## What is the prefix length notation for the subnet mask 255.255.255.224?

- /25
- /26
- /27
- /28

**Answers Explanation & Hints:**The binary format for 255.255.255.224 is 11111111.11111111.11111111.11100000. The prefix length is the number of consecutive 1s in the subnet mask. Therefore, the prefix length is /27.