Which of the following statement about OSPF neighbor information is wrong?

Question

Options

• AThe Router ID of the neighbor is 2.2.2.2
• BThis router is the Master
• CThe neighbor's DR is 10.1.1.1
• DThe router ID of this router is 1.1.1.1

• A
  2% (1)
• B
  82% (51)
• C
  5% (3)
• D
  11% (7)

Explanation

Option B is wrong because in OSPF's Database Description (DBD) exchange process, the Master role is assigned to the router with the higher Router ID. Since this router's RID is 1.1.1.1 (as stated in D) and the neighbor's RID is 2.2.2.2 (as stated in A), the neighbor - not this router - would be elected Master.

Options A, C, and D are all valid pieces of information visible in OSPF neighbor output: the neighbor's RID (2.2.2.2), the DR IP address on the segment (10.1.1.1), and this router's own RID (1.1.1.1) are all standard fields shown in commands like display ospf peer or show ip ospf neighbor detail.

Memory tip: Think of Master/Slave election like a hierarchy - the bigger number wins. If your RID is lower than your neighbor's, you are the Slave; the neighbor with the higher RID is always the Master.

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