Why serverless architecture matters in AWS - Challenge Your Understanding

Challenge - 5 Problems

🧠 Conceptual

intermediate

Benefits of Serverless Architecture

Which of the following is the primary benefit of using serverless architecture in cloud computing?

A You manage the underlying servers and operating systems directly.

B It requires you to handle server patching and maintenance.

C You must provision fixed server capacity in advance.

D It automatically scales with demand without manual intervention.

💡 Hint

Think about how serverless handles changes in workload automatically.

Serverless architecture automatically adjusts resources based on demand, so you don't have to manage servers or capacity.

❓ Architecture

intermediate

Serverless Event Trigger

In AWS serverless architecture, which service is commonly used to trigger a Lambda function when a new file is uploaded to a storage bucket?

A Amazon S3 Event Notifications

B Amazon EC2

C AWS CloudTrail

D Amazon RDS

💡 Hint

Consider which service handles storage and can notify other services on changes.

Amazon S3 can send event notifications to trigger Lambda functions when files are uploaded.

❓ security

advanced

Serverless Security Best Practice

Which security practice is most important when deploying serverless functions to minimize risk?

A Embedding sensitive credentials directly in function code.

B Using least privilege by assigning minimal permissions needed.

C Granting broad permissions to Lambda functions for easy access.

D Disabling logging to avoid exposing data.

💡 Hint

Think about limiting access to only what is necessary.

Assigning minimal permissions reduces the risk if a function is compromised.

❓ service_behavior

advanced

Serverless Cold Start Impact

What is the main impact of a cold start in serverless functions like AWS Lambda?

A Function experiences a delay when starting due to initialization.

B Function runs faster because it uses cached resources.

C Function automatically scales down to zero memory usage.

D Function permanently stays warm to avoid delays.

💡 Hint

Consider what happens when a function runs for the first time or after inactivity.

Cold start causes a delay because the environment must initialize before running the function.

✅ Best Practice

expert

Optimizing Cost in Serverless Architecture

Which approach best helps optimize cost when using serverless functions in AWS?

A Keeping functions running continuously to avoid cold starts.

B Allocating more memory than needed to reduce execution time.

C Monitoring and adjusting function memory and timeout based on usage.

D Setting function timeout to the maximum allowed value.

💡 Hint

Think about balancing resource allocation with actual function needs.

Adjusting memory and timeout based on real usage helps reduce cost by avoiding over-provisioning.