Determine which router will be elected the OSPF designated router in an area 0 network with no point-to-point links, based on the router IDs shown in the topology diagram.
Table of Contents
Question
R1 was started at 4:00 PM. R2 and R3 were started at 6:00 PM. R4 was started at 10:00 PM. All routers are in Area 0 and there are no point-to-point links.
Referring to the exhibit, which router is the designated router?
A. R4
B. R2
C. R1
D. R3
Answer
C. R1
Explanation
In an OSPF network with multiple routers in the same area (Area 0 in this case) and no point-to-point links, the router with the lowest Router ID is elected as the designated router. The exhibit shows the Router IDs as follows:
R1: 192.168.1.1
R2: 192.168.1.2
R3: 192.168.1.3
R4: 192.168.1.4
Since R1 has the lowest Router ID of 192.168.1.1, it will be elected as the designated router for this OSPF area. The order in which the routers were started does not impact the designated router election process when the Router IDs are different. Therefore, the correct answer is C. R1.
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