What is cloud computing in AWS - Interactive Quiz & Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a virtual server in the cloud using AWS EC2.

AWS

ec2 = boto3.resource('ec2')
instance = ec2.create_instances(ImageId='ami-0abcdef1234567890', MinCount=1, MaxCount=1, InstanceType='[1]')

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

At2.micro

Bm5.large

Cc5.xlarge

Dr5.2xlarge

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing a large instance type unnecessarily increases cost.

Using an invalid instance type string causes errors.

The t2.micro instance type is a common choice for beginners and small workloads in AWS EC2.

2fill in blank

medium

Complete the code to upload a file to AWS S3 bucket.

AWS

s3 = boto3.client('s3')
s3.upload_file('localfile.txt', '[1]', 'remote.txt')

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

Amy-bucket

Bmybucket

Cmy_bucket

Dmy.bucket

Attempts:

3 left

💡 Hint

Common Mistakes

Using underscores in bucket names causes errors.

Using dots incorrectly in bucket names is invalid.

Bucket names in AWS S3 must be DNS-compliant. my-bucket is valid with hyphens.

3fill in blank

hard

Fix the error in the code to launch an EC2 instance with a key pair.

AWS

ec2 = boto3.resource('ec2')
instance = ec2.create_instances(ImageId='ami-0abcdef1234567890', MinCount=1, MaxCount=1, KeyName='[1]')

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

Amy keypair

Bmy_keypair

Cmy-keypair

Dmy.keypair

Attempts:

3 left

💡 Hint

Common Mistakes

Using spaces in key pair names causes errors.

Using dots in key pair names is invalid.

Key pair names in AWS cannot contain spaces or dots. my-keypair is valid.

4fill in blank

hard

Fill both blanks to define an AWS Lambda function with correct runtime and handler.

AWS

lambda_client.create_function(FunctionName='MyFunction', Runtime='[1]', Handler='[2]', Role='arn:aws:iam::123456789012:role/lambda-role', Code={'ZipFile': b'function code bytes'})

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

Apython3.9

Bindex.handler

Capp.lambda_handler

Dnodejs14.x

Attempts:

3 left

💡 Hint

Common Mistakes

Mismatching runtime and handler causes deployment errors.

Using wrong handler format causes function invocation failures.

The runtime python3.9 matches the handler app.lambda_handler for Python Lambda functions.

5fill in blank

hard

Fill all three blanks to create an AWS IAM policy statement allowing S3 read access.

AWS

{
  'Effect': '[1]',
  'Action': '[2]',
  'Resource': '[3]'
}

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

AAllow

BDeny

Cs3:GetObject

Darn:aws:s3:::example-bucket/*

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Deny' instead of 'Allow' blocks access.

Incorrect action or resource ARN causes permission errors.

The policy Allows the s3:GetObject action on the specified bucket resource.

Practice

1. What is the main benefit of cloud computing compared to owning physical computers?

easy

A. You can use computing resources over the internet without buying hardware.

B. You get faster internet speeds at home.

C. You have to manage all the physical servers yourself.

D. You pay a fixed monthly fee regardless of usage.

Solution

1. Step 1: Understand cloud computing basics

   Cloud computing means using computers and storage through the internet instead of owning them physically.

2. Step 2: Compare options

   You can use computing resources over the internet without buying hardware. correctly states the main benefit: no need to buy hardware, just use resources online. Other options are incorrect because they mention unrelated or wrong facts.

3. Final Answer:

   You can use computing resources over the internet without buying hardware. -> Option A

4. Quick Check:

   Cloud computing = use internet resources [OK]

Hint: Cloud means using internet computers, not your own [OK]

Common Mistakes:

• Thinking cloud means faster home internet
• Believing you must manage physical servers
• Assuming fixed cost regardless of use

2. Which of the following is the correct way to describe cloud computing?

easy

A. Renting computing power and storage over the internet.

B. Connecting to a local printer.

C. Using a USB drive to store files.

D. Buying and installing software on your local computer.

Solution

1. Step 1: Define cloud computing

   Cloud computing means renting or using computing resources like servers and storage through the internet.

2. Step 2: Evaluate options

   Renting computing power and storage over the internet. matches this definition. Options A, B, and C describe local or unrelated actions, not cloud computing.

3. Final Answer:

   Renting computing power and storage over the internet. -> Option A

4. Quick Check:

   Cloud = rent internet resources [OK]

Hint: Cloud means renting, not buying software locally [OK]

Common Mistakes:

• Confusing cloud with local software installation
• Thinking cloud is just external storage devices
• Mixing cloud with local hardware connections

3. If a company uses cloud computing, what happens when they need more storage suddenly?

medium

A. They must buy new physical hard drives and install them.

B. They can quickly add more storage online without delay.

C. They have to wait weeks for new hardware delivery.

D. They lose all their existing data.

Solution

1. Step 1: Understand cloud flexibility

   Cloud computing allows users to increase or decrease resources like storage instantly through the internet.

2. Step 2: Analyze options

   They can quickly add more storage online without delay. correctly states this quick scalability. Options A and B describe physical hardware delays, and D is incorrect as data is not lost.

3. Final Answer:

   They can quickly add more storage online without delay. -> Option B

4. Quick Check:

   Cloud scales storage fast = They can quickly add more storage online without delay. [OK]

Hint: Cloud scales resources instantly online [OK]

Common Mistakes:

• Assuming physical hardware is needed for scaling
• Thinking scaling takes weeks
• Believing data is lost when scaling

4. A user tries to access cloud storage but gets an error. Which is the most likely cause?

medium

A. The cloud storage is a physical device unplugged.

B. The cloud provider deleted all data automatically.

C. The user's computer is turned off.

D. The user's internet connection is down.

Solution

1. Step 1: Identify cloud access requirements

   Accessing cloud storage requires a working internet connection.

2. Step 2: Evaluate error causes

   The user's internet connection is down. is the most common cause: no internet means no cloud access. Options B, C, and D are unlikely or incorrect because cloud data is not deleted automatically, and cloud storage is not a physical device on the user's side.

3. Final Answer:

   The user's internet connection is down. -> Option D

4. Quick Check:

   No internet = no cloud access [OK]

Hint: Check internet first if cloud access fails [OK]

Common Mistakes:

• Assuming cloud deletes data randomly
• Thinking local computer state affects cloud data
• Confusing cloud storage with local devices

5. A startup wants to save money by using cloud computing. Which approach best fits this goal?

hard

A. Buy many servers upfront to avoid monthly fees.

B. Hire staff to manage physical data centers.

C. Use cloud services and pay only for what they use.

D. Avoid cloud and use only local computers.

Solution

1. Step 1: Understand cloud cost model

   Cloud computing charges based on actual usage, so you pay only for what you use, saving money especially for startups.

2. Step 2: Compare options for cost saving

   Use cloud services and pay only for what they use. matches this pay-as-you-go model. Options A, C, and D involve high upfront costs or management overhead, not cost-saving.

3. Final Answer:

   Use cloud services and pay only for what they use. -> Option C

4. Quick Check:

   Cloud pay-per-use = cost saving [OK]

Hint: Cloud pay-as-you-go saves money for startups [OK]

Common Mistakes:

• Thinking buying servers upfront is cheaper
• Ignoring management costs of physical data centers
• Avoiding cloud due to misunderstanding costs