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Exam AWS Certified Advanced Networking - Specialty ANS-C01 topic 1 question 73 discussion

Exam question from Amazon's AWS Certified Advanced Networking - Specialty ANS-C01
Question #: 73
Topic #: 1
[All AWS Certified Advanced Networking - Specialty ANS-C01 Questions]

A company is developing an application in which IoT devices will report measurements to the AWS Cloud. The application will have millions of end users. The company observes that the IoT devices cannot support DNS resolution. The company needs to implement an Amazon EC2 Auto Scaling solution so that the IoT devices can connect to an application endpoint without using DNS.

Which solution will meet these requirements MOST cost-effectively?

  • A. Use an Application Load Balancer (ALB)-type target group for a Network Load Balancer (NLB). Create an EC2 Auto Scaling group. Attach the Auto Scaling group to the ALB. Set up the IoT devices to connect to the IP addresses of the NLB.
  • B. Use an AWS Global Accelerator accelerator with an Application Load Balancer (ALB) endpoint. Create an EC2 Auto Scaling group. Attach the Auto Scaling group to the ALSet up the IoT devices to connect to the IP addresses of the accelerator.
  • C. Use a Network Load Balancer (NLB). Create an EC2 Auto Scaling group. Attach the Auto Scaling group to the NLB. Set up the IoT devices to connect to the IP addresses of the NLB.
  • D. Use an AWS Global Accelerator accelerator with a Network Load Balancer (NLB) endpoint. Create an EC2 Auto Scaling group. Attach the Auto Scaling group to the NLB. Set up the IoT devices to connect to the IP addresses of the accelerator.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
Community vote distribution
C (68%)
D (33%)
by ITgeek at April 24, 2023, 4:48 p.m.
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FayeG
Highly Voted 1 year, 5 months ago
Selected Answer: D
The answer requires one to provide the IoT a single IP address. If you use NLB it gives you only one static (or EIP) per AZ. Thus resulting in multiple IP addreses. However a GA can provide a single front end IP to all the static (or EIP) addresses used by the NLB. Thus using an NLB alone is rulled out. Therefore the GA is the correct option. If the Q had stated that the applications where all in the same subnet then C would be correct. but it doesn't so this can't be assumed. See https://aws.amazon.com/elasticloadbalancing/network-load-balancer/
upvoted 11 times
Spaurito
5 months, 3 weeks ago
D - agree, because they can't use DNS resolution, this solution fits the requirements.
upvoted 1 times
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rhinozD
Highly Voted 1 year, 12 months ago
Selected Answer: C
B, C, and D are also doable. Let's think about the cost. AWS Global Accelerator is definitely the best option. but it costs more money. NLB is enough. -> C.
upvoted 11 times
Spaurito
6 months ago
does not mention cost only latency and a single IP address for connectivity
upvoted 1 times
Spaurito
6 months ago
scratch that
upvoted 1 times
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8be7437
Most Recent 3 days, 13 hours ago
Selected Answer: D
There is also "millions" of end users... got to be global accelerator...
upvoted 1 times
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dspd
2 months, 1 week ago
Selected Answer: C
cost effective
upvoted 1 times
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46f094c
3 months, 3 weeks ago
Selected Answer: D
Agree with FayeG. Plus I can't image deploying a million users App with autoscaling in only 1 AZ
upvoted 1 times
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Raphaello
1 year ago
Selected Answer: C
C is the valid solution and most cost-efficient.
upvoted 1 times
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patanjali
1 year, 1 month ago
Selected Answer: C
GA and NLB both provide static IPs. NLB can handle millions of connection request per second. GA is more for global connectivity which is not asked here. Hence, C is correct answer.
upvoted 3 times
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Josh1217
1 year, 9 months ago
Selected Answer: C
A - Not valid B, D - Do not need Global Accelerator C - Best cost effective solution.
upvoted 1 times
Moee
1 year, 9 months ago
WHY a NOT VALID?
upvoted 3 times
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tcp22
1 year, 10 months ago
D is very close but since it's not mentioning the users location hence C is correct
upvoted 2 times
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NeeG
1 year, 11 months ago
Also for users across region, how would NLB Work? I believe GA will solve that problem
upvoted 2 times
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printfmarcelo
1 year, 12 months ago
Selected Answer: C
I agree with Spike2020, Millions of users is NLB.
upvoted 3 times
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Kristin01
1 year, 12 months ago
Selected Answer: C
C, cost effective and also "The NLB automatically provides a static IP address for an AZ" so we can use them
upvoted 4 times
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Spike2020
1 year, 12 months ago
Answer D C is valid but with millions of users, I side with D
upvoted 3 times
Neo00
1 year, 9 months ago
Network Load Balancer is capable of handling millions of requests per second while maintaining ultra-low latencies.
upvoted 1 times
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ITgeek
2 years ago
Selected Answer: C
C is the most cost effective
upvoted 3 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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