ExamTopics Logo
Mail Us[email protected]
Menu
Amazon Discussions
exam questions

Exam AWS Certified Solutions Architect - Associate SAA-C03 All Questions

View all questions & answers for the AWS Certified Solutions Architect - Associate SAA-C03 exam
Go to Exam

Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 75 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C03
Question #: 75
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C03 Questions]

A company wants to move a multi-tiered application from on premises to the AWS Cloud to improve the application's performance. The application consists of application tiers that communicate with each other by way of RESTful services. Transactions are dropped when one tier becomes overloaded. A solutions architect must design a solution that resolves these issues and modernizes the application.
Which solution meets these requirements and is the MOST operationally efficient?

  • A. Use Amazon API Gateway and direct transactions to the AWS Lambda functions as the application layer. Use Amazon Simple Queue Service (Amazon SQS) as the communication layer between application services.
  • B. Use Amazon CloudWatch metrics to analyze the application performance history to determine the servers' peak utilization during the performance failures. Increase the size of the application server's Amazon EC2 instances to meet the peak requirements.
  • C. Use Amazon Simple Notification Service (Amazon SNS) to handle the messaging between application servers running on Amazon EC2 in an Auto Scaling group. Use Amazon CloudWatch to monitor the SNS queue length and scale up and down as required.
  • D. Use Amazon Simple Queue Service (Amazon SQS) to handle the messaging between application servers running on Amazon EC2 in an Auto Scaling group. Use Amazon CloudWatch to monitor the SQS queue length and scale up when communication failures are detected.
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by cark0728 at Oct. 21, 2022, 1:17 p.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

Chosen Answer:
This is a voting comment (?). It is better to Upvote an existing comment if you don't have anything to add.
Switch to a voting comment New
Submit Cancel
gcmrjbr
Highly Voted 2 years, 3 months ago
Agree with A>>> Lambda = serverless + autoscale (modernize), SQS= decouple (no more drops)
upvoted 43 times
...
LuckyAro
Highly Voted 2 years ago
Selected Answer: A
The catch phrase is "scale up when communication failures are detected" Scaling should not be based on communication failures, that'll be crying over spilled milk ! or rather too late. So D is wrong.
upvoted 24 times
mauroicardi
10 months, 4 weeks ago
Spot on
upvoted 1 times
...
remand
2 years ago
it says "one tier becomes overloaded" , Not communication failure...
upvoted 3 times
LuckyAro
1 year, 12 months ago
D says: "Use Amazon CloudWatch to monitor the SQS queue length and scale up when communication failures are detected".
upvoted 4 times
...
...
...
Dharmarajan
Most Recent 1 week, 1 day ago
Selected Answer: A
Clearly A, it significantly reduces operational work. All the other options involve some maintenance and cause additional operational work to maintain the EC2instances and ASG.
upvoted 1 times
...
satyaammm
1 month ago
Selected Answer: A
Using serverless services like API Gateway and AWS Lambda and SQS helps resolve this problem with the least operational overhead.
upvoted 1 times
...
19d92c7
3 months, 2 weeks ago
why its not c?
upvoted 1 times
manabpokhrel7
3 months, 1 week ago
Operational overhead plus SNS isnt durable like SQS
upvoted 2 times
...
...
PaulGa
4 months, 3 weeks ago
Selected Answer: A
Ans A - keep it simple: API Gateway + Lambda + SQS D won't work: it relies upon a failure detected - by then its too late)
upvoted 2 times
...
344bba0
7 months, 1 week ago
Selected Answer: A
The answer choice D cannot be the answer because CloudWatch is not an appropriate way to monitor transaction failures. I would have been more confused about it if CloudWatch hadn't been mentioned.
upvoted 2 times
...
SMALLE
12 months ago
RESTful services = API Gateways https://docs.aws.amazon.com/apigateway/latest/developerguide/welcome.html
upvoted 4 times
...
awsgeek75
1 year ago
Selected Answer: A
Least operational overhead = API Gateway + Lambda + SQS BC wrong applications D: Will work but more operational overhead than A with less resilience to failures
upvoted 3 times
...
pentium75
1 year, 1 month ago
Selected Answer: A
You want to "modernize the application", that a modern application is serverless, in any case a modern application does NOT use EC2 instances. Also, managing EC2 instances (with the OS etc pp) is NOT "operationally efficient". Thus not D.
upvoted 4 times
...
anikolov
1 year, 1 month ago
Selected Answer: C
For me the solution could be based on using SNS with multiple topics to organize communication between different tiers ( Using Subscriber for one and Producer for another topic to proceed with transactions over multi-tiers ). CloudWatch to monitor SNS topics queue length and scale up/down based on counts of messages (NumberOfMessagesPublished)
upvoted 1 times
MadMarc
7 months, 2 weeks ago
The question asks for the most operationally efficient solution. The answer A is serverless, while the answer C is VM-based. There is no scenario where managin VMs is operationally more efficient than going serverless. If Operational Efficiency is what you look for, then you should always consider going serverless.
upvoted 2 times
...
pentium75
1 year, 1 month ago
Wouldn't the scaling take some time? If there is queue length, then one tier IS already overloaded.
upvoted 2 times
...
...
MrPCarrot
1 year, 2 months ago
A is the perfect answer no need for the ASG
upvoted 2 times
...
xdkonorek2
1 year, 3 months ago
Selected Answer: D
D is better because in answer A there is a bottleneck on a SQS - service app, D is as operationally efficient as A and solves the above issue
upvoted 2 times
...
tom_cruise
1 year, 3 months ago
Selected Answer: A
ASG is not as efficient as Lambda!
upvoted 2 times
...
vijaykamal
1 year, 4 months ago
I feel the answer is D, Lambda would increase the complexity and overhead and it has limitation of running for 15 min.
upvoted 4 times
pentium75
1 year, 1 month ago
How would Lambda increase the operational (!) complexity over handling and scaling servers (and their operating systems and patches etc.) on EC2?
upvoted 2 times
...
...
TariqKipkemei
1 year, 5 months ago
Selected Answer: A
MOST operationally efficient = Serverless = AWS Lambda functions, Amazon Simple Queue Service
upvoted 1 times
...
zjcorpuz
1 year, 6 months ago
A and D are both good solution however A will suffice the requirement as it is the most operational efficient for modern applications, AWS Lambda will scale elastically when application will become overloaded and the fact that it is serverless. SQS will handle the queue as well..
upvoted 2 times
...
Load full discussion...
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.

Upvoting a comment with a selected answer will also increase the vote count towards that answer by one. So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.

SaveCancel
exam
Someone Bought Contributor Access for:
SY0-701
London, 1 minute ago