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Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 391 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C02
Question #: 391
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C02 Questions]

A company hosts a website on premises and wants to migrate it to the AWS Cloud. The website exposes a single hostname to the internet but it routes its functions to different on-premises server groups based on the path of the URL. The server groups are scaled independently depending on the needs of the functions they support. The company has an AWS Direct Connect connection configured to its on-premises network.
What should a solutions architect do to provide path-based routing to send the traffic to the correct group of servers?

  • A. Route all traffic to an internet gateway. Configure pattern matching rules at the internet gateway to route traffic to the group of servers supporting that path.
  • B. Route all traffic to a Network Load Balancer (NLB) with target groups for each group of servers. Use pattern matching rules at the NLB to route traffic to the correct target group.
  • C. Route all traffic to an Application Load Balancer (ALB). Configure path-based routing at the ALB to route traffic to the correct target group for the servers supporting that path.
  • D. Use Amazon Route 53 as the DNS server. Configure Route 53 path-based alias records to route traffic to the correct Elastic Load Balancer for the group of servers supporting that path.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by dmscountera at March 11, 2021, 6:45 p.m.
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waqas
Highly Voted 3 years, 8 months ago
Its C. ALB do path based routing.
upvoted 43 times
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dmscountera
Highly Voted 3 years, 8 months ago
C. Route all traffic to an Application Load Balancer (ALB). Configure path-based routing at the ALB to route traffic to the correct target group for the servers supporting that path.
upvoted 20 times
noahsark
3 years, 8 months ago
also C here: https://aws.amazon.com/premiumsupport/knowledge-center/elb-achieve-path-based-routing-alb/
upvoted 9 times
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zammusaz304
Most Recent 2 years, 9 months ago
Selected Answer: C
C. Route all traffic to an Application Load Balancer (ALB). Configure path-based routing at the ALB to route traffic to the correct target group for the servers supporting that path.
upvoted 1 times
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ArmenG
3 years, 1 month ago
Selected Answer: C
ALB has path based roouting
upvoted 1 times
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Salem_Express
3 years, 2 months ago
Selected Answer: C
Answer is C. the path-based routing is OSI layer 7 . how on earth it can be done by NLB ? !!
upvoted 2 times
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PrinceMughal
3 years, 4 months ago
Selected Answer: C
Clearly C as ALB can do path base or string base URL targetting.
upvoted 2 times
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SolutionsArchitect
3 years, 5 months ago
Selected Answer: C
Answer is C. ALB does path based routing
upvoted 1 times
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lucesarano
3 years, 7 months ago
C convinced because of the reference here: https://aws.amazon.com/about-aws/whats-new/2017/08/elastic-load-balancing-application-load-balancer-now-supports-load-balancing-to-ip-addresses-as-targets-for-aws-and-on-premises-resources/
upvoted 3 times
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Cotter
3 years, 7 months ago
I think B because NLB provide path-based routing. Why most people vote C?
upvoted 1 times
youthanasia
3 years, 6 months ago
NLB is not able to do path-based routing
upvoted 1 times
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arsharaf
3 years, 7 months ago
C - ALB
upvoted 3 times
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meeko86
3 years, 7 months ago
Answer C https://medium.com/awesome-cloud/aws-difference-between-application-load-balancer-and-network-load-balancer-cb8b6cd296a4 "The first difference is that the Application Load Balancer (as the name implies) works at the Application Layer (Layer 7 of the OSI model). The network load balancer works at layers 3 & 4 (network and transport layers). The network load balancer just forward requests whereas the application load balancer examines the contents of the HTTP request header to determine where to route the request. So, the application load balancer is performing content based routing."
upvoted 7 times
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jkwek
3 years, 7 months ago
Answer is C. https://docs.aws.amazon.com/elasticloadbalancing/latest/application/tutorial-application-load-balancer-cli.html#path-based-routing-aws-cli
upvoted 4 times
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leliodesouza
3 years, 7 months ago
The answer is C.
upvoted 2 times
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KK_uniq
3 years, 7 months ago
C for sure
upvoted 4 times
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syu31svc
3 years, 7 months ago
https://docs.aws.amazon.com/elasticloadbalancing/latest/application/introduction.html https://docs.aws.amazon.com/elasticloadbalancing/latest/application/load-balancer-listeners.html#path-conditions Answer is C
upvoted 5 times
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Majchel
3 years, 8 months ago
Why not "D" ? "...server groups are scaled independently" one ALB can independently add or remove servers from independent groups ?
upvoted 6 times
theCreatorSD
3 years, 7 months ago
Good question it is.
upvoted 1 times
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pr
3 years, 7 months ago
Route53 doesn't support path-based routing, whereas ALB supports path-based routing.
upvoted 6 times
bora4motion
2 years, 10 months ago
so if you have a subdomain and then you point the subdomain to a differen load balancer?
upvoted 1 times
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Sallywhite
3 years, 8 months ago
CCCCccc
upvoted 3 times
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