I found this problem in a textbook, and I do not understand the solution:
Find the subnet which the IP:
192.168.1.25 belongs to.
Here is what they did:
192.168.1.25and do a binary
- Then take the subnet mask because of postfix
/27CIDR postfix in the IP.
But why? In the problem definition, the number
/27 was not given. How did they come up with that?