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Exam AWS Certified Solutions Architect - Professional topic 1 question 493 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional
Question #: 493
Topic #: 1
[All AWS Certified Solutions Architect - Professional Questions]

A company had a tight deadline to migrate its on-premises environment to AWS. It moved over Microsoft SQL Servers and Microsoft Windows Servers using the virtual machine import/export service and rebuild other applications native to the cloud. The team created both Amazon EC2 databases and used Amazon RDS.
Each team in the company was responsible for migrating their applications, and they have created individual accounts for isolation of resources. The company did not have much time to consider costs, but now it would like suggestions on reducing its AWS spend.
Which steps should a Solutions Architect take to reduce costs?

  • A. Enable AWS Business Support and review AWS Trusted Advisor's cost checks. Create Amazon EC2 Auto Scaling groups for applications that experience fluctuating demand. Save AWS Simple Monthly Calculator reports in Amazon S3 for trend analysis. Create a master account under Organizations and have teams join for consolidated billing.
  • B. Enable Cost Explorer and AWS Business Support. Reserve Amazon EC2 and Amazon RDS DB instances. Use Amazon CloudWatch and AWS Trusted Advisor for monitoring and to receive cost-savings suggestions. Create a master account under Organizations and have teams join for consolidated billing.
  • C. Create an AWS Lambda function that changes the instance size based on Amazon CloudWatch alarms. Reserve instances based on AWS Simple Monthly Calculator suggestions. Have an AWS Well-Architected framework review and apply recommendations. Create a master account under Organizations and have teams join for consolidated billing.
  • D. Create a budget and monitor for costs exceeding the budget. Create Amazon EC2 Auto Scaling groups for applications that experience fluctuating demand. Create an AWS Lambda function that changes instance sizes based on Amazon CloudWatch alarms. Have each team upload their bill to an Amazon S3 bucket for analysis of team spending. Use Spot Instances on nightly batch processing jobs.
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by awsec2 at Sept. 23, 2019, 8:54 a.m.
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donathon
Highly Voted 2 years, 7 months ago
B Reserved instances instantly save cost. A: Can’t save Monthly Calculator reports in S3 for trend analysis?? C\D: Changing instance size using Lambda is not possible?
upvoted 25 times
WillCloud
2 years, 5 months ago
AWS Simple Monthly Calculator: It is a tool for budget estimate, not a tool for monitoring resource usage. https://calculator.s3.amazonaws.com/index.html
upvoted 1 times
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shammous
3 months, 2 weeks ago
Using lambda can automate the resizing process but will cost money. Our focus here is cost optimization. B is the best answer.
upvoted 1 times
...
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Moon
Highly Voted 2 years, 7 months ago
My preference is "B". Cost explorer, trusted advisor, are great tools.
upvoted 14 times
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SkyZeroZx
Most Recent 10 months, 1 week ago
Selected Answer: B
AWS Simple Monthly Calculator: It is a tool for budget estimate, not a tool for monitoring resource usage. C\D: Changing instance size using Lambda is not possible? B Reserved instances instantly save cost.
upvoted 1 times
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MAGICLOUD
1 year, 5 months ago
Selected Answer: B
B 100%
upvoted 1 times
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Dionenonly
1 year, 7 months ago
Selected Answer: B
B: 100%
upvoted 1 times
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Mechanic
2 years, 1 month ago
Selected Answer: B
The incorrect thing about A is that it doesn't reduce RDS costs. Going with B.
upvoted 2 times
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cldy
2 years, 4 months ago
B. Enable Cost Explorer and AWS Business Support. Reserve Amazon EC2 and Amazon RDS DB instances. Use Amazon CloudWatch and AWS Trusted Advisor for monitoring and to receive cost-savings suggestions. Create a master account under Organizations and have teams join for consolidated billing.
upvoted 1 times
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AzureDP900
2 years, 4 months ago
I will preferer B over A
upvoted 1 times
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backfringe
2 years, 4 months ago
I'd go with B
upvoted 1 times
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DonSp
2 years, 5 months ago
B's Cost Explorer over A's Simple Monthly Calculator. Although it seems stupid to commit to reserving instances for 1 or 3 years without prior evaluation.
upvoted 1 times
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Shran
2 years, 5 months ago
If database running on EC2, the EC2 cannot put in autoscaling group as database on EC2 is stateful. So right answer is B.
upvoted 1 times
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WhyIronMan
2 years, 5 months ago
I'll go with B
upvoted 1 times
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Waiweng
2 years, 6 months ago
it's B
upvoted 2 times
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Kian1
2 years, 6 months ago
going with B
upvoted 2 times
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Ebi
2 years, 6 months ago
I go with B, All other answer don't make sense
upvoted 3 times
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01037
2 years, 6 months ago
Why is Consolidated Billing needed?
upvoted 1 times
01037
2 years, 6 months ago
https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/useconsolidatedbilling-discounts.html Understood now
upvoted 2 times
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T14102020
2 years, 6 months ago
Correct answer is B. cost explorer, trust advisor, consolidate, reserved
upvoted 1 times
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C (25%)
B (20%)
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