IP Addressing

This section discusses IP addressing methodology, basic subnetting, variable-length subnet masking (VLSM), and classless interdomain routing (CIDR).

In a properly designed and configured network, communication between hosts and servers is transparent. This is because each device that uses the TCP/IP protocol suite has a unique 32-bit IP address. A device reads the destination IP address in the packet and makes the appropriate routing decision based on this information. In this case, a device might be either the host or server using a default gateway or a router using its routing table to forward the packet to its destination. Regardless of what the device is, the communication is easily accomplished and transparent to the user ...

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