A. show ip route
B. show policy - map
C. show access - lists
D. show route - map

A. Areas introduce a boundary on the link - state updates.
B. Areas are  logical definitions specific to any given router.
C. All routers within an area have the exact link - state database.
D. The calculation of the Dijkstra algorithm on a router is limited to changes within an area.
E. The area designated router will always  have a priority of 0.