Final answer:
To determine valid node IP addresses, we need to check if the IP address falls within the range specified by the default subnet mask.
Step-by-step explanation:
In this question, we need to identify which of the given IP addresses are valid node IP addresses when using the default subnet mask. A default subnet mask for IPv4 addresses consists of 32 bits, with the network portion represented by the first set of bits and the host portion represented by the remaining bits.
An example of a default subnet mask is 255.255.255.0, where the first 24 bits represent the network and the last 8 bits represent the host. In this case, any IP address that falls within the range of the network bits can be a valid node IP address.
Without the given IP addresses, it is not possible to determine which ones are valid. However, if an IP address falls within the range of the network bits specified by the default subnet mask, it can be considered a valid node IP address.