Network Layer Troubleshooting

Incorrect Subnet Mask

If a host is configured with the wrong Subnet Mask other devices in it's Network do not recognize it as being a part of the network and it's IP will not be recognized

25 26 27 28 29 30 31 32

128 64 32 16 8 4 2 1

254 1 1 1 1 1 1 1 0

129 1 0 0 0 0 0 0 1

97 0 1 1 0 0 0 0 1

Is there a Subnet Problem Here?