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Exam AWS Certified Solutions Architect - Associate SAA-C02 All Questions

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Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 73 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C02
Question #: 73
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C02 Questions]

A solutions architect is designing a system to analyze the performance of financial markets while the markets are closed. The system will run a series of compute- intensive jobs for 4 hours every night. The time to complete the compute jobs is expected to remain constant, and jobs cannot be interrupted once started. Once completed, the system is expected to run for a minimum of 1 year.
Which type of Amazon EC2 instances should be used to reduce the cost of the system?

  • A. Spot Instances
  • B. On-Demand Instances
  • C. Standard Reserved Instances
  • D. Scheduled Reserved Instances
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Suggested Answer: B 🗳️
by johnnychun at Aug. 9, 2020, 11:55 a.m.
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eug45
Highly Voted 3 years, 8 months ago
CORRECT: "Scheduled Reserved Instances" is the correct answer. INCORRECT: "Standard Reserved Instances" is incorrect as the workload only runs for 4 hours a day this would be more expensive. INCORRECT: "On-Demand Instances" is incorrect as this would be much more expensive as there is no discount applied. INCORRECT: "Spot Instances" is incorrect as the workload cannot be interrupted once started. With Spot instances workloads can be terminated if the Spot price changes or capacity is required.
upvoted 48 times
Chang401
11 months, 3 weeks ago
I agree answer should be Scheduled Reserved Instances https://aws.amazon.com/compare/the-difference-between-on-demand-instances-and-reserved-instances/#:~:text=A%20Reserved%20Instance%20requires%20a,on%20or%20off%20at%20will.
upvoted 1 times
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Abdullah777
3 years, 7 months ago
this in neal
upvoted 2 times
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sqlquaker
3 years, 7 months ago
Answer D. is correct as of today Jan 2021. I see this Announcement on AWS: "Important We do not have any capacity for purchasing Scheduled Reserved Instances or any plans to make it available in the future. To reserve capacity, use On-Demand Capacity Reservations instead. For discounted rates, use Savings Plans." https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-scheduled-instances.html Keywords 'reduce cost', 'minimum of 1 year', '4 hours every night' leads to Answer D. 'Scheduled Reserved Instances'.
upvoted 13 times
noahsark
3 years, 7 months ago
How can D be the answer? AWS do not have any capacity for purchasing Scheduled Reserved Instances or any plans to make it available in the future.
upvoted 8 times
gargaditya
3 years, 6 months ago
Its to be seen as legacy question,this feature existed before. How else will you address the use case,atleast conceptually?
upvoted 4 times
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Paitan
Highly Voted 3 years, 8 months ago
Scheduled Reserved Instances is the correct option.
upvoted 8 times
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Chang401
Most Recent 11 months, 3 weeks ago
Selected Answer: D
answer should be Scheduled Reserved Instances https://aws.amazon.com/compare/the-difference-between-on-demand-instances-and-reserved-instances/#:~:text=A%20Reserved%20Instance%20requires%20a,on%20or%20off%20at%20will.
upvoted 1 times
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Uzbekistan
1 year, 3 months ago
Selected Answer: D
Scheduled Reserved Instances https://aws.amazon.com/ec2/pricing/reserved-instances/pricing/scheduled-ris/#:~:text=Purchasing%20Reserved%20Instances%20on%20a,periods%20you%20will%20need%20it.
upvoted 1 times
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mfaktas
1 year, 7 months ago
Selected Answer: D
It says minimum 1 year this is one of the hints the other hint is 4 hours every night so there is no other choice other than Scheduled Reserved instances
upvoted 1 times
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AWSStudyBuddy
1 year, 7 months ago
Selected Answer: D
To reduce the cost of the system while running compute-intensive jobs for a fixed duration every night, the most cost-effective option would be to use Spot instances. A. Spot instances: Spot instances allow you to bid on unused EC2 instances in the Spot market, where prices are typically lower compared to On-Demand instances. Since the compute jobs are not time-critical and can be interrupted if the Spot price exceeds your bid, using Spot instances can significantly reduce the cost of the system. Spot instances are a good fit for workloads that are flexible with respect to timing and can tolerate interruptions.
upvoted 1 times
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Madan12345
2 years ago
Selected Answer: D
"Scheduled Reserved Instances" is the correct answer.
upvoted 1 times
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BECAUSE
2 years ago
Selected Answer: B
B is the answer
upvoted 1 times
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Dinya_jui
2 years, 2 months ago
AWS documents clearly states that "You cannot purchase Scheduled Reserved Instances at this time. AWS does not have any capacity available for Scheduled Reserved Instances or any plans to make it available in the future. To reserve capacity, use On-Demand Capacity Reservations instead", so the correct answer is On-Demand
upvoted 1 times
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Sachin032
2 years, 4 months ago
Selected Answer: C
C standard reserved instance
upvoted 1 times
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BATSIE
2 years, 5 months ago
Scheduled Reserved Instances has been deprecated by aws and they recommend to use aws on demand instances has at january 2023
upvoted 1 times
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will2will
2 years, 7 months ago
use On-Demand Capacity Reservations instead.
upvoted 1 times
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mohamed84
2 years, 7 months ago
Selected Answer: D
D. Scheduled Reserved Instances
upvoted 1 times
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qax2022
2 years, 9 months ago
D is correct, " Scheduled Reserved Instances - reserve capacity that is scheduled to recur daily, weekly, or monthly, with a specified start time and duration, for a one-year term. After you complete your purchase, the instances are available to launch during the time windows that you specified."
upvoted 1 times
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Hesham_Eltaher
2 years, 9 months ago
Selected Answer: D
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-scheduled-instances.html
upvoted 1 times
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Akman
2 years, 9 months ago
1000% D https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-scheduled-instances.html
upvoted 1 times
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allanm
2 years, 10 months ago
Answer is C https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-purchasing-options.html Schedule reserved instances is obsolete so D cannot be the answer. Can't be spot instances as the workload needs to be uninterrupted so A isn't the answer. This leaves B and C as options. C is cheaper than B and will meet the 1 year availability criteria so the answer is C - Standard Reserved instances
upvoted 4 times
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