Networking: IPv4 Subnetting
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Last updated 3:09 PM on 3/6/25
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6 Terms
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Network Address
The network address identifies a specific network. To find it, perform a bitwise AND operation between the IP address and the subnet mask. The result is the network address.
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Number of Hosts
Use the formula: 2^n - 2, where n is the number of bits available for hosts (the bits not used in the subnet mask). Subtract 2 for the network and broadcast addresses.
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Broadcast Address
The broadcast address is used to send data to all devices in the network. To find it, add the number of hosts plus one, plus the last octet of the network address
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Range of Hosts
The range of hosts is between the network address and the broadcast address. The first usable host IP is the network address + 1, and the last usable host IP is the broadcast address - 1.
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Subnets Amount
Two to the power of x equals the number of subnets, in which x is the number of subnet bits. If the IP address has three subnet bits, then you can have two to the 3rd power of subnets, or eight total subnets.
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Ip Addresses for every subnet
Determine the subnet mask.
Calculate the number of addresses.
Identify the network and broadcast addresses.
List all usable addresses in between.
Note 
Flashcards (33)