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AWS > EC2 Pricing Models > Flashcards

EC2 Pricing Models Flashcards

1
Q

You want to run a questionnaire application for only one day (without interruption), which Amazon EC2 purchase option should you use?
Reserved instances.
Spot instances.
Dedicated instances.
On-demand instances.

A

On-demand instances

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2
Q

You are working on a project that involves creating thumbnails of millions of images. Consistent uptime is not an issue, and continuous processing is not required. Which EC2 buying option would be the most cost-effective?
Reserved Instances.
On-demand Instances.
Dedicated Instances.
Spot Instances.

A

Spot Instances.

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3
Q

A company needs to host a database in Amazon RDS for at least three years. Which of the following options would be the most cost-effective solution?
Reserved instances - No Upfront.
Reserved instances - Partial Upfront.
On-Demand instances.
Spot Instances.

A

Reserved instances - Partial Upfront.

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4
Q

A company has developed a media transcoding application in AWS. The application is designed to recover quickly from hardware failures. Which one of the following types of instance would be the most cost-effective choice to use?
Reserved instances.
Spot Instances.
On-Demand instances.
Dedicated instances.

A

Spot Instances.

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5
Q

What is the most cost-effective purchasing option for running a set of EC2 instances that must always be available for a period of two months?
On-Demand Instances.
Spot Instances.
Reserved Instances - All Upfront.
Reserved Instances - No Upfront.

A

On-Demand Instances.

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6
Q

A company needs to migrate their website from on-premises to AWS. Security is a major concern for them, so they need to host their website on hardware that is NOT shared with other AWS customers. Which of the following EC2 instance options meets this requirement?
On-demand instances.
Spot instances.
Dedicated instances.
Reserved instances

A

Dedicated instances.

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7
Q

A company is migrating a web application to AWS. The application’s compute capacity is continually utilized throughout the year. Which of the below options offers the company the most cost-effective solution?
On-demand Instances.
Dedicated Hosts.
Spot Instances.
Reserved Instances.

A

Reserved Instances.

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8
Q

A company’s AWS workflow requires that it periodically perform large-scale image and video processing jobs. The customer is seeking to minimize cost and has stated that the amount of time it takes to process these jobs is not critical, but that cost minimization is the most important factor in designing the solution. Which EC2 instance class is best suited for this processing?
EC2 On-Demand Instances.
EC2 Reserved Instances - No Upfront.
EC2 Spot Instances.
EC2 Reserved Instances - All Upfront.

A

EC2 Spot Instances.

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9
Q

For compliance and regulatory purposes, a government agency requires that their applications must run on hardware that is dedicated to them only. How can you meet this requirement?
Use EC2 Dedicated Hosts.
Use EC2 Reserved Instances.
Use EC2 Spot Instances.
Use EC2 On-demand Instances

A

Use EC2 Dedicated Hosts.

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10
Q

You are planning to launch an advertising campaign over the coming weekend to promote a new digital product. It is expected that there will be heavy spikes in load during the campaign period, and you can’t afford any downtime. You need additional compute resources to handle the additional load. What is the most cost-effective EC2 instance purchasing option for this job?
Savings Plans.
Spot Instances.
Reserved Instances.
On-Demand Instances.

A

On-Demand Instances.

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11
Q

A user is planning to launch two additional Amazon EC2 instances to increase availability. Which action should the user take?
Launch the instances across multiple Availability Zones in a single AWS Region.
Launch the instances as EC2 Reserved Instances in the same AWS Region and the same Availability Zone.
Launch the instances in multiple AWS Regions but in the same Availability Zone.
Launch the instances as EC2 Spot Instances in the same AWS Region but in different Availability Zones.

A

Launch the instances across multiple Availability Zones in a single AWS Region.

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12
Q

A user must meet compliance and software licensing requirements that state a workload must be hosted on a physical server. When Amazon EC2 instance pricing option will meet these requirements?
Dedicated Hosts.
Dedicated Instances.
Spot Instances.
Reserved Instances.

