350-401 Question 118

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• 1

  I was considering the scenario if the hello timer was left at default for R1. I almost considered answer D: but then I noticed it shows both routers as BDR. Based on the subnet, only these two routers could exist on the segment, so one would have to be a DR, the other a BDR. Answer D says both are BDRs, but one has to be a DR. Even if there were more routers on a segment, you still would only have one BDR so if another router were DR, then either R1 or R2 would be 2WAY/DROTHER, or both. Then I saw answer C. Indeed both would be full, though one would be DR, the other BDR, if it weren't for the hello timer change. But then we don't have enough information to determine the election results. Need priority, router ID, loopback IPs and all other IPs on the routers.

• 3

  I think let's keep it very simple Shits have to match and some shits don't have to, dead and hello timers are the one which have to match

• Chose B1

  Test in GNS3 it was due to different timer set OSPF was form after R2 set the same timer ip ospf hello-interval 2