Exam AWS Certified Solutions Architect - Associate SAA-C03 All Questions

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Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 29 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C03

Question #: 29
Topic #: 1

[All AWS Certified Solutions Architect - Associate SAA-C03 Questions]

A company provides a Voice over Internet Protocol (VoIP) service that uses UDP connections. The service consists of Amazon EC2 instances that run in an Auto Scaling group. The company has deployments across multiple AWS Regions.
The company needs to route users to the Region with the lowest latency. The company also needs automated failover between Regions.
Which solution will meet these requirements?

A. Deploy a Network Load Balancer (NLB) and an associated target group. Associate the target group with the Auto Scaling group. Use the NLB as an AWS Global Accelerator endpoint in each Region.
B. Deploy an Application Load Balancer (ALB) and an associated target group. Associate the target group with the Auto Scaling group. Use the ALB as an AWS Global Accelerator endpoint in each Region.
C. Deploy a Network Load Balancer (NLB) and an associated target group. Associate the target group with the Auto Scaling group. Create an Amazon Route 53 latency record that points to aliases for each NLB. Create an Amazon CloudFront distribution that uses the latency record as an origin.
D. Deploy an Application Load Balancer (ALB) and an associated target group. Associate the target group with the Auto Scaling group. Create an Amazon Route 53 weighted record that points to aliases for each ALB. Deploy an Amazon CloudFront distribution that uses the weighted record as an origin.

Show Suggested Answer

Suggested Answer: A 🗳️

by hanhdroid at Oct. 10, 2022, 4:19 p.m.

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Comments

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Six_Fingered_Jose

Highly Voted 2 years, 10 months ago

Selected Answer: A

agree with A, Global Accelerator has automatic failover and is perfect for this scenario with VoIP https://aws.amazon.com/global-accelerator/faqs/

upvoted 64 times

awashenko

1 year, 10 months ago

I also agree A after reading this link.

upvoted 4 times

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bnagaraja9099

1 year, 10 months ago

A - Global Accelerator is a good fit for non-HTTP use cases, such as gaming (UDP), IoT (MQTT), or Voice over IP, as well as for HTTP use cases that specifically require static IP addresses or deterministic, fast regional failover. Both services integrate with AWS Shield for DDoS protection.

upvoted 10 times

TilTil

1 year, 5 months ago

This is the best case for A to be an answer. Cloudfront is great but for HTTP use cases.

upvoted 2 times

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BoboChow

2 years, 9 months ago

Thank you for your link, it make me consolidate A.

upvoted 7 times

bullrem

2 years, 7 months ago

This option does not meet the requirements because AWS Global Accelerator is only used to route traffic to the optimal AWS Region, it does not provide automatic failover between regions.

upvoted 2 times

sachin

2 years, 5 months ago

Instant regional failover: AWS Global Accelerator automatically checks the health of your applications and routes user traffic only to healthy application endpoints. If the health status changes or you make configuration updates, AWS Global Accelerator reacts instantaneously to route your users to the next available endpoint.

upvoted 10 times

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ElaineRan

2 years ago

Thank you, the link also helps me to know the differences between Global Acc and CloudFront.

upvoted 4 times

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mouhannadhaj

Highly Voted 2 years, 9 months ago

Selected Answer: A

CloudFront uses Edge Locations to cache content while Global Accelerator uses Edge Locations to find an optimal pathway to the nearest regional endpoint. CloudFront is designed to handle HTTP protocol meanwhile Global Accelerator is best used for both HTTP and non-HTTP protocols such as TCP and UDP. so i think A is a better answer

upvoted 41 times

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jucejara

Most Recent 1 month, 1 week ago

Selected Answer: A

Global Accelerator = UDP

upvoted 1 times

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Clouddon

1 month, 2 weeks ago

Selected Answer: A

Use AWS Global Accelerator with NLB endpoints in each Region for low-latency, highly available, and UDP-compatible routing — the best fit for a global, real-time VoIP service.

upvoted 1 times

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LEEOscar

3 months ago

Selected Answer: A

UDP Support: UDP traffic (used by VoIP) is not supported by Application Load Balancer (ALB). Network Load Balancer (NLB) does support UDP, making NLB the correct choice. Lowest latency routing: AWS Global Accelerator is designed to route traffic to the AWS Region with the lowest latency. It uses the AWS global network for optimal performance, which is better than Route 53 latency-based routing.

upvoted 3 times

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Juju66

4 months ago

Selected Answer: A

UDP - User Datagram Protocol (UDP) is a transport layer protocol used for sending messages (datagrams) between applications over a network. UDP is part of the Internet Protocol (IP) suite and is defined by Internet Engineering Task Force (IETF) standards in RFC 768.

upvoted 1 times

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lubomir.tomecek

6 months, 2 weeks ago

Selected Answer: A

C is not correct, because Network Loadbalancer is already integrated with Route 53.

upvoted 1 times

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adamatic

6 months, 2 weeks ago

Selected Answer: A

i full understand this is a use case for global accelerator but can anyone tell me why you need a NLB over an ALB here?

upvoted 1 times

adamatic

6 months, 2 weeks ago

oh i see, ALB is for HTTP/HTTPS

upvoted 2 times

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AfricanCloudGuru

6 months, 3 weeks ago

Selected Answer: A

The Nature of the application VoIP needs NLB and Global Accelerator + an auto scalling

upvoted 1 times

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ylanzzz

7 months, 2 weeks ago

Selected Answer: A

cloudfront doenst provide autoatic failover

upvoted 1 times

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satyaammm

7 months, 3 weeks ago

Selected Answer: A

NLB is suitable for UDP and global accelerator is also suitable for UDP.

upvoted 1 times

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AbhishekCloudEngg

7 months, 4 weeks ago

Selected Answer: A

The correct answer is A: Deploy a Network Load Balancer (NLB) and an associated target group. Associate the target group with the Auto Scaling group. Use the NLB as an AWS Global Accelerator endpoint in each Region. Key reasons: NLB supports UDP protocol (required for VoIP), while ALB only handles HTTP/HTTPS Global Accelerator provides: Automatic routing to lowest latency region Built-in cross-region failover Optimized network performance via AWS global network

upvoted 1 times

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minhhieu_tech_1

8 months, 1 week ago

Selected Answer: A

Cloudfront is not support UDP Protocol. So maybe C answer isnt correct.

upvoted 1 times

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EzKkk

9 months ago

Selected Answer: C

I think this is not a very well written one. What we need: 1, Network Service that handles latency based policy and cross region failover -> Route53 2, A component that route traffic to ASG that are compatible with UDP -> Network Load Balancer.

upvoted 1 times

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Bobby3

1 year ago

Selected Answer: C

Aws GA is most suitable for https.

upvoted 1 times

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bishtr3

1 year, 1 month ago

A : UDP so NLB and Global Accelerator reduces the number of hops by providing packets to travel over congestion free AWS global network. Global Accelerator supported end point : ALB,NLB,EC2 & Elastic IP address

upvoted 2 times

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jatric

1 year, 1 month ago

Selected Answer: A

you can configure a Network Load Balancer (NLB) in each AWS Region to address your on-premises endpoints. Then you can register the NLBs as endpoints in your AWS Global Accelerator configuration. https://aws.amazon.com/global-accelerator/faqs/

upvoted 2 times

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