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Exam AWS Certified Solutions Architect - Professional SAP-C02 topic 1 question 167 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional SAP-C02
Question #: 167
Topic #: 1
[All AWS Certified Solutions Architect - Professional SAP-C02 Questions]

A company is running a web application in a VPC. The web application runs on a group of Amazon EC2 instances behind an Application Load Balancer (ALB). The ALB is using AWS WAF.

An external customer needs to connect to the web application. The company must provide IP addresses to all external customers.

Which solution will meet these requirements with the LEAST operational overhead?

  • A. Replace the ALB with a Network Load Balancer (NLB). Assign an Elastic IP address to the NLB.
  • B. Allocate an Elastic IP address. Assign the Elastic IP address to the ALProvide the Elastic IP address to the customer.
  • C. Create an AWS Global Accelerator standard accelerator. Specify the ALB as the accelerator's endpoint. Provide the accelerator's IP addresses to the customer.
  • D. Configure an Amazon CloudFront distribution. Set the ALB as the origin. Ping the distribution's DNS name to determine the distribution's public IP address. Provide the IP address to the customer.
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Suggested Answer: C 🗳️
by schalke04 at Feb. 2, 2023, 3:47 p.m.
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Untamables
Highly Voted 2 years, 3 months ago
Selected Answer: C
https://docs.aws.amazon.com/global-accelerator/latest/dg/about-accelerators.alb-accelerator.html Option A is wrong. AWS WAF does not support associating with NLB. https://docs.aws.amazon.com/waf/latest/developerguide/waf-chapter.html Option B is wrong. An ALB does not support an Elastic IP address. https://aws.amazon.com/elasticloadbalancing/features/
upvoted 20 times
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masssa
Highly Voted 2 years, 3 months ago
static IP can made below method. ・NLB (replace NLB from ALB) ・NLB + ALB ・global accelarator + ALB ・original load balancer (ex. made by EC2 + nginx)
upvoted 18 times
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AWSum1
Most Recent 7 months, 1 week ago
Selected Answer: C
Global Accelerator provides two global static public IPs that act as a fixed entry point to your application endpoints, such as Application Load Balancers, Network Load Balancers, Amazon Elastic Compute Cloud (EC2) instances, and elastic IPs. https://aws.amazon.com/global-accelerator/
upvoted 1 times
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ninomfr64
1 year, 3 months ago
Selected Answer: C
A = NLB doe not integrates with WAF B = ALB cannot have Elastic IP attached, ALB cannot have static IP at all C = corect D = CloudFront distributions replies from many IPs, AWS manages a prefix list for this. Not easy to configure on customers side
upvoted 5 times
chsiri
5 months, 1 week ago
Why can't we create prefixlist with static ipaddress and assign to Cloudfront
upvoted 1 times
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career360guru
1 year, 4 months ago
Selected Answer: C
Option C
upvoted 1 times
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CProgrammer
1 year, 4 months ago
An Application Load Balancer cannot be assigned an Elastic IP address -- https://aws.amazon.com/blogs/networking-and-content-delivery/using-aws-lambda-to-enable-static-ip-addresses-for-application-load-balancers/
upvoted 1 times
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career360guru
1 year, 5 months ago
Selected Answer: C
Option C has least operational overhead. Option A is possible but changing ALB to NLB requires higher operational effort.
upvoted 2 times
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NikkyDicky
1 year, 10 months ago
Selected Answer: C
C - basic use case for GA
upvoted 1 times
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mfsec
2 years, 1 month ago
Selected Answer: C
C. Create an AWS Global Accelerator standard accelerator.
upvoted 1 times
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God_Is_Love
2 years, 2 months ago
Selected Answer: C
An Application Load Balancer cannot be assigned an Elastic IP address (static IP address). https://stackoverflow.com/questions/55236806/how-to-assign-elastic-ip-to-application-load-balancer-in-aws
upvoted 1 times
God_Is_Love
2 years, 2 months ago
This feature allows you to migrate your applications to AWS without requiring your partners and customers to change their IP address whitelists. (which could be used in WAF) BYOIP - Bring your own IP https://aws.amazon.com/blogs/networking-and-content-delivery/using-bring-your-own-ip-addresses-byoip-with-global-accelerator/
upvoted 2 times
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kiran15789
2 years, 2 months ago
Selected Answer: C
https://aws.amazon.com/premiumsupport/knowledge-center/alb-static-ip/ Can assisng Static IP to ALB
upvoted 1 times
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jojom19980
2 years, 3 months ago
Selected Answer: A
......
upvoted 2 times
CloudInfrastructures
2 years, 3 months ago
C WAF cannot be assoicated with NLB
upvoted 1 times
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masssa
2 years, 3 months ago
NLB cannot be used when WAF is used
upvoted 1 times
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ExamTopix01
2 years, 3 months ago
A https://aws.amazon.com/jp/premiumsupport/knowledge-center/alb-static-ip/
upvoted 1 times
ExamTopix01
2 years, 3 months ago
Sorry C https://docs.aws.amazon.com/global-accelerator/latest/dg/about-accelerators.alb-accelerator.html
upvoted 1 times
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schalke04
2 years, 3 months ago
This solution meets the requirement with the least operational overhead, as it only requires the allocation of an Elastic IP address, assignment to the ALB, and providing the address to the customer. The other options involve configuring additional services, which can increase operational overhead.
upvoted 1 times
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bititan
2 years, 3 months ago
Selected Answer: C
this option has the least admin effort. A has more admin effort, B is not possible, D will not give static IP address
upvoted 4 times
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schalke04
2 years, 3 months ago
Selected Answer: B
B will works
upvoted 1 times
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