Instance states (running, stopped, terminated) in AWS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if an AWS EC2 instance is currently running.

AWS

if instance.state['Name'] == '[1]':
    print('Instance is running')

Drag options to blanks, or click blank then click option'

Aterminated

Bstopped

Crunning

Dpending

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'stopped' instead of 'running' will check for a stopped instance, not a running one.

Using 'terminated' will check for an instance that is deleted, not active.

The instance state 'running' means the EC2 instance is active and operational.

2fill in blank

medium

Complete the code to stop an AWS EC2 instance using boto3.

AWS

response = ec2_client.stop_instances(InstanceIds=[[1]])

Drag options to blanks, or click blank then click option'

A'i-1234567890abcdef0'

Bi-1234567890abcdef0

C'instance_id'

Dinstance_id

Attempts:

3 left

💡 Hint

Common Mistakes

Not quoting the instance ID string causes a syntax error.

Using a variable name without quotes when a string literal is expected.

The InstanceIds parameter requires a list of strings representing instance IDs. The ID must be a string inside quotes.

3fill in blank

hard

Fix the error in the code that checks if an instance is terminated.

AWS

if instance.state['[1]'] == 'terminated':
    print('Instance is terminated')

Drag options to blanks, or click blank then click option'

Aname

Bstatus

Cstate

DName

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase 'name' causes a KeyError.

Using 'state' or 'status' keys which do not exist in the state dictionary.

The correct key to access the state name in the instance state dictionary is 'Name' with a capital N.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps instance IDs to their states for instances that are running.

AWS

running_instances = {inst['[1]']: inst['state']['[2]'] for inst in instances if inst['state']['Name'] == 'running'}

Drag options to blanks, or click blank then click option'

AInstanceId

BName

CState

DStatus

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase or incorrect keys like 'instanceid' or 'state' causes errors.

Confusing the keys for instance ID and state name.

'InstanceId' is the key for the instance ID, and 'Name' is the key for the state name inside the state dictionary.

5fill in blank

hard

Fill all three blanks to filter instances that are stopped and create a list of their IDs.

AWS

stopped_ids = [inst['[1]'] for inst in instances if inst['state']['[2]'] == '[3]']

Drag options to blanks, or click blank then click option'

AInstanceId

BName

Cstopped

DState

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong keys like 'state' or 'status' instead of 'Name'.

Using 'stopping' or 'terminated' instead of 'stopped' to filter.

We use 'InstanceId' to get the ID, 'Name' to access the state name, and 'stopped' to filter stopped instances.