You have a network with a subnet of 172.16.17.0/22. Which is the valid host address?a)172.16.17.1 255.255.255.252b)172.16.0.1 255.255.240.0c)172.16.20.1 255.255.254.0d)172.16.18.255 255.255.252.0Correct answer is option 'D'. Can you explain this answer?

Question

Answer

Explanation:

Subnetting is the process of dividing a network into smaller sub-networks or subnets. The subnet 172.16.17.0/22 has a network address of 172.16.16.0 and a subnet mask of 255.255.252.0. This means that the subnet has 1024 addresses, ranging from 172.16.16.1 to 172.16.19.254.

Valid host addresses:

A valid host address is an IP address that can be assigned to a host on the network. It is important to note that the first and last addresses in a subnet are reserved for network and broadcast addresses respectively and cannot be assigned to hosts.

Option A: 172.16.17.1 255.255.255.252

This is a valid IP address, but it is not a valid host address for the given subnet. The subnet mask 255.255.255.252 allows for only 2 host addresses, which are 172.16.17.1 and 172.16.17.2. The first and last addresses are reserved for network and broadcast addresses respectively.

Option B: 172.16.0.1 255.255.240.0

This is not a valid IP address for the given subnet. The subnet mask 255.255.240.0 allows for 4094 host addresses, which are not in the range of the given subnet.

Option C: 172.16.20.1 255.255.254.0

This is not a valid IP address for the given subnet. The subnet mask 255.255.254.0 allows for 510 host addresses, which are not in the range of the given subnet.

Option D: 172.16.18.255 255.255.252.0

This is a valid host address for the given subnet. It is in the range of the subnet, and the subnet mask 255.255.252.0 allows for 1022 host addresses. The first and last addresses are reserved for network and broadcast addresses respectively.

Conclusion:

The correct answer is option D, 172.16.18.255 255.255.252.0, as it is a valid host address for the given subnet.

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