What is the prefix length notation for the subnet mask 255.255.255.224?/26/25/28/27
Question
What is the prefix length notation for the subnet mask 255.255.255.224?
/26
/25
/28
/27
Solution
The prefix length notation for the subnet mask 255.255.255.224 is /27.
Here's how you can determine this:
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Convert each octet of the subnet mask to binary. The binary equivalent of 255 is 11111111, and the binary equivalent of 224 is 11100000. So, the binary form of the subnet mask 255.255.255.224 is 11111111.11111111.11111111.11100000.
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Count the number of consecutive 1s from the left. In this case, there are 27 consecutive 1s before you reach a 0.
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The number of consecutive 1s is the prefix length. So, the prefix length notation for the subnet mask 255.255.255.224 is /27.
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