What is an IPv4 address? What are the different classes of IPv4?

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An IP address is a 32-bit dynamic address of a node in the network. An IPv4 address has 4 OCTETS of 8-bit each with each number with a value up to 255.

IPv4 classes are differentiated based on the number of HOSTS it supports on the network. There are five types of IPv4 classes and are based on the FIRST octet of IP addresses which are CLASSIFIED as Class A, B, C, D, or E.

IPv4 Class	IPv4 Start Address	IPv4 End Address	Usage
A	0.0.0.0	127.255.255.255	Used for Large Network
B	128.0.0.0	191.255.255.255	Used for Medium Size Network
C	192.0.0.0	223.255.255.255	Used for Local Area Network
D	224.0.0.0	239.255.255.255	Reserved for Multicasting
E	240.0.0.0	255.255.255.254	Study and R&D

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What is an IPv4 address? What are the different classes of IPv4?

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