How to check the following of these? Or how to calculate them?

1. How many bit in an IPv4 address
2. What is your network mask ?
3. How many network bits in your IPv4 address
4. What is your network address
5. How many host address bits in your IPv4 address
6. What is your host address
7. What is your gateway's IP address
8. What is your gateways MAC address
9. What is your MAC address