Infoblox NIOS-DDI-Expert Exam - Topic 2 Question 17 Discussion

Actual exam question for Infoblox's NIOS-DDI-Expert exam

Question #: 17
Topic #: 2

[All NIOS-DDI-Expert Questions]

If the VRID of a HA pair is configured as 25. Which MAC address is most likely used for the virtual IP address?

A00-00-5E-25-01-00

B00-00-5E-00-01-19

C19-80-C2-00-00-03

D01-00-5E-7F-FF-25

Show Suggested Answer

Suggested Answer: B

Comprehensive and Detailed In-Depth

VRRP defines the virtual MAC for the VIP:

Format: 00:00:5E:00:01:XX, where XX is the VRID (1-255) in hex.

VRID 25: Decimal 25 = Hex 19. Thus, MAC is 00:00:5E:00:01:19.

Options:

A: 25 is decimal, not hex---incorrect conversion. Incorrect.

B: Correctly uses hex 19 for VRID 25. Correct.

C: Random, non-VRRP format. Incorrect.

D: Multicast format, not VRRP. Incorrect.

Practical Example: In an INE lab, you'd configure VRID 25, capture VRRP packets, and verify 00:00:5E:00:01:19, troubleshooting HA.

by Zoila at Jan 05, 2026, 05:16 AM

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Antonio

15 days ago

I'm leaning towards B. It seems like a safe choice.

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Reena

20 days ago

A makes sense. It's the standard for virtual IPs.

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Kristine

25 days ago

I feel like D could be right too. It has the right structure.

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Adelina

1 month ago

I think it's A. The format matches the VRID.

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Danilo

1 month ago

I thought it could be D) at first, but A) makes more sense.

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Louvenia

1 month ago

B) doesn't even match the VRID format, right?

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Kristine

2 months ago

Wait, are we sure about that? Seems too straightforward.

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Roslyn

2 months ago

I agree, that MAC format fits perfectly!

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Minna

2 months ago

It's definitely A) 00-00-5E-25-01-00.

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Dorethea

2 months ago

D) 01-00-5E-7F-FF-25 - wait, is that the MAC address for the Dark Side of the Force?

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Jose

2 months ago

A) 00-00-5E-25-01-00 is the way to go. Anything else would just be guessing.

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Charlette

2 months ago

C) 19-80-C2-00-00-03 is just a random MAC address, it doesn't seem related to the VRID at all.

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Glory

3 months ago

B) 00-00-5E-00-01-19 seems a bit off. The VRID is 25, so the last two octets should reflect that.

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Brittni

3 months ago

D) 01-00-5E-7F-FF-25 looks like a good option. It has the 01-00-5E prefix for multicast MAC addresses.

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Candida

3 months ago

A) 00-00-5E-25-01-00 is the correct answer. This is the standard MAC address format for a VRRP virtual IP address.

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Tamar

4 months ago

I think the answer might be D because it seems to follow the multicast MAC address pattern, but I need to double-check that.

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Alysa

4 months ago

I feel like option A could be correct since it has the right structure for a VRID, but I’m not 100% confident.

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Moira

4 months ago

I remember practicing a similar question where the MAC address was derived from the VRID, but I can't recall the exact format.

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Martha

4 months ago

I think the MAC address for the virtual IP might be related to the VRID, but I'm not completely sure how that works.

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Antonio

4 months ago

A seems like the logical choice given the VRID of 25. I'm pretty confident that's the correct answer.

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Elmira

4 months ago

I'm a bit confused on how the VRID maps to the MAC address. I'll need to think this through carefully.

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Lonna

5 months ago

Okay, I think I've got this. The virtual MAC address is based on the VRID, so A has to be the right answer.

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Cyndy

5 months ago

Hmm, I'm not totally sure about this one. I'll need to review the VRRP MAC address format again.

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Hayley

5 months ago

This one seems pretty straightforward. I'd go with option A since the VRID is 25.

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