In which state does OSPF determine the master/slave relationship of DD packets?

In OSPF (Open Shortest Path First), routers exchange database information in multiple stages.

ExStart State (Correct Answer):

The Master/Slave relationship is determined in this phase.

The router with the higher Router ID becomes the Master, and the other becomes the Slave.

The Master initiates the exchange of Database Description (DD) packets.

2-way State (Incorrect): This state is reached when two routers recognize each other as neighbors but have not started database exchange.

Exchange State (Incorrect): The actual exchange of DD packets happens in this state, but the Master/Slave roles are already established in ExStart.

Full State (Incorrect): This is the final state where routers have synchronized their link-state databases.

Thus, the correct answer is D (ExStart).