VMware 3V0-42.23 Exam - Topic 1 Question 14 Discussion

Actual exam question for VMware's 3V0-42.23 exam

Question #: 14
Topic #: 1

A digital marketing agency is planning to modernize its IT infrastructure to accommodate a growing number of applications and services. The agency's current physical network infrastructure is complex and difficult to manage due to the high number of VLANs. They have chosen VMware NSX as their preferred network virtualization platform, aiming to simplify the network design and increase flexibility. The agency is particularly interested in creating isolated networks for each application and optimizing East-West traffic.

Which of the following would be part of the optimal recommended design?

ADeploy NSX and create VLAN-backed segments for each application, connected via Tier-1 Gateways.

BDeploy NSX and create VLAN-backed segments for each application, connected via NSX Edge nodes.

CDeploy NSX and create Overlay Networks using segments for each application, connected via Tier-1 Gateways.

DDeploy NSX and create Overlay Networks using segments for each application, connected via NSX Edge nodes.

Show Suggested Answer

Suggested Answer: C

1. Why Overlay Networks & Tier-1 Gateways are the Best Choice (Correct Answer - C)

Using NSX Overlay Networks eliminates the complexity of VLAN-based segmentation, providing greater scalability and automation.

Each application gets its own NSX segment, ensuring strong isolation and improved East-West traffic flow.

Tier-1 Gateways handle intra-application traffic efficiently, reducing overhead on Tier-0 Gateways.

2. Why Other Options are Incorrect

(A & B - VLAN-Backed Segments):

VLANs limit scalability and increase network management complexity.

(D - NSX Edge Nodes Instead of Tier-1 Gateways):

NSX Edge nodes are used for North-South traffic. East-West traffic should be handled at the Tier-1 level for efficiency.

3. NSX-T Network Design Best Practices

Use Overlay Networks to eliminate VLAN scaling limitations.

Implement micro-segmentation via NSX Distributed Firewall for application security.

Leverage Tier-1/Tier-0 hierarchy to separate East-West and North-South traffic.

VMware NSX 4.x Reference:

NSX-T Overlay Networking and Transport Zone Design Guide

NSX-T Tier-1 vs. Tier-0 Gateway Best Practices

by Natalie at Nov 21, 2025, 12:43 PM

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Annette

9 hours ago

Definitely prefer NSX Edge nodes for better performance!

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Stevie

6 days ago

I think Overlay Networks are the way to go for flexibility.

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Irma

11 days ago

Option C sounds like the way to go, but I wonder if they've considered the impact on their coffee budget during the implementation phase.

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Jules

16 days ago

Haha, I bet the agency's IT team is already dreaming of a network so simple, it could practically manage itself!

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Kristel

21 days ago

B) Deploy NSX and create VLAN-backed segments for each application, connected via NSX Edge nodes. This could be a good compromise between simplicity and control.

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Leota

26 days ago

D) Deploy NSX and create Overlay Networks using segments for each application, connected via NSX Edge nodes. This would provide better isolation and control over the East-West traffic.

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Roosevelt

1 month ago

C) Deploy NSX and create Overlay Networks using segments for each application, connected via Tier-1 Gateways. This seems like the most optimal design to simplify the network and increase flexibility.

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Virgina

1 month ago

If I recall correctly, Overlay Networks are designed for scalability, so I’m leaning towards options C or D for this question.

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Lindsey

1 month ago

I’m a bit confused about the difference between Tier-1 Gateways and NSX Edge nodes. I hope I can recall the right details during the exam.

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Peter

2 months ago

I think we practiced a similar question where using Overlay Networks was emphasized for better isolation. That might be the right choice here.

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Renay

2 months ago

I remember we discussed the benefits of overlay networks in class, but I'm not sure if they always require Tier-1 Gateways.

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Glory

2 months ago

This is a great question that really tests our understanding of NSX. I think option C is the way to go - the overlay networks will give us the isolation we need, and the Tier-1 Gateways should provide the flexibility and optimization we're looking for. Feels like the most comprehensive solution.

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Sheron

2 months ago

I'm a little confused by the differences between the VLAN-backed segments and the overlay networks. Can someone help me understand the tradeoffs there? I want to make sure I pick the right option.

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Amos

2 months ago

Okay, I think I've got it. The key is that we want to simplify the network design and increase flexibility, so the overlay networks in options C and D are the way to go. And since we're looking to optimize East-West traffic, the Tier-1 Gateways in option C seem like the better choice.

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Omer

3 months ago

Wait, are VLAN-backed segments really the best choice anymore?

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Celia

3 months ago

Hmm, I'm a bit unsure about this one. The question mentions optimizing East-West traffic, so I'm wondering if the NSX Edge nodes in option D might be a better choice for that. I'll have to think it through a bit more.

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Tori

3 months ago

This seems like a pretty straightforward NSX design question. I think option C is the way to go - using overlay networks and Tier-1 Gateways should give us the isolation and flexibility we need.

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Stefania

2 months ago

I agree, option C looks solid for isolation.

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Lili

3 months ago

Overlay networks are definitely the way to go!

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