Cisco - Specific Network Questions

1. What is a wildcard mask, and how is it different from a netmask?
2. How do you configure a Cisco switch or router? What are the steps needed?
3. How would I place an interface into trunking mode?
4. How do you shutdown an interface on a router or switch?
5. What is VTP?
6. What is VMPS?
7. What is SPAN/RSPAN?
8. What is flow/netflow?
9. What is TACACS? Radius?