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Exam AWS Certified Solutions Architect - Professional topic 1 question 92 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional
Question #: 92
Topic #: 1
[All AWS Certified Solutions Architect - Professional Questions]

You are designing a multi-platform web application for AWS The application will run on EC2 instances and will be accessed from PCs. Tablets and smart phones
Supported accessing platforms are Windows, MacOS, IOS and Android Separate sticky session and SSL certificate setups are required for different platform types.
Which of the following describes the most cost effective and performance efficient architecture setup?

  • A. Setup a hybrid architecture to handle session state and SSL certificates on-prem and separate EC2 Instance groups running web applications for different platform types running in a VPC.
  • B. Set up one ELB for all platforms to distribute load among multiple instance under it Each EC2 instance implements ail functionality for a particular platform.
  • C. Set up two ELBs The first ELB handles SSL certificates for all platforms and the second ELB handles session stickiness for all platforms for each ELB run separate EC2 instance groups to handle the web application for each platform.
  • D. Assign multiple ELBS to an EC2 instance or group of EC2 instances running the common components of the web application, one ELB for each platform type Session stickiness and SSL termination are done at the ELBs.
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
by tan9 at Dec. 13, 2019, 2:51 a.m.
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tan9
Highly Voted 3 years, 7 months ago
D is a bit out-dated. See "Application Load Balancers Now Support Multiple TLS Certificates With Smart Selection Using SNI" at https://aws.amazon.com/blogs/aws/new-application-load-balancer-sni/
upvoted 14 times
dojo
3 years, 7 months ago
Yes, ELB now supports SNI based certificates. Offload SSL for all sites at one place.
upvoted 4 times
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01037
3 years, 6 months ago
Yes. So maybe B could be a correct answer
upvoted 2 times
DashL
3 years, 6 months ago
As I understand from the question "Separate sticky session and SSL certificate setups are required for different platform types" - there will be different sticky session setup for different platforms. The question says ELB - assuming we can generalize ALB for an ELB, the ALB can handle multiple SSL Certs using SNI. How one ELB will handle different sticky session for different platform types? So, the only valid answer is D
upvoted 1 times
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amministrazione
Most Recent 8 months, 3 weeks ago
D. Assign multiple ELBS to an EC2 instance or group of EC2 instances running the common components of the web application, one ELB for each platform type Session stickiness and SSL termination are done at the ELBs.
upvoted 1 times
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JPA210
1 year, 2 months ago
Selected Answer: B
I agree with TigerInTheCloud: ALB supports multiple certificates and can distribute the traffic based on the host header, Path, or HTTP header (which contains the user-agent) to the different target groups, and the stickiness can be configured on the rule or the target group level.
upvoted 1 times
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hobokabobo
2 years, 4 months ago
Selected Answer: D
Well the solution should be D. In reality it will not work. Certificates support in ELB is rudimentary at best. It only supports a small set of certificates. Meaning in production, when security matters, it cannot be used. ALB might be worth looking at....
upvoted 1 times
hobokabobo
2 years, 4 months ago
On second thought, I assume too much. I assumed ELB is Classic Loadbalancer. It does not say so. Selection of D is only true with that assumption. Its just for ALB the answers don't make sense: one would head for rules to distinguish and has support for most certs ... should most probably work.
upvoted 1 times
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TigerInTheCloud
2 years, 4 months ago
Selected Answer: B
D is a bit outdated. ALB supports multiple certificates and can distribute the traffic based on the host header, Path, or HTTP header (which contains the user-agent) to the different target groups, and the stickiness can be configured on the rule or the target group level.
upvoted 2 times
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Dohecadi
3 years, 1 month ago
Selected Answer: D
Answer is D. Question states: "Different platform types need distinct sticky session and SSL certificate configurations." ELB does not support more than one certificate per load balancer. You wil need a load balancer per platform.
upvoted 1 times
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cldy
3 years, 4 months ago
B. Set up one ELB for all platforms to distribute load among multiple instance under it Each EC2 instance implements ail functionality for a particular platform.
upvoted 2 times
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halfdeaf
3 years, 6 months ago
Question seems to be old, ELB now supports multiple TLS certificate addition using SNI. So answer would be B
upvoted 1 times
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manoj101
3 years, 6 months ago
B is correct. ELB supports SNI Based Certificates that allow multiple certs on single ELB.
upvoted 3 times
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fullaws
3 years, 6 months ago
D is correct previously as sticky session only support HTTP/HTTPS listener which enforce SSL termination on ELB. For latest AWS will be B as ALB support SNI based certificate.
upvoted 2 times
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manoj101
3 years, 6 months ago
If D is not valid do you think B is the right answer or C
upvoted 1 times
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CloudFloater
3 years, 6 months ago
D http://jayendrapatil.com/aws-elastic-load-balancing/ Assign multiple ELBs to an EC2 instance or group of EC2 instances running the common components of the web application, one ELB for each platform type. Session stickiness and SSL termination are done at the ELBs. (Session stickiness requires HTTPS listener with SSL termination on the ELB and ELB does not support multiple SSL certs so one is required for each cert)
upvoted 1 times
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vijay1319
3 years, 7 months ago
Agree. D is the right answer.
upvoted 2 times
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amog
3 years, 7 months ago
Answer is D
upvoted 1 times
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AWSKeener
3 years, 7 months ago
Complete option text: Assign multiple ELBs to an EC2 instance or group of EC2 instances running the common components of the web application, one ELB for each platform type. Session stickiness and SSL termination are done at the ELBs.
upvoted 2 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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