EC2 pricing models (on-demand, reserved, spot) in AWS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the EC2 pricing model for an on-demand instance.

AWS

ec2_client.run_instances(InstanceType='t2.micro', MinCount=1, MaxCount=1, [1]={'MarketType':'on-demand'})

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AInstanceMarketOptions

BMarketType

CInstanceLifecycle

DPricingModel

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'PricingModel' which is not a valid parameter.

Using 'InstanceLifecycle' which is not an input parameter for run_instances.

The InstanceMarketOptions parameter is used to specify the pricing model such as {'MarketType':'on-demand'} or {'MarketType':'spot'} when launching an EC2 instance.

2fill in blank

medium

Complete the code to request a spot instance using the correct market option.

AWS

ec2_client.run_instances(InstanceType='t3.medium', MinCount=1, MaxCount=1, InstanceMarketOptions={'MarketType': [1])

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A'on-demand'

B'reserved'

C'spot'

D'scheduled'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'reserved' or 'on-demand' which are different pricing models.

To request a spot instance, the MarketType must be set to 'spot' in the InstanceMarketOptions.

3fill in blank

hard

Fix the error in the code to correctly specify a reserved instance purchase option.

AWS

ec2_client.purchase_reserved_instances_offering(ReservedInstancesOfferingId='abc123', [1]=1)

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AQuantity

BInstanceNumber

CCount

DInstanceCount

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Count' or 'InstanceCount' which are invalid for this API call.

The correct parameter to specify the number of reserved instances to purchase is Quantity.

4fill in blank

hard

Fill both blanks to configure a spot instance with a maximum price and interruption behavior.

AWS

ec2_client.run_instances(InstanceType='t3.large', MinCount=1, MaxCount=1, InstanceMarketOptions={'MarketType':'spot', 'SpotOptions':{'MaxPrice': [1], '[2]':'terminate'}})

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A'0.05'

B'MaxPrice'

C'InstanceInterruptionBehavior'

D'0.5'

Attempts:

3 left

💡 Hint

Common Mistakes

Using numeric types instead of strings for MaxPrice.

Confusing 'MaxPrice' with interruption behavior.

The MaxPrice in SpotOptions sets the max price you are willing to pay, and InstanceInterruptionBehavior defines what happens when the spot instance is interrupted.

5fill in blank

hard

Fill all three blanks to create a dictionary that maps instance types to their pricing models.

AWS

pricing_map = [1](instance_type: [2] for instance_type, [3] in instances.items())

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Adict

B'on-demand'

Cpricing_model

D'spot'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'spot' instead of 'on-demand' for the pricing model.

Using wrong variable names in the comprehension.

This dictionary comprehension creates a dict mapping each instance type to the string 'on-demand' using the variable pricing_model for the value.