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Cisco Certified Network Associate (CCNA) · Cisco
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if you subnet everything. 192.168.25.128 - original host IP can only fit into the /24 network because the other masks would cause the .128 to be the network ID. the only way to prevent the network id from being .128 is to use the /24 mask
If it helps anybody out you can always use the up range as well like for c 255.255.255.0 that is /24 which has 254 usable ips. Thats should for the range of 192.168.25.100 - 192.168.25.128 provided in the question The range with /24 give us the 192.168.25.0 - 192.168.25.255 which covers those ips in questions just add your usable ips to the last octet to figure out range
One PC is configured with IP address 192.168.25.128/25 - wrong condition, this is network id. incorrect question. Answer is C