Exam 200-301 topic 1 question 461 discussion

Actual exam question from Cisco's 200-301

Question #: 461
Topic #: 1

OSPF must be configured between routers R1 and R2. Which OSPF configuration must be applied to router R1 to avoid a DR'BDR election?

A. router ospf 1 network 192.168.1.1 0.0.0.0 area 0 interface e1/1 ip address 192.168.1.1 255.255.255.252 ip ospf cost 0
B. router ospf 1 network 192.168.1.1 0.0.0.0 area 0 hello interval 15 interface e1/1 ip address 192.168.1.1 255.255.255.252
C. router ospf 1 network 192.168.1.1 0.0.0.0 area 0 interface e1/1 ip address 192.168.1.1 255.255.255.252 ip ospf network broadcast
D. router ospf 1 network 192.168.1.1 0.0.0.0 area 0 interface e1/1 ip address 192.168.1.1 255.255.255.252 ip ospf network point-to-point

Show Suggested Answer

Suggested Answer: D 🗳️

by motop9 at Oct. 2, 2022, 7:08 p.m.

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motop9

Highly Voted 2 years, 8 months ago

Point-to-point has no DR/BDR election.

upvoted 27 times

ananinamia

1 year, 9 months ago

thanks

upvoted 1 times

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SVN05

Highly Voted 2 years, 4 months ago

It was close between A & D. A could have been the answer but cost doesn't affect DR/BDR. If it were "ip ospf priority 0" then yes it would not join DR/BDR election.

upvoted 6 times

[Removed]

2 years ago

if ip ospf priority was set to 0 on R1, it would have only prevented from being the DR, but it would be the BDR instead.

upvoted 1 times

[Removed]

2 years ago

sorry, it also prevents the router from being a BDR, you can disregard my previous message

upvoted 2 times

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Nishtha11

Most Recent 5 months ago

Selected Answer: D

Why Option D is Correct OSPF Point-to-Point Network Type: Configuring ip ospf network point-to-point tells OSPF that the link is a point-to-point connection. In point-to-point OSPF network types, routers communicate directly without electing a DR/BDR

upvoted 1 times

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