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Why do we need a subnet mask?- A subnet mask allows identification of host part and network part of an IP address.
- Subnet mask can be used to find if an IP address is present on a subnet or not.
- Subnet mask is utilized for isolating the network id and host ids.
- This is to reduce the broadcast domain or to reduce heavy network traffic.
- A subnet mask helps in separating an IP address into network and host address.
- It is a 32-bit number which masks an IP address and divides it into network and host address.
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