Practice Test

True/False: AWS Fargate is a serverless compute engine for containers.

  • True
  • False

Answer: True

Explanation: AWS Fargate is indeed a serverless compute engine for containers. It works with both Amazon Elastic Container Service (ECS) and Amazon Elastic Kubernetes Service (EKS).

Single Select: Which AWS service is used for building serverless applications?

  • A. AWS Fargate
  • B. AWS Lambda
  • C. AWS EC2
  • D. AWS RDS

Answer: B. AWS Lambda

Explanation: AWS Lambda allows you to run your code without provisioning or managing servers.

True/False: You can use AWS Lambda to automatically scale your applications in response to the incoming request traffic.

  • True
  • False

Answer: True

Explanation: AWS Lambda automatically scales applications by running code in response to each trigger. Your application is available for processing traffic as soon as it is required.

Multiple Select: Which of the following services are serverless compute options on AWS?

  • A. AWS Fargate
  • B. AWS Lambda
  • C. AWS S3
  • D. AWS EC2

Answer: A. AWS Fargate, B. AWS Lambda

Explanation: Both AWS Lambda and AWS Fargate are serverless compute options. AWS S3 is a storage service and AWS EC2 is a compute service but not serverless.

True/False: With AWS Fargate, you can only run applications on Amazon ECS.

  • True
  • False

Answer: False

Explanation: AWS Fargate can run applications on both Amazon ECS and Amazon EKS (Elastic Kubernetes Service).

Single Select: What type of architecture does AWS Lambda fit best into?

  • A. Monolithic
  • B. Microservices
  • C. Server
  • D. Client-server

Answer: B. Microservices

Explanation: AWS Lambda fits best into a microservices architecture, as it allows you to break down your application into small, stateless, and independent functions.

Multiple Select: Which of the following benefits are associated with AWS Fargate and AWS Lambda?

  • A. Automatic scaling
  • B. No server management
  • C. Built-in storage
  • D. In-depth access control

Answer: A. Automatic scaling, B. No server management

Explanation: AWS Fargate and AWS Lambda both offer automatic scaling and remove the need to manage servers. However, they do not provide built-in storage and in-depth access control is regulated by other AWS services.

Single Select: Which serverless compute option would be best for an event-driven application?

  • A. AWS Fargate
  • B. AWS Lambda
  • C. AWS EC2
  • D. AWS RDS

Answer: B. AWS Lambda

Explanation: AWS Lambda is an event-driven computing service, making it an excellent choice for event-driven applications.

True/False: AWS Lambda functions have a maximum execution time.

  • True
  • False

Answer: True

Explanation: AWS Lambda functions do have a maximum time limit for execution, which is 15 minutes.

Single select: AWS Fargate eliminates the need to _________.

  • A. Choose server types
  • B. Scale containers
  • C. Provision and manage servers
  • D. Both A and C

Answer: D. Both A and C

Explanation: AWS Fargate removes the need to select server types and provision and manage servers, making it simpler to run containerized applications on AWS.

Interview Questions

What is the primary distinction between AWS Fargate and AWS Lambda?

AWS Lambda executes your code only when needed and scales automatically from a few requests per day to thousands per second. While AWS Fargate is a serverless compute engine for containers that eliminates the need to manage the underlying EC2 instances.

Which AWS service is primarily used for executing background tasks?

AWS Lambda is used primarily for executing background tasks.

When should you use AWS Fargate instead of AWS Lambda?

AWS Fargate is ideal for long-running applications, microservices, backend services, data processing, and batch processing, as these applications require a flexible compute capacity.

Are you billed for idle compute time in AWS Fargate and AWS Lambda?

No, both AWS Lambda and Fargate follow a “pay for what you use” billing method where you’re only billed for the time your code runs.

Is it possible to run containers without managing servers or clusters in AWS?

Yes, AWS Fargate lets you run containers without having to manage servers or clusters.

What is the maximum execution time allowed for AWS Lambda?

AWS Lambda allows a maximum execution time of 15 minutes per request.

What is the primary difference between AWS Fargate and AWS EC2?

The primary difference is that you manage the underlying infrastructure with AWS EC2, while with AWS Fargate, Amazon manages it for you, which makes it a serverless solution.

How does AWS Lambda deal with hardware failure?

AWS Lambda automatically retries failed execution and performs health checks to automatically replace failed instances.

Can you run Docker containers on AWS Lambda?

No, Docker containers cannot be run directly on AWS Lambda. Lambda is designed to run code snippets in response to events.

What integrations does AWS Fargate offer?

AWS Fargate integrates with services like Amazon ECS and EKS, allowing you to manage containers at scale.

What is the storage limit for an AWS Lambda function?

AWS Lambda functions have a maximum storage limit of 512 MB in the /tmp directory.

Can you increase the maximum execution time for AWS Lambda functions?

Yes, you can configure the timeout value for a Lambda function to a maximum of 900 seconds (15 minutes).

Does AWS Fargate support persistent storage?

AWS Fargate does not natively support persistent storage. However, it can be implemented through integrations with services like EFS for persistent storage.

What is the maximum size of a deployment package that I can upload to AWS Lambda?

The total unzipped size of the function and all its layers cannot exceed 250 MB.

Can AWS Lambda function connect to an RDS instance?

Yes, