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CCNA Data Center DCICN 640-911 Official Cert Guide by Chad Hintz, Wendell Odom

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Part IV: IP Addressing and Subnetting

Parts II and III of this book focused on Ethernet technologies, with most of that discussion related to Layer 2 (data link) layer processing. Part IV now changes the focus of this book from Layer 2 to Layer 3 (network), setting the foundation to examine IP routing.

Part IV creates a foundation for understanding Layer 3 processing on both routers and Layer 3 switches by explaining both IP Version 4 (IPv4), IP Version 6 (IPv6), and subnetting. To deploy the Layer 3 features in a network, the network engineer must first plan some details of how IP addressing and subnetting work. Once working, all who operate the network must not only understand the generic rules for IP addressing but also the specific choices ...

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