The Sky Networks - CIDR CIDR (Classless Inter-Domain Routing) notation rather than the common subnet mask 255.x.x.x when configuring addresses and networks. Refer to the CIDR Subnet Table to find the CIDR
Consider that the IP address is 192.248.87.3 and the sub-net mask is 255.255.255.224. How many hosts can be directly connected to this network? - Quora
![If we don't subnet and use as our subnet mask then we use all of our IP addresses on one network. This is not an efficient use of our Class. - ppt If we don't subnet and use as our subnet mask then we use all of our IP addresses on one network. This is not an efficient use of our Class. - ppt](https://slideplayer.com/10864949/39/images/slide_1.jpg)