Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 471 discussion

Answer should be (A), since we are required to be able to handle 3 million request per second. A NLB is able to handle up to tens of millions of requests per second, while providing high performance and low latency. https://aws.amazon.com/blogs/aws/new-network-load-balancer-effortless-scaling-to-millions-of-requests-per-second/

Looks to be A to me: https://aws.amazon.com/elasticloadbalancing/network-load-balancer Network Load Balancer operates at the connection level (Layer 4), routing connections to targets (Amazon EC2 instances, microservices, and containers) within Amazon VPC, based on IP protocol data. Ideal for load balancing of both TCP and UDP traffic, Network Load Balancer is capable of handling millions of requests per second while maintaining ultra-low latencies. Network Load Balancer is optimized to handle sudden and volatile traffic patterns while using a single static IP address per Availability Zone. It is integrated with other popular AWS services such as Auto Scaling, Amazon EC2 Container Service (ECS), Amazon CloudFormation, and AWS Certificate Manager (ACM).

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Answer should be A

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Answer should be (A)

Agreed with A. Need NLB to handle million request per second.

A -> Correct B -> Wrong, ALB dont support TCP C-> Wong, CloudFront supports HTTP, HTTPS, and Websockets as distribution protocols. Dont' Support TCP D -> Wrong, Amazon API Gateway AP, can only support 1000 request per second.

Definitely A, TCP/UDP -> Network Load Balancer

Cannot be D because API Gateway has a limit of 10000 request per second

Network Load Balancer is for TCP so it is option A

TCP & milliseconds means NLB

NLB is fast and can handle UDP/TCP. Question tricks you into the unsupported port, but that is on-prem situation, not the case for AWS. ALB behind, even with CloudFront will not be able to support the no of requests/second.

ALB doesn't support TCP and have more latency than 3 MS.

A. Deploy a Network Load Balancer (NLB). Configure the NLB to be publicly accessible over the TCP port that the application requires. - Correct. B. Deploy an Application Load Balancer (ALB). Configure the ALB to be publicly accessible over the TCP port that the application requires. - Wrong. "TCP-based application" - this is Layer 4 of the OSI model, we can eliminate ALBs. Only NLBs will be able to route L4 TCP traffic. C. Deploy an Amazon CloudFront distribution that listens on the TCP port that the application requires. Use an Application Load Balancer as the origin. - Wrong. "TCP-based application" - this is Layer 4 of the OSI model, we can eliminate ALBs. Only NLBs will be able to route L4 TCP traffic. D. Deploy an Amazon API Gateway API that is configured with the TCP port that the application requires. Configure AWS Lambda functions with provisioned concurrency to process the requests. - Wrong. API Gateway has default throttling of 10K RPS (https://docs.aws.amazon.com/apigateway/latest/developerguide/limits.html). We need 3M RPS

A is correct