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Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 314 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C02
Question #: 314
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C02 Questions]

A company wants to improve the availability and performance of its hybrid application. The application consists of a stateful TCP-based workload hosted on
Amazon EC2 instances in different AWS Regions and a stateless UOP-based workload hosted on premises.
Which combination of actions should a solutions architect take to improve availability and performance? (Choose two.)

  • A. Create an accelerator using AWS Global Accelerator. Add the load balancers as endpoints.
  • B. Create an Amazon CloudFront distribution with an origin that uses Amazon Route 53 latency-based routing to route requests to the load balancers.
  • C. Configure two Application Load Balancers in each Region. The first will route to the EC2 endpoints and the second will route to the on-premises endpoints.
  • D. Configure a Network Load Balancer in each Region to address the EC2 endpoints. Configure a Network Load Balancer in each Region that routes to the on- premises endpoints.
  • E. Configure a Network Load Balancer in each Region to address the EC2 endpoints. Configure an Application Load Balancer in each Region that routes to the on-premises endpoints
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Suggested Answer: AD 🗳️
by tamntse61384 at March 12, 2021, 7:17 a.m.
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Gupshup
Highly Voted 3 years, 6 months ago
Performance -> Global Accelrator ->A TCP -> NLB UDP -> NLB 2NLB -> D
upvoted 44 times
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ansh18061986
Highly Voted 3 years, 6 months ago
Correct options are A&D.
upvoted 10 times
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BECAUSE
Most Recent 1 year, 11 months ago
Selected Answer: AD
A and D are the answers
upvoted 1 times
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YanisGTR
2 years, 2 months ago
UDP/TCP Layer4 = network load balancer so "E-C" Out improve the availability and performance of its hybrid application = Global Accelerator ans = A/D
upvoted 1 times
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naveenagurjara
2 years, 10 months ago
Selected Answer: AD
UDP based and every region will need two NLBs one for local region and another for On Prem
upvoted 1 times
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Arshadul
2 years, 11 months ago
The key points in the question is: --> Hybrid application, TCP/UOP-based workload What is needed? -->Need to improve availability and performance A is correct because Global accelerator is made for availability and performance up to 60%. Load balancers can be added as the end point. D is correct because again the question has mentioned TCP/UOP which means we are talking on network layer so anything that we can do to increase the perf and availability at network layer is add NLB B/C/E are distractors because they are talking about application layer - cloudfront/ALB serves HTTP requests
upvoted 1 times
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examJack
3 years, 1 month ago
Selected Answer: AD
B(X). There is no CloudFront's role in this question. C(X). It seems over-engineering. The business has 'EC2 over several AWS Regions'. don't konw how many. E(X). ALB is for HTTP/HTTPS. not for UDP.
upvoted 2 times
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Gomer
3 years, 5 months ago
I wish someone (intelligent) would elaborate on why one would choose A over B. I see no consideration for B. The A option routes network traffic over Amazon networks (potential speed improvements for larger data transfers), but option B directs the user transparently to the server nearest to him/her (lowest latency) for faster response times. Part of the "magic" of AWS is that they've enhanced their DNS services to track latency and adjust accordingly in the resolution process. Not saying either A or B is right or wrong. I'm just saying I'm not technical enough on the AWS technical side to rule out option B over option A. Let me know if I'm missing something.
upvoted 2 times
Robert_B
3 years, 3 months ago
Reason for A vs B and D also correct is that TCP & UDP traffic (Layer4 - network transport level) can only be distributed via NLB (NOT ALB) and accelerated via Global Accelerator (NOT CloudFront).. ALB if only for Layer7 (App level) & CoudFrond same, only for Layer7 HTTP/HTTPS/websites and S3 mostly.
upvoted 3 times
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induna
3 years, 5 months ago
I am not intelligent but CloudFront is more for content delivery acceleration. The question does not specify that we are serving up lots of content. So we have to go with a solution that will accelerate global routing based on network level traffic which was specified. So A.
upvoted 3 times
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jkwek
3 years, 6 months ago
A and D looks ok. https://docs.aws.amazon.com/elasticloadbalancing/latest/network/introduction.html
upvoted 4 times
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KK_uniq
3 years, 6 months ago
A and D for sure since it is TCP + UDP
upvoted 4 times
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theEngineer
3 years, 6 months ago
A&D seems okay
upvoted 2 times
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syu31svc
3 years, 6 months ago
"TCP-based workload" so that would mean NLB; D over C and E "improve availability and performance" A over B; Global Accelerator
upvoted 4 times
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Sallywhite
3 years, 6 months ago
A and D for me
upvoted 2 times
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waqas
3 years, 6 months ago
Its A & D.
upvoted 2 times
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dmscountera
3 years, 6 months ago
A + D TCP + UDP = 2 NLB
upvoted 2 times
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tamntse61384
3 years, 7 months ago
Ans: A&D
upvoted 3 times
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C (25%)
B (20%)
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