A

Dedicated Hosts.

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13
Q

When should a company consider using Amazon EC2 Spot Instances? (Select TWO)
For non-production applications.
For stateful workloads.
For applications that cannot have interruptions.
For fault-tolerant flexible applications.
For sensitive database applications.

A

For non-production applications.
For fault-tolerant flexible applications.

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14
Q

Which of the following Amazon EC2 pricing models allow customers to use existing server-bound software licenses?
Spot Instances.
Reserved Instances.
Dedicated Hosts.
On-Demand Instances.

A

Dedicated Hosts.

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15
Q

Which Amazon EC2 instance pricing model can provide discounts of up to 90%?
Reserved Instances.
On-Demand.
Dedicated Hosts.
Spot Instances.

A

Spot Instances.

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16
Q

In which scenario should Amazon EC2 Spot Instances be used?
A company wants to move its main website to AWS from an on-premises web server.
A company has a number of application services whose Service Level Agreement (SLA) requires 99.999% uptime.
A company has a number of infrequent, interruptible jobs that are currently using On-Demand Instances.
A company’s heavily used legacy database is currently running on-premises.

A

A company has a number of infrequent, interruptible jobs that are currently using On-Demand Instances.

17
Q

A company is migrating an application that is running non-interruptible workloads for a three-year time frame. Which pricing construct would provide the MOST cost-effective solution?
Amazon EC2 Spot Instances.
Amazon EC2 Dedicated Instances.
Amazon EC2 On-Demand Instances.
Amazon EC2 Reserved Instances.

A

Amazon EC2 Reserved Instances.

18
Q

Which Amazon EC2 pricing model adjusts based on supply and demand of EC2 instances?
On-Demand Instances.
Reserved Instances.
Spot Instances.
Convertible Reserved Instances.

A

Spot Instances.

19
Q

The owner of an E-Commerce application notices that the compute capacity requirements vary heavily from time to time. What makes AWS more economical than traditional data centers for this type of application?
AWS allows customers to launch powerful EC2 instances to handle spikes in load.
AWS allows customers to pay upfront to get bigger discounts.
AWS allows customers to launch and terminate EC2 instances based on demand.
AWS allows customers to choose cheaper types of EC2 instances that best fit their needs.

A

AWS allows customers to launch and terminate EC2 instances based on demand.

20
Q

A company wants to focus on business activities instead of managing compute and capacity. Which AWS service can be used to automatically add or remove Amazon EC2 instances based on demand?
Elastic Load Balancer.
Amazon EC2 Auto Scaling.
Amazon Route 53.
Amazon CloudFront.

A

Amazon EC2 Auto Scaling.

21
Q

You have set up consolidated billing for several AWS accounts. One of the accounts has purchased a number of reserved instances for 3 years. Which of the following is true regarding this scenario?
The Reserved Instance discounts can only be shared with the master account.
All accounts can receive the hourly cost benefit of the Reserved Instances.
The purchased instances will have better performance than On-demand instances.
There are no cost benefits from using consolidated billing; It is for informational purposes only.

A

All accounts can receive the hourly cost benefit of the Reserved Instances.

22
Q

An organization has decided to purchase an Amazon EC2 Reserved Instance (RI) for three years in order to reduce costs. It is possible that the application workloads could change during the reservation period. What is the EC2 Reserved Instance (RI) type that will allow the company to exchange the purchased reserved instance for another reserved instance with higher computing power if they need to?
Elastic RI.
Premium RI.
Standard RI.
Convertible RI.

A

Convertible RI.

23
Q

Which of the following EC2 instance purchasing options supports the Bring Your Own License (BYOL) model for almost every BYOL scenario?
Dedicated Instances.
Dedicated Hosts.
On-demand Instances.
Reserved Instances.

A

Dedicated Hosts.

