Which of the following is the wildcard (inverse) version of a /27 mask?

Question

Group of answer choices

0.0.31.255

0.0.0.7

0.0.0.31

0.0.0.27

Answer 1

To determine the wildcard (inverse) version of a /27 subnet mask, we first need to understand what a /27 mask means. A /27 mask corresponds to a subnet mask of 255.255.255.224.

To find the wildcard mask, we subtract the subnet mask from 255.255.255.255:

• Subnet Mask: 255.255.255.224
• Wildcard Mask: 255.255.255.255 - 255.255.255.224

Calculating this:

• 255 - 255 = 0
• 255 - 255 = 0
• 255 - 255 = 0
• 255 - 224 = 31

Thus, the wildcard mask for a /27 prefix is 0.0.0.31.

So, the correct choice from your options is:

0.0.0.31