Answer is D.
Module 4 - Nokia IP Networks and Services Fundamentals v4.1
Four intervals of private IP addresses are available:
10.0.0.0/8
169.254.0.0/16 for automatic private IP addressing
172.16.0.0/12
192.168.0.0/16
To determine which of the given IP addresses is a valid host address within the subnet, we need to consider the subnet mask:
172.16.224.255/18
- MASK: 11111111.11111111.11|000000.00000000
- To determine if an IP address is a valid host address, we need to check if the host portion (the last 14 bits) is all zero or all ones.
- HOST: 10101100.0001 0000.11|000000.11111111
- That's a valid host.
255.255.255.255/32
- That's a Broadcast.
224.1.2.1/8
- That range is reserved for multicast address.
192.168.24.59/30
- MASK: 11111111.11111111.11111111.111111|00
- To determine if an IP address is a valid host address, we need to check if the host portion (the last 2 bits) is all zero or all ones.
- HOST: 1100 0000.10101000.00011000.001110|11
- That's a Broadcast.
So, the correct answer is A.
though, 172.30.0.0/16 is not an accurate answer, but still is a valid one because it is derived from the 172.16.0.0/12 private address
upvoted 2 times
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