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 230 discussion

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

Question #: 230
Topic #: 1

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

A company is concerned that two NAT instances in use will no longer be able to support the traffic needed for the company’s application. A solutions architect wants to implement a solution that is highly available, fault tolerant, and automatically scalable.

What should the solutions architect recommend?

A. Remove the two NAT instances and replace them with two NAT gateways in the same Availability Zone.
B. Use Auto Scaling groups with Network Load Balancers for the NAT instances in different Availability Zones.
C. Remove the two NAT instances and replace them with two NAT gateways in different Availability Zones.
D. Replace the two NAT instances with Spot Instances in different Availability Zones and deploy a Network Load Balancer.

Show Suggested Answer

Suggested Answer: C 🗳️

by mhmt4438 at Jan. 14, 2023, 7:57 p.m.

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Comments

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Bhrino

Highly Voted 1 year, 10 months ago

Selected Answer: C

fyi yall in most cases nat instances are a bad thing because their customer managed while nat gateways are AWS Managed. So in this case I already know to get rid of the nat instances the reason its c is because it wants high availability meaning different AZs

upvoted 7 times

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pentium75

Highly Voted 1 year ago

Selected Answer: C

See https://docs.aws.amazon.com/vpc/latest/userguide/vpc-nat-comparison.html

upvoted 7 times

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bora4motion

Most Recent 1 month, 2 weeks ago

Selected Answer: C

c is correct, nat instances are obsolete anyways

upvoted 1 times

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satyaammm

4 months, 1 week ago

Selected Answer: C

NAT Gateways in 2 different AZ's is the most suitable option here.

upvoted 1 times

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MiniYang

1 year ago

Selected Answer: B

Highly available, fault tolerant and automatically scalable=> Autoscaling and Diffrent AZ

upvoted 1 times

pentium75

1 year ago

NAT instances are legacy technology. "If you're already using a NAT instance, we recommend that you replace it with a NAT gateway." Thus C. https://docs.aws.amazon.com/vpc/latest/userguide/vpc-nat-comparison.html

upvoted 3 times

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TariqKipkemei

1 year, 3 months ago

Selected Answer: C

Highly available, fault tolerant, and automatically scalable = two NAT gateways in different Availability Zones

upvoted 3 times

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Undisputed

1 year, 5 months ago

Selected Answer: C

Remove the two NAT instances and replace them with two NAT gateways in different Availability Zones

upvoted 2 times

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cookieMr

1 year, 6 months ago

Selected Answer: C

This recommendation ensures high availability and fault tolerance by distributing the NAT gateways across multiple AZs. NAT gateways are managed AWS services that provide scalable and highly available outbound NAT functionality. By deploying NAT gateways in differentAZs, the company can achieve redundancy and avoid a single point of failure. This solution also provides automatic scaling to handle increasing traffic without manual intervention. Option A is incorrect because placing both NAT gateways in the same Availability Zone does not provide fault tolerance. Option B is incorrect because using Auto Scaling groups with Network Load Balancers is not the recommended approach for NAT instances. Option D is incorrect because Spot Instances are not suitable for critical infrastructure components like NAT instances.

upvoted 5 times

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Axeashes

1 year, 6 months ago

Selected Answer: C

HA: https://docs.aws.amazon.com/vpc/latest/userguide/vpc-nat-comparison.html Scalability: https://docs.aws.amazon.com/vpc/latest/userguide/vpc-nat-gateway.html

upvoted 2 times

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Theodorz

1 year, 10 months ago

Could anybody teach me why the B cannot be correct answer? This solution also seems providing Scalability(Auto Scaling Group), High Availability(different AZ), and Fault Tolerance(NLB & AZ). I honestly think that C is not enough, because each NAT gateway can provide a few scalability, but the bandwidth limit is clearly explained in the document. The C exactly mentioned "two NAT gateways" so the number of NAT is fixed, which will reach its limit soon.

upvoted 3 times

KZM

1 year, 10 months ago

Option B proposes to use an Auto Scaling group with Network Load Balancers to continue using the existing two NAT instances. However, NAT instances do not support automatic failover without a script, unlike NAT gateways which provide this functionality. Additionally, using Network Load Balancers to balance traffic between NAT instances adds more complexity to the solution. https://docs.aws.amazon.com/vpc/latest/userguide/vpc-nat-comparison.html

upvoted 3 times

mwwt2022

1 year ago

Thx for your explanation!

upvoted 1 times

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JayBee65

1 year, 11 months ago

C. If you have resources in multiple Availability Zones and they share one NAT gateway, and if the NAT gateway’s Availability Zone is down, resources in the other Availability Zones lose internet access. To create an Availability Zone-independent architecture, create a NAT gateway in each Availability Zone and configure your routing to ensure that resources use the NAT gateway in the same Availability Zone. https://docs.aws.amazon.com/vpc/latest/userguide/vpc-nat-gateway.html#nat-gateway-basics

upvoted 3 times

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techhb

1 year, 11 months ago

Selected Answer: C

Replace NAT Instances with Gateway

upvoted 2 times

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mhmt4438

1 year, 11 months ago

Selected Answer: C

Correct answer is C

upvoted 3 times

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