If EIGRP and OSPF are configured within an administrative domain for the same network, which value can you change so that the OSPF becomes the installed routing protocol for all routes?
A. Local preference
B. Metric
C. MED
D. Administrative distance
E. Prefix length
agree. D is the answer
D
To change from EIGRP to OSPF, the easiest migration is by modifying AD, not prefixes. Can you imagine if you had 2000 routes (or more, which a lot of companies have) and you decided to remove summarization and start advertising specific – a design and configuration nightmare.