Which side of the OSPF router initiates the database description exchange?

A.
the side with the higher IP address

B.
the side with the higher router ID

C.
the side with the higher priority

D.
the side with the higher uptime

Explanation:
In LANs, the election of the designated router takes place when the OSPF network is initially established. When the first OSPF links are active, the routing device with the highest router identifier (defined by the router-id configuration value, which is typically the IP address of the routing device, or the loopback address) is elected the designated router.

The routing device with the second highest router identifier is elected the backup designated router. If the designated router fails or loses connectivity, the backup
designated router assumes its role and a new backup designated router election takes place between all the routers in the OSPF network.