24
Q

What is one benefit and one drawback of buying a reserved EC2 instance? (Select TWO)
Instances can be shut down by AWS at any time with no notification.
Reserved instances require at least a one-year pricing commitment.
There is no additional charge for using dedicated instances.
Reserved instances provide a significant discount compared to on-demand instances.
[ ]Reserved instances are best suited for periodic workloads.

A

Reserved instances require at least a one-year pricing commitment.
Reserved instances provide a significant discount compared to on-demand instances.

25
Q

How can AWS customers track and avoid over-spending on underutilized reserved instances?
Customers can add all AWS accounts to an AWS Organization, enable Consolidated Billing, and turn off Reserved Instance sharing.
Customers can use Amazon Neptune to track and analyze their usage patterns, detect underutilized reserved instances, and then sell them on the Amazon EC2 Reserved Instance Marketplace.
Customers can use the AWS Budgets service to track the reserved instances usage and set up alert notifications when their utilization drops below the threshold that they define.
Customers can use Amazon CloudTrail to automatically check for unused reservations and get recommendations to reduce their bill.

A

Customers can use the AWS Budgets service to track the reserved instances usage and set up alert notifications when their utilization drops below the threshold that they define.

26
Q

You decide to buy a reserved instance for a term of one year. Which option provides the largest total discount?
All up-front reservation.
All reserved instance payment options provide the same discount level.
Partial up-front reservation.
No up-front reservation.

A

All up-front reservation.

27
Q

Which of the following are valid Amazon EC2 Reserved Instance types? (Choose TWO)
Convertible.
Expedited.
Bulk.
Spot.
Standard.

A

Convertible.
Standard.

28
Q

Which of the following Reserved Instance (RI) pricing models provides the highest average savings compared to On-Demand pricing?
One-year, No Upfront, Standard RI pricing.
One-year, All Upfront, Convertible RI pricing.
Three-year, All Upfront, Standard RI pricing.
Three-year, No Upfront, Convertible RI pricing.

A

Three-year, All Upfront, Standard RI pricing.

29
Q

Which Amazon EC2 pricing model offers the MOST significant discount when compared to OnDemand Instances?
A Partial Upfront Reserved Instances for a 1-year term.
All Upfront Reserved instances for a 1 year form.
All Upfront Reserved Instances for a 3 year term.
No Upfront Reserved Instances for a 3 year term

A

All Upfront Reserved Instances for a 3 year term.

30
Q

Which of the Reserved Instance (RI) pricing models can change the attributes of the RI as long as the exchange results in the creation of RIs of equal or greater value?
Dedicated RIs.
Scheduled RIs.
Convertible RIs.
Standard RIs.

A

Convertible RIs.

31
Q

When performing a cost analysis that supports physical isolation of a customer workload, which compute hosting model should be accounted for in the Total Cost of Ownership (TCO)?
Dedicated Hosts
Reserved Instances
On-Demand Instances
No Upfront Reserved Instances

A

Dedicated Hosts

32
Q

How can one AWS account use Reserved Instances from another AWS account?
By using Amazon EC2 Dedicated Instances.
By using AWS Organizations consolidated billing.
By using the AWS Cost Explorer tool.
By using AWS Budgets.

A
33
Q

Which of the following is an available option when purchasing Amazon EC2 instances?
The ability to bid to get the lowest possible prices.
The ability to register EC2 instances to get volume discounts on every hour the instances are running.
The ability to buy Dedicated Instances for up to 90% discount.
The ability to pay upfront to get lower hourly costs.

A

The ability to pay upfront to get lower hourly costs.

34
Q

How can one AWS account use Reserved Instances from another AWS account?
By using Amazon EC2 Dedicated Instances.
By using AWS Organizations consolidated billing.
By using the AWS Cost Explorer tool.
By using AWS Budgets.

A

By using AWS Organizations consolidated billing

AWS (15 decks)

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