Question

What addresses are valid hosts on a network with a /26 subnet mask?

A) 192.168.1.100
B) 10.0.0.200
C) 172.16.0.30
D) 192.168.2.150

Answer 1

To determine the valid host addresses on a network with a /26 subnet mask, you need to understand the subnet mask and check if the given IP addresses fall within the range of valid host addresses. Only the IP address 10.0.0.200 is a valid host address.

Step-by-step explanation:

To determine the valid host addresses on a network with a /26 subnet mask, we need to first understand the subnet mask. A /26 subnet mask means that the first 26 bits of the IP address are fixed, leaving 6 bits for the host portion. In binary, a /26 subnet mask would be 11111111.11111111.11111111.11000000.

Now, using the given IP addresses, we can determine which ones fall within the range of valid host addresses. For example:

• A) 192.168.1.100: This IP address is not a valid host address because it falls outside the range of valid host addresses for a /26 subnet.
• B) 10.0.0.200: This IP address is a valid host address because it falls within the range of valid host addresses for a /26 subnet.
• C) 172.16.0.30: This IP address is not a valid host address because it falls outside the range of valid host addresses for a /26 subnet.
• D) 192.168.2.150: This IP address is not a valid host address because it falls outside the range of valid host addresses for a /26 subnet.

Therefore, the valid hosts on a network with a /26 subnet mask are:

• B) 10.0.0.200