Please help me to answer questions below

A network administrator with an IP address of 192.168.67.0 wishes to apply a subnet mask such that each subnet will have at least 25 hosts

1,What is the category of this network address? How many bits of the address are reserved for the network, and how many for the host?

2, What subnet mask should she use in order to have the most possible subnets? Justify your answer.

3,How many total usable hosts are there with your chosen subnet mask? Justify your answer.

4,Give the CIDR notation for the network.Give the address of each subnet, the corresponding range of usable host addresses, and the broadcast address (give your answers in decimal notation).

5,