Review Questions

1:	From what sources can a route be redistributed?
2:	What is the purpose of an administrative distance?
3:	How can administrative distances cause problems when redistributing?
4:	How can redistribution from a classless to a classful routing protocol cause problems?
5:	Which IP IGPs can use the default redistribution metric, and which IGPs must have a metric configured in order for redistribution to work?
6:	What is the difference between using the metric keyword with the redistribute command and using the default-metric command?
7:	What is the purpose of the subnets keyword when redistributing OSPF?
8:	How is the null interface useful when summarizing routes?