IP Classes, Broadcast, and Multicast (W…
https://www.lifewire.com/internet-protocol-tutorial-address-4057461
IP classes are used to assist in assigning IP addresses to networks with different size requirements. The IPv4 IP address space can be subdivided into five address classes called Class A, B, C, D, and E. Each IP class consists of a contiguous subset of the overall IPv4 address range. Class A: The first 8 bits are for the network ID and the remaining 24 bits are for the host ID. Class A addresses are for very large networks. Class B: The first 16 bits are for the network ID and the remaining 16 bits are for the host ID. Class B addresses are for medium-sized networks. Class C: The first 24 bits are for the network ID and the remaining 8 bits are for the host ID. Class C addresses are for small networks. Class D: The first 4 bits are 1110 and the remaining 28 bits are for multicast group addresses. Class D addresses are for multicast communication. Class E: The first 4 bits are 1111 and the remaining 28 bits are reserved for experimental purposes. Class E addresses are not used in practice.
Class A: The first 8 bits are for the network ID and the remaining 24 bits are for the host ID. Class A addresses are for very large networks.
Class B: The first 16 bits are for the network ID and the remaining 16 bits are for the host ID. Class B addresses are for medium-sized networks.
Class C: The first 24 bits are for the network ID and the remaining 8 bits are for the host ID. Class C addresses are for small networks.
Class D: The first 4 bits are 1110 and the remaining 28 bits are for multicast group addresses. Class D addresses are for multicast communication.
Class E: The first 4 bits are 1111 and the remaining 28 bits are reserved for experimental purposes. Class E addresses are not used in practice.
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