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

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Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 47 discussion

A company needs guaranteed Amazon EC2 capacity in three specific Availability Zones in a specific AWS Region for an upcoming event that will last 1 week.
What should the company do to guarantee the EC2 capacity?

  • A. Purchase Reserved Instances that specify the Region needed.
  • B. Create an On-Demand Capacity Reservation that specifies the Region needed.
  • C. Purchase Reserved Instances that specify the Region and three Availability Zones needed.
  • D. Create an On-Demand Capacity Reservation that specifies the Region and three Availability Zones needed.
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Suggested Answer: D 🗳️

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Incognito013
Highly Voted 2 years, 5 months ago
Reserved instances are for long term so on-demand will be the right choice - Answer D
upvoted 34 times
simoneric88
1 year, 2 months ago
Confirmed! Reserved instances require a fixed one-year or three-year commitment. See https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-capacity-reservations.html#capacity-reservations-differences
upvoted 6 times
tch
6 days, 7 hours ago
Amazon EC2 billing and purchasing options https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-purchasing-options.html
upvoted 1 times
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tch
6 days, 7 hours ago
Reserved Instances – Reduce your Amazon EC2 costs by making a commitment to a consistent instance configuration, including instance type and Region, for a term of 1 or 3 years. Capacity Reservations – Reserve capacity for your EC2 instances in a specific Availability Zone.
upvoted 1 times
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Buruguduystunstugudunstuy
Highly Voted 2 years, 3 months ago
Selected Answer: D
***CORRECT*** Option D. Create an On-Demand Capacity Reservation that specifies the Region and three Availability Zones needed. An On-Demand Capacity Reservation is a type of Amazon EC2 reservation that enables you to create and manage reserved capacity on Amazon EC2. With an On-Demand Capacity Reservation, you can specify the Region and Availability Zones where you want to reserve capacity, and the number of EC2 instances you want to reserve. This allows you to guarantee capacity in specific Availability Zones in a specific Region. ***WRONG*** Option A, purchasing Reserved Instances that specify the Region needed, would not guarantee capacity in specific Availability Zones. Option B, creating an On-Demand Capacity Reservation that specifies the Region needed, would not guarantee capacity in specific Availability Zones. Option C, purchasing Reserved Instances that specify the Region and three Availability Zones needed, would not guarantee capacity in specific Availability Zones as Reserved Instances do not provide capacity reservations.
upvoted 26 times
BlueVolcano1
2 years, 2 months ago
Another reason as to why Reserved Instances aren't the solution here is that you have to commit to either a 1 year or 3 year term, not 1 week.
upvoted 22 times
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tch
Most Recent 6 days, 7 hours ago
Reserved Instances – Reduce your Amazon EC2 costs by making a commitment to a consistent instance configuration, including instance type and Region, for a term of 1 or 3 years. Capacity Reservations – Reserve capacity for your EC2 instances in a specific Availability Zone. do not confuse
upvoted 1 times
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Rcosmos
2 months, 2 weeks ago
Selected Answer: D
A Opção D (Reserva de capacidade sob demanda especificando a região e as zonas de disponibilidade) é a melhor solução, pois garante a capacidade necessária nas zonas de disponibilidade específicas para um evento de curta duração, atendendo ao requisito de forma eficiente e econômica.
upvoted 1 times
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satyaammm
2 months, 4 weeks ago
Selected Answer: D
On-demand capacity instances in the required region and required availability zones is the most suitable here.
upvoted 1 times
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friday_test
4 months, 2 weeks ago
Reserved instances offer either a 1 year or 3 year term commitment. So on demand-instances would satisfy the need above. The answer is D , as the question also requires availability zones.
upvoted 1 times
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Edawg173
12 months ago
i always get these wrong
upvoted 2 times
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TilTil
1 year ago
Selected Answer: D
Picked C for this one and failed. Reserved Instances are reserved for 1-3 years so On-Demand Reservation makes more sense.
upvoted 3 times
JA2018
4 months, 3 weeks ago
Check out https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-capacity-reservations.html#capacity-reservations-differences Terms for Capacity Reservations: No commitment required. Can be created and canceled as needed.
upvoted 1 times
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awsgeek75
1 year, 2 months ago
Selected Answer: D
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-capacity-reservations.html "On-Demand Capacity Reservations enable you to reserve compute capacity for your Amazon EC2 instances in a specific Availability Zone for any duration"
upvoted 2 times
awsgeek75
1 year, 2 months ago
Just to avoid any confusion, Reserved Instance also guarantee capacity reservation. However, the reason why we don't need Reserved Instances is because they are reserved for a duration of 1 to 3 years with a lock-in contract (no refunds!). The company is only interested in reserved capacity for a week so D is the best solution. https://aws.amazon.com/compare/the-difference-between-on-demand-instances-and-reserved-instances/
upvoted 2 times
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[Removed]
1 year, 4 months ago
Guarantee capacity on 3 AZ - on demand reservation, specify region & Availability Zone
upvoted 1 times
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Ruffyit
1 year, 5 months ago
***CORRECT*** Option D. Create an On-Demand Capacity Reservation that specifies the Region and three Availability Zones needed. An On-Demand Capacity Reservation is a type of Amazon EC2 reservation that enables you to create and manage reserved capacity on Amazon EC2. With an On-Demand Capacity Reservation, you can specify the Region and Availability Zones where you want to reserve capacity, and the number of EC2 instances you want to reserve. This allows you to guarantee capacity in specific Availability Zones in a specific Region.
upvoted 2 times
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awashenko
1 year, 5 months ago
Selected Answer: D
Reserved Instances have a commitment over a year so those are out. Option B only allows you to specify the Region and not the AZ. Therefore, D is the only solution.
upvoted 2 times
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Abdou1604
1 year, 7 months ago
its B , On-Demand Capacity Reservation allows you to reserve capacity for Amazon EC2 instances in a specific AWS Region, without specifying specific Availability Zones
upvoted 1 times
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Guru4Cloud
1 year, 7 months ago
Selected Answer: D
D is the correct option to guarantee EC2 capacity in specific Availability Zones for a set timeframe. On-Demand Capacity Reservations allow you to reserve EC2 capacity across specific Availability Zones for any duration. This guarantees you will have access to those resources.
upvoted 2 times
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miki111
1 year, 8 months ago
Option D is the right answer.
upvoted 1 times
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cookieMr
1 year, 9 months ago
Selected Answer: D
The most appropriate option to guarantee EC2 capacity in three specific Availability Zones in the desired AWS Region for the 1-week event is to create an On-Demand Capacity Reservation that specifies the Region and three Availability Zones (option D). A. Purchasing Reserved Instances that specify the Region needed does not guarantee capacity in specific Availability Zones. B. Creating an On-Demand Capacity Reservation without specifying the Availability Zones would not guarantee capacity in the desired zones. C. Purchasing Reserved Instances that specify the Region and three Availability Zones is not necessary for a short-term event and involves longer-term commitments.
upvoted 4 times
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Abrar2022
1 year, 10 months ago
Reserved instances is for long term On-demand Capacity reservation enables you to choose specific AZ for any duration
upvoted 1 times
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A (35%)
C (25%)
B (20%)
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