The next network segment is the one to which ServerA is connected. /26 mask converts to 255.255.255.192. 192 deducted from 256 leaves 64. This means the valid subnets are 192.168.2.0, 192.168.2.64, 192.168.2.128, 192.168.2.192. ServerA’s address is a valid address in the 192.168.2.64 subnet but the default gateway and the router’s address is in the 192.168.2.0 subnet. So ServerA’s address is in the wrong subnet and needs to be changed to a valid address in the 192.168.2.0 subnet. This explains why HostA is not able to reach ServerA.