As shown in the figure, R1 and R2 run OSPF, and the two routers can establish an adjacency relationship.

Question

Options

• ATRUE
• BFALSE
• C
• D

• A
  70% (23)
• B
  18% (6)
• C
  9% (3)
• D
  3% (1)

Explanation

Option A is correct because OSPF routers form adjacencies when they share a common network segment and have matching OSPF parameters - including the same Area ID, Hello/Dead intervals, authentication settings, and stub area flags. Since the question states both R1 and R2 run OSPF and are connected (as shown in the figure), the conditions for adjacency are satisfied by definition of the scenario. Option B (FALSE) is incorrect because it would only apply if there were a mismatch in OSPF parameters, mismatched MTU, or no connectivity between the routers - none of which are indicated here. Options C and D are empty distractors with no content, so they can be immediately eliminated.

Memory tip: Think of OSPF adjacency like a handshake agreement - both routers must "agree" on the same Area, timers, and authentication. If the question says they can establish adjacency, take it at face value: the answer is TRUE unless told otherwise.

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