IP address:
subnet part - high order bits
host part - low order bits
host part - low order bits
Device identity in network is IP address like our home address and Identity card Number But in real world IPv4 or IPv6 are not enough to address whole device in network here Subnet Masking help to connect whole device with the network and provide unique ip address in networking
what’s a subnet ?
device interfaces with same subnet part of IP address can physically reach each other without intervening router
to determine the subnets, detach each interface from its host or router, creating islands of isolated networks each isolated network is called a subnet
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