Which of the following wildcard masks is most useful for matching all IP packets in subnet 10.1.128.0, mask 255.255.255.0?
- 0.0.0.0
- 0.0.0.31
- 0.0.0.240
- 0.0.0.255
- 0.0.15.0
- 0.0.248.255
Explanation: 0.0.0.255 matches all packets that have the same first three octets. This is useful when you want to match a subnet in which the subnet part comprises the first three octets, as in this case.
Please login or Register to submit your answer