The Dev-1 and Dev-3 routers are OSPF neighbors overthe Ethernet 0/0 connection. Based
on the show ip ospf neighbor output from the Dev-1 and Dev-3 routers, which statement is
true? Select the best response.
A.
Dev-1 is the DR because it has a higher OSPF routerpriority.
B.
Dev-1 is the DR because it has a lower OSPF router ID.
C.
Dev-3 is the DR because it has a higher OSPF routerpriority.
D.
Dev-3 is the DR because it has a lower OSPF router ID.
E.
Both Dev-1 and Dev-3 are using the default OSPF router priority.
Explanation:
The priority helps determine the DR and BDR on the network to which this interface is
connected. Priority is an 8-bit field based on which DRs and BDRs are elected. The router
with the highest priority becomes the DR. If the priorities are the same, the router with the
highest router ID becomes the DR. By default, priorities are set to 1.
Notice that the Priorities shown in the output above are the priorities of the neighbors so the
priority of router Dev-1 is 2 while the priority ofDev-3 is 1 -> the priority of Dev-1 is higher
than that of Dev-3 -> Dev-1 is the DR.