What subnet mask would be associated with the IPv4 prefix of /28?
- 255.255.255.252
- 255.255.255.240
- 255.255.255.224
- 255.255.255.0
- 255.255.255.248
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Explanation: /28 represents the number of consecutive 1s in the subnet mask. 24 1s makes the 255.255.255 part of the subnet mask. The last 4 1s in the mask is where it gets a little tricky. Add the values that these 4 1s represent to get the last octet of the mask: 128 + 64 + 32 + 16 = 240. /28 = 255.255.255.240
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