Which statement about BPDU is true?

• A. BPDU is used to assign IP addresses automatically.
• B. BPDU is used to adjust port speed and duplex settings.
• C. BPDU records port configurations.
• D. BPDU determines the topology of the network.

Answer: (D)

BPDU’s role is to carry topology information between switches so the spanning tree can create a loop-free layout. Switches exchange BPDUs to elect the root bridge, compute the path costs to the root, and decide which ports should forward versus block to prevent loops. This process shapes the network's topology, making the statement about determining topology the true one. BPDUs do not assign IP addresses (that's DHCP), they do not adjust port speed or duplex (that’s auto-negotiation), and they don’t record individual port configurations as such.