Nokia 4A0-C04 Exam - Topic 4 Question 86 Discussion

Actual exam question for Nokia's 4A0-C04 exam

Question #: 86
Topic #: 4

[All 4A0-C04 Questions]

What is the source IP address in an OSPF update?

A224.0.0.5

B224.0.0.6

CThe unicast IP address of the interface the update is sent on

DThe system address of the router.

Show Suggested Answer

Suggested Answer: C

by Kristeen at Aug 01, 2025, 12:07 AM

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Reena

9 months ago

Wait, is it really the unicast IP? That seems off.

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Edna

9 months ago

I thought it was the unicast IP address of the interface?

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Taryn

9 months ago

Agreed, it's the unicast IP address!

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Thersa

9 months ago

224.0.0.6 is for OSPF DR/BDR, not updates!

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Emmett

9 months ago

It's definitely 224.0.0.5 for OSPF updates.

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Vivan

10 months ago

I’m leaning towards option C, but I could be mixing it up with another protocol. OSPF is tricky!

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Audra

10 months ago

I feel like the answer might be related to the router's system address, but that doesn't sound right for OSPF updates.

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Xenia

10 months ago

I remember practicing a question like this, and I think it was about the multicast addresses. Was it 224.0.0.5 or 224.0.0.6?

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Amie

10 months ago

I think the source IP address in an OSPF update is the unicast IP address of the interface, but I'm not entirely sure.

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Marguerita

11 months ago

I'm not entirely confident on this, but I think the source IP address is the system address of the router sending the update, so I'll go with option D.

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Elden

11 months ago

Ah, I remember this from my CCNA studies! The source IP address for OSPF updates is 224.0.0.5, which is the All OSPF Routers multicast address. Option A is the correct answer.

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Coral

11 months ago

Hmm, I'm a bit confused on this one. I know OSPF uses multicast addresses, but I can't quite remember which one is used for the updates. I'll have to think this through carefully.

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Timothy

11 months ago

I'm pretty sure the source IP address in an OSPF update is the unicast IP address of the interface the update is sent on, so I'll go with option C.

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Christiane

12 months ago

Ah, I remember this from my OSPF studies. The update is sent to the multicast address, but the source IP is the unicast address of the interface. C is the way to go.

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