The octet in the subnet mask containing 224 has three consecutive binary 1s in it: 11100000 . Therefore the “network portion” of the whole IP address is: 192.168.32.0 . The “host portion” of the ip address is 0.0.1.22 . Using your notation, the third octet of ip 192.168.33.22 (mask 255.255.224.0) is: 001. Understanding binary notation is important when determining if two hosts are in the same network. Recall that an IPv4 address is a hierarchical address that is made up of a network portion and a host portion. When determining the network portion versus the host portion, it is necessary to look at the 32-bit stream. Within the 32-bit stream, a portion of the bits identify the network, and a portion of the bits identify the host.
Key Concept: In the “classful” IP addressing scheme, a Class A network contains addresses for about 16 million network interfaces; a Class B about 65,000; and a Class C, 254. As you can see, there is quite a disparity in the number of hosts available for each network in each of these classes.
A network host is a computer or other device connected to a computer network. Anetwork host may offer information resources, services, and applications to users or other nodes on the network. A network host is a network node that is assigned a network address. The bits within the network portion of the address must be identical for all devices that reside in the same network. The bits within the host portion of the address must be unique to identify a specific host within a network. If two hosts have the same bit-pattern in the specified network portion of the 32-bit stream, those two hosts will reside in the same network.