Discuss Amazon ANS-C01 Exam Topic 5 Question 21

A company is deploying third-party firewall appliances for traffic inspection and NAT capabilities in its VPC. The VPC is configured with private subnets and public subnets. The company needs to deploy the firewall appliances behind a load balancer.

Which architecture will meet these requirements MOST cost-effectively?

ADeploy a Gateway Load Balancer with the firewall appliances as targets. Configure the firewall appliances with a single network interface in a private subnet. Use a NAT gateway to send the traffic to the internet after inspection.

BDeploy a Gateway Load Balancer with the firewall appliances as targets. Configure the firewall appliances with two network interfaces: one network interface in a private subnet and another network interface in a public subnet. Use the NAT functionality on the firewall appliances to send the traffic to the internet after inspection.

CDeploy a Network Load Balancer with the firewall appliances as targets. Configure the firewall appliances with a single network interface in a private subnet. Use a NAT gateway to send the traffic to the internet after inspection.

DDeploy a Network Load Balancer with the firewall appliances as targets. Configure the firewall appliances with two network interfaces: one network interface in a private subnet and another network interface in a public subnet. Use the NAT functionality on the firewall appliances to send the traffic to the internet after inspection.

Suggested Answer: B

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38 comments · newest first

Leigha 11 months ago

Two interfaces in B sound risky. Why complicate things?

Rikki 11 months ago

Wow, I didn't expect A to be the best choice!

Cordelia 11 months ago

Not so sure about A, B might be better for redundancy.

Glory 11 months ago

I agree, A is the way to go!

Galen 12 months ago

Option A seems the most cost-effective.

Dierdre 12 months ago

I think option D could be a good choice because having two interfaces might help with traffic management, but I’m not confident if it’s the most cost-effective solution.

Hubert 1 year ago

I’m leaning towards option C since it mentions a Network Load Balancer, but I’m a bit confused about whether that’s the best choice for firewall appliances.

Jutta 1 year ago

I remember practicing a similar question where we had to choose between using a NAT gateway or relying on the firewall's NAT. I feel like option B might be more flexible with the two interfaces.

Raina 1 year ago

I think option A makes sense because it uses a Gateway Load Balancer, which is designed for this kind of setup, right? But I'm not entirely sure about the single network interface part.

Micaela 1 year ago

I'm not entirely sure about the performance implications of using a single network interface versus two network interfaces on the firewall appliances. I'll need to think through the network traffic flow for each option.

Lauran 1 year ago

Option B looks like the most cost-effective solution to me. Using the firewall's NAT functionality instead of a separate NAT gateway should save on costs.

Stevie 1 year ago

Hmm, I'm a bit confused about the differences between the Gateway Load Balancer and the Network Load Balancer. I'll need to review the documentation to understand the trade-offs.

Kallie 1 year ago

This seems like a straightforward question about load balancing and firewall configuration. I'll need to carefully consider the cost implications of each option.

Carolynn 1 year ago

I feel confident that I can solve this question. The key is to focus on the cost-effectiveness requirement and understand the differences between the load balancer types and firewall configurations.

Maryann 1 year ago

I'm pretty familiar with VMware Tanzu, so I think I can handle this question. Let me go through the options carefully.

Moon 1 year ago

This looks like a complex question involving currency swaps and credit risk. I'll need to carefully review the information provided and the term structure of interest rates to calculate the value of the swap from the counterparty's perspective.

Brunilda 1 year ago

I feel like we've seen questions similar to this one before. The '*' could be related to the key in the family list type, but I'm second-guessing myself.

Luther 1 year ago

Okay, let's see. I know Linux passwords are encrypted, but I can't remember the specific algorithms off the top of my head. I'll have to review my notes on this.

Arlette 1 year ago

I think cash settled schemes are remeasured at fair value each year, so maybe option A is correct?

Denae 2 years ago

That's true, Buck. Cost is always a big factor to consider in deployments like these.

Buck 2 years ago

I see your point, Nilsa. But option A might be sufficient if the company is looking to minimize costs while still meeting the basic requirements.

Nilsa 2 years ago

I disagree, I believe option B makes more sense because it provides better security with the additional network interface in the public subnet.

Denae 2 years ago

I think option A is the most cost-effective solution.

Rodrigo 2 years ago

I prefer option D. Having two network interfaces can improve performance and security.

Natalie 2 years ago

That's a good point. Option B does provide more flexibility in terms of network interfaces.

Karrie 2 years ago

I disagree. Option B seems better because it allows for better control over the traffic flow.

Natalie 2 years ago

I think option A would be the most cost-effective.

Sylvia 3 years ago

I'm not sure, you guys. I was kind of leaning towards option A, with the Gateway Load Balancer and the NAT gateway. I feel like that might be a bit more scalable and reliable in the long run, even if it's not the absolute cheapest option. But I'm open to being convinced otherwise. What do you all think?

Novella 3 years ago

I'm leaning towards option B as well. The only thing I'm wondering about is the performance impact of having the firewall appliances handle the NAT functionality. I wonder if that could potentially become a bottleneck, especially if we're dealing with high traffic volumes. But overall, I think it's the best option presented here.

Zachary 3 years ago

I agree with Orville on option B. It seems like the most efficient and cost-effective way to meet the requirements. Plus, I like the idea of using the firewall appliances' own NAT functionality instead of relying on a separate NAT gateway. It streamlines the setup and reduces the number of moving parts.

Orville 3 years ago

Hmm, this question seems pretty straightforward. I think option B is the most cost-effective solution here. Using the Gateway Load Balancer and configuring the firewall appliances with two network interfaces, one in a private subnet and another in a public subnet, allows us to leverage the NAT functionality on the firewall appliances to send the traffic to the internet after inspection. This way, we don't need to set up a separate NAT gateway, which would add additional cost.

Stanford 2 years ago

↳ replying to Orville

G: Option B is the way to go for cost-effectiveness and effective deployment.

Louisa 2 years ago

↳ replying to Orville

F: Definitely a smart way to handle the traffic inspection and NAT requirements in the VPC.

Moon 3 years ago

↳ replying to Orville

E: It's a well-thought-out solution for the scenario described.

Christiane 3 years ago

↳ replying to Orville

D: Plus, using the Gateway Load Balancer with the firewall appliances as targets offers efficient traffic management.

Alaine 3 years ago

↳ replying to Orville

C: That's true. It simplifies the architecture and helps cut down on costs.

Jerry 3 years ago

↳ replying to Orville

B: Yeah, I agree. Having the firewall appliances with two network interfaces can save us from setting up an extra NAT gateway.

Maricela 3 years ago

↳ replying to Orville

A: Option B does seem like the most cost-effective choice.

Amazon ANS-C01 Exam - Topic 5 Question 21 Discussion