-oriented and connectionless service
  • Learn the elements, and their functions, in the Internet Protocol version 4 (IPv4) header
  • Learn the function of the Type of Service field in the IPv4 header
  • Understand the various portions and functions of the IPv4 address
  • Learn the function of the Dynamic Host Configuration Protocol (DHCP) server and its relationship with the IP address, subnet mask, DNS server and default gateway
  • Understand the differences between unicast and multicast routing
  • Explore the details involved in routing between LANs
  • Understand the mapping operation ...

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