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1022 host addresses are available on the network 172. 16. 128. 0 with a subnet mask of 255. 255. 252. 0.
A mask of 255.255.252.0 corresponds to a prefix of/22. A /22 prefix allocates 22 bits to the network and leaves 10 bits for the host. The ten bits in the host position will result in 1022 usable IP addresses (210 - 2 = 1022).
What is Subnet Mask?
IPv4 employs an extra component with IP addresses to distinguish network addresses from other host addresses. A subnet mask is the name given to this component. In other words, the subnet mask determines how many bits are used in the network address and, how many bits are left for the host address in an IP address. The subnet mask is also 32 bits long and employs the same notation as the IP address.
Each bit of a IP address is assigned an individual bit by the subnet mask. If an IP bit is assigned to the network portion, the subnet mask would then enable it. If an IP bit is assigned to the host portion, the subnet mask would then disable it.
In binary format, 1 represents an ON bit and 0 reflects an OFF bit. A value from 1 to 255 represents an ON bit in dotted-decimal notation, while 0 (zero) symbolizes an OFF bit.
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