pls help in a routing question

Unanswered Question
May 19th, 2007
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RTA# show ip route ospf

O IA [110/65] via, 00:00:28, Serial2/1/0

O* E2 [110/1] via, 00:00:16, Serial2/1/0

Refer to the exhibit. On the basis of the information presented, which statement is true?

A - A default route is configured on the local router.

B - Network was learned from an OSPF neighbor within the area.

C - OSPF router is an ABR.

D - The default route is learned from an OSPF neighbor.

Answer: B


I didn't got the idea of the answer, so anyone can help?

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Overall Rating: 2.5 (2 ratings)
mohammedmahmoud Sat, 05/19/2007 - 06:52
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Answer B is correct as the "O IA" means Inter Area OSPF route --> route learned within the same area.

HTH, please do rate all helpful replies,

Mohammed Mahmoud.

ankbhasi Sat, 05/19/2007 - 06:59
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Hi Mahmoud,

AFAIK O IA are inter area routes which are originated from other areas and O are intra area routes which are generated from within area.

I believe answer B is correct because is learned from neighbor which is within the area and I believe its learned via 5.x.x.x which may be its neighbor and may be in same area.



*Pls rate all helpfull post

mohammedmahmoud Sat, 05/19/2007 - 07:13
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Hi Ankur,

You are absolutely right "O IA" means Inter Area not Intra Area, i truly apologies for this newbie mistake :), and i think that your explaination is definitely right.


Mohammed Mahmoud.

sharaf_sa Sat, 05/19/2007 - 20:33
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Hi Ankur,

thanks a lot for your answer.any way, it seems that B is the correct answer even though it not clear that 5.x.x.x is within the area.


JanicFerra Thu, 05/15/2014 - 10:41
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Hi Guys.

I have a doubt, why "D" isnt correct?


Thanks in advance


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