Question

Identify the network address (I.e. the network portion of the IP address) in each of the following IP addresses

128.140.18.101/24 Blank 1
140.130.15.85 with subnet mask 255:192:0:0 Blank 2
146.255.100.32/11 Blank 3
feffa40b:0:a100:ffea:9543:0:100 Blank 4
fitfefa4 −255.0:0 Blank 5

Answer 1

The network address in an IP address is determined by the subnet mask. The subnet mask represents the number of bits reserved for the network address. The remaining bits are used for host addresses.

Step-by-step explanation:

In each of the given IP addresses, the network portion is determined by the subnet mask. The subnet mask represents the number of bits that are reserved for the network address. The remaining bits are used for host addresses.

1. For the IP address 128.140.18.101/24, the subnet mask is 255.255.255.0. So, the network address is 128.140.18.0.
2. For the IP address 140.130.15.85 with subnet mask 255.192.0.0, the network address is 140.128.0.0.
3. For the IP address 146.255.100.32/11, the subnet mask is 255.224.0.0. Therefore, the network address is 146.224.0.0.
4. For the IP address feffa40b:0:a100:ffea:9543:0:100, the network address cannot be identified without the subnet mask.
5. The IP address fitfefa4 −255.0.0.0 does not follow the correct formatting and cannot be used to identify the network address.