Exam AWS Certified Solutions Architect - Associate SAA-C02 All Questions

View all questions & answers for the AWS Certified Solutions Architect - Associate SAA-C02 exam

Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 270 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C02

Question #: 270
Topic #: 1

[All AWS Certified Solutions Architect - Associate SAA-C02 Questions]

A company has a hybrid application hosted on multiple on-premises servers with static IP addresses. There is already a VPN that provides connectivity between the VPC and the on-premises network. The company wants to distribute TCP traffic across the on-premises servers for internet users.
What should a solutions architect recommend to provide a highly available and scalable solution?

A. Launch an internet-facing Network Load Balancer (NLB) and register on-premises IP addresses with the NLB.
B. Launch an internet-facing Application Load Balancer (ALB) and register on-premises IP addresses with the ALB.
C. Launch an Amazon EC2 instance, attach an Elastic IP address, and distribute traffic to the on-premises servers.
D. Launch an Amazon EC2 instance with public IP addresses in an Auto Scaling group and distribute traffic to the on-premises servers.

Show Suggested Answer

Suggested Answer: A 🗳️

by sctmp at Nov. 3, 2020, 3:44 a.m.

Disclaimers:

- ExamTopics website is not related to, affiliated with, endorsed or authorized by Amazon.
- Trademarks, certification & product names are used for reference only and belong to Amazon.

Comments

Submit Cancel

sctmp

Highly Voted 3 years, 8 months ago

We're talking about Layer 4, it has to be A.

upvoted 62 times

DarthYoda

3 years, 8 months ago

Agreed

upvoted 5 times

...

Eybialot

Highly Voted 3 years, 8 months ago

TCP is NLB A

upvoted 6 times

...

rude7

Most Recent 2 years, 9 months ago

Selected Answer: A

TCP layer 4 = NLB

upvoted 1 times

...

examJack

3 years, 2 months ago

Selected Answer: A

Network Load Balancer components A load balancer serves as the single point of contact for clients. The load balancer distributes incoming traffic across multiple targets, such as Amazon EC2 instances. This increases the availability of your application. You add one or more listeners to your load balancer. A listener checks for connection requests from clients, using the protocol and port that you configure, and forwards requests to a target group. Each target group routes requests to one or more registered targets, such as EC2 instances, using the TCP protocol and the port number that you specify. You can register a target with multiple target groups. You can configure health checks on a per target group basis. Health checks are performed on all targets registered to a target group that is specified in a listener rule for your load balancer. For more information, see the following documentation: * Load Balancers * Listeners * Target Groups https://docs.aws.amazon.com/elasticloadbalancing/latest/network/introduction.html

upvoted 2 times

...

Azure1971

3 years, 7 months ago

Answer is A: ALB & NLB both supports IPs as targets. Questions is based on TCP traffic over VPN to on-premise. TCP is layer 4 and the , load balancer should be NLB. Then next questions does NLB supports loadbalcning traffic over VPN. And answer is YEs based on below URL. https://aws.amazon.com/about-aws/whats-new/2018/09/network-load-balancer-now-supports-aws-vpn/ Target as IPs for NLB & ALB: https://aws.amazon.com/elasticloadbalancing/faqs/?nc=sn&loc=5 https://aws.amazon.com/elasticloadbalancing/application-load-balancer/

upvoted 5 times

...

kenzoxxlarge

3 years, 7 months ago

"Distribute TCP traffic" + "Static IP address" of the application = NLB You CANNOT register the on-premise IP addresses with ALB directly.

upvoted 3 times

...

lc76262

3 years, 7 months ago

Option B is correct as per https://aws.amazon.com/elasticloadbalancing/application-load-balancer/. ALB supports IP addresses as Targets (not available in NLB). IP can be either TCP or UDP. “You can load balance any application hosted in AWS or on-premises using IP addresses of the application backends as targets. This allows load balancing to an application backend hosted on any IP address and any interface on an instance.”

upvoted 1 times

dean_uk2001

3 years, 7 months ago

ALB supports IP address' as targets for Direct connect and VPN. NLB supports IP address' as targets for Direct connect only as per these documents. https://aws.amazon.com/elasticloadbalancing/application-load-balancer/ https://aws.amazon.com/about-aws/whats-new/2017/09/elastic-load-balancing-network-load-balancer-now-supports-load-balancing-to-ip-addresses-as-targets-for-aws-and-on-premises-resources/ May be NLB now has support for VPN too? If so both A & B. IF NLB still doesn't support VPN. Answer B is ALB.

upvoted 1 times

Kinnam

3 years, 7 months ago

Previously, access to Network Load Balancer from on-premises networks was only available over AWS Direct Connect. With this launch, you can access NLB over AWS VPN tunnel. https://aws.amazon.com/about-aws/whats-new/2018/09/network-load-balancer-now-supports-aws-vpn/

upvoted 2 times

...