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

6 months ago

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

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Edna

6 months ago

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

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Taryn

6 months ago

Agreed, it's the unicast IP address!

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Thersa

6 months ago

224.0.0.6 is for OSPF DR/BDR, not updates!

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Emmett

6 months ago

It's definitely 224.0.0.5 for OSPF updates.

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Vivan

7 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

7 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

7 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

7 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

7 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

8 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

8 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

8 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

9 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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