Discuss Amazon ANS-C01 Exam Topic 1 Question 3

A company is hosting an application on Amazon EC2 instances behind a Network Load Balancer (NLB). A solutions architect added EC2 instances in a second Availability Zone to improve the availability of the application. The solutions architect added the instances to the NLB target group.

The company's operations team notices that traffic is being routed only to the instances in the first Availability Zone.

What is the MOST operationally efficient solution to resolve this issue?

AEnable the new Availability Zone on the NLB

BCreate a new NLB for the instances in the second Availability Zone

CEnable proxy protocol on the NLB

DCreate a new target group with the instances in both Availability Zones

Suggested Answer: A

When adding instances in a new Availability Zone to an existing Network Load Balancer (NLB), it is important to ensure that the new Availability Zone is enabled on the NLB. This will allow traffic to be routed to instances in both Availability Zones. This can be done by editing the settings of the NLB and selecting the new Availability Zone from the list of available zones.

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18 comments · newest first

Hershel 11 months ago

Are we sure the NLB isn't already set up for both AZs?

Denny 12 months ago

Definitely need to enable the AZ on the NLB. Makes sense!

Shawnta 12 months ago

Wait, why would you create a new NLB? Seems unnecessary.

Elke 1 year ago

I think creating a new target group is overkill.

Jarvis 1 year ago

Just enable the new AZ on the NLB, right?

Jerry 1 year ago

I wonder if creating a new NLB would be overkill. I feel like we should just enable the AZ on the existing NLB instead.

Odette 1 year ago

I think enabling the new Availability Zone on the NLB is the most straightforward solution. It seems like the simplest fix to get traffic balanced.

Delisa 1 year ago

I'm a bit unsure about this one. I feel like I've seen questions where creating a new target group was the right answer, but I can't recall the specifics.

Xochitl 1 year ago

I remember reading that NLBs need to have all Availability Zones enabled to distribute traffic properly. So, I think option A makes sense.

Lorean 1 year ago

I recall that target groups are important for routing traffic, so option D could be a possibility, but I’m not confident it’s the best solution.

Brittni 1 year ago

I practiced a similar question where enabling proxy protocol was mentioned, but I don't think that's relevant here. Option C seems off.

Rosita 1 year ago

I'm not entirely sure, but I think creating a new NLB for the second AZ seems unnecessary. It feels like option B might not be the most efficient.

Lorrine 1 year ago

I remember something about enabling Availability Zones for load balancers, so maybe option A is the right choice?

Linwood 1 year ago

This seems straightforward - the question is asking for the available app formats, so I'll need to carefully read through the options and select the two that meet the company's device policies.

Sharika 1 year ago

Okay, let's see here. I think the key is to get back to the previous hotfix, so I'm leaning towards option C or B. I'll need to double-check the details, but those seem like the most straightforward approaches.

Mayra 1 year ago

Hmm, this is a tricky one. I know the CUSUM and EWMA charts are generally more sensitive to small shifts, but I'm not familiar with the EWQR chart. I'll have to think this through carefully.

Telma 1 year ago

Hmm, I'm a bit confused. I'm not sure if global or local buffering is the right approach here. Maybe I should review the Fibre Channel and Cisco MDS configuration details again.

Francene 1 year ago

Based on the question, I believe the Web Client Session performance counter is the one I should use to monitor the number of active users. I feel pretty good about this answer.

Amazon ANS-C01 Exam - Topic 1 Question 3 Discussion