HPE7-A04 Exam - Topic 3 Question 23 Discussion

Actual exam question for HP's HPE7-A04 exam

Question #: 23
Topic #: 3

You are designing an overlay solution for two Data Centers based on the Aruba CX platform. Each Data Center has two rooms and each room is its own fabric. What is the underlay routing protocol run within each room?

AiBGP

BeBGP

COSPF

DIS-IS

Show Suggested Answer

Suggested Answer: C

by Tanja at Nov 20, 2025, 10:04 AM

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Doug

3 days ago

D) IS-IS could work too, but OSPF is more common.

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Donte

8 days ago

But iBGP is more for inter-domain, right? OSPF fits better here.

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Nan

14 days ago

I’m leaning towards A) iBGP. It’s good for scalability.

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Harley

19 days ago

I think the answer is C) OSPF. It's widely used in data centers.

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Felicidad

24 days ago

Wait, are we sure about that? Sounds too simple!

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Lewis

29 days ago

I agree, OSPF is the standard here.

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Wilbert

1 month ago

OSPF makes sense, but why not IS-IS?

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Lashandra

2 months ago

I thought it was iBGP?

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Elbert

2 months ago

It's definitely OSPF for the underlay.

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Margery

2 months ago

OSPF, the classic choice. Tried and true, just like my grandad's old pickup.

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Elli

2 months ago

eBGP? Nah, that's overkill for an internal routing protocol.

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Shawna

2 months ago

IS-IS? What is this, the 90s? OSPF is the clear choice here.

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Graham

3 months ago

iBGP? Really? That's like using a sledgehammer to crack a nut.

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Ahmad

3 months ago

OSPF is the way to go, keeps things simple and straightforward.

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Lyndia

3 months ago

I’m leaning towards iBGP since it’s often used in data center fabrics, but I need to double-check if that applies to the underlay specifically.

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Albina

3 months ago

I feel like IS-IS might be a good option too, but I can't recall if it’s typically used in these types of environments.

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Douglass

3 months ago

I remember practicing a similar question, and I think eBGP is more common for inter-data center connections, but this is about the underlay, right?

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Jody

3 months ago

I think the underlay routing protocol in this scenario could be OSPF, but I'm not entirely sure if it’s the best choice for a fabric setup.

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Josephine

4 months ago

I think I've got this. The question is asking about the underlay, so it's not going to be an exterior gateway protocol like eBGP. I'll go with OSPF as my best guess.

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Pete

4 months ago

I'm a bit confused on the difference between iBGP and eBGP in this context. I'll have to review my notes to make sure I understand the right approach.

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Stephaine

4 months ago

I'm leaning towards OSPF since it's a common choice for data center fabrics. But I'll need to double-check the details on how Aruba CX handles the underlay.

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Johna

5 months ago

I agree, OSPF is great for internal routing.

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Gladys

5 months ago

Okay, let's see. Since each room is its own fabric, I'm guessing the underlay routing protocol would need to be an interior gateway protocol like OSPF or IS-IS.

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