Which of the following statements are true?

Route redistribution is only needed if Internet access is a requirement.

Route filtering is the process of attaching data path filters to router interfaces.

Route filtering involves deciding whether to permit or deny certain routing updates from being accepted into, or distributed out of, the route-selection process.

Redistribution is needed for exchanging routes from one routing protocol to another.

OSPF routers that are redistributing routes must be configured as ABRs.