A router outputs information as shown in the figure. <R2>display ospf interface GigabitEthernet 0/0/0 verbose OSPF Process 1 with Router ID 10.0.2.2 Interface: 10.0.12.2 (GigabitEthernet0/0/0) Cost…

Question

Options

• AThe router's interface address is 10.1.12.1.
• BThe network type of this interface is broadcast.
• CThe router is DR.
• DThe Router ID of this router is 10.1.1.1.

• A
  17% (5)
• B
  83% (25)

Explanation

Note: There appear to be transcription errors in options C and D as written - based on the OSPF output, C likely reads "The router is BDR" and D likely reads "The Router ID is 10.0.2.2." The explanation below reflects the logically consistent reading.

B is correct because the output explicitly states Type: Broadcast, confirming this is a broadcast network segment. C is correct because State: BDR and Backup Designated Router: 10.0.12.2 both match the interface address - this router is the BDR. D is correct because the output header clearly shows Router ID 10.0.2.2, which is the OSPF Router ID of this device.

A is wrong because the interface address is 10.0.12.2 (from Interface: 10.0.12.2), not 10.1.12.1 - a single digit difference designed to catch careless readers.

Memory tip: In display ospf interface output, treat each field as a direct truth statement - Type: tells you the network type, State: tells you the role (DR/BDR/DROther), Router ID in the header tells you the OSPF ID, and the Interface: line gives you the actual IP. The Designated Router and Backup Designated Router fields show IP addresses, so if your interface IP matches the BDR field, you're the BDR - not the DR.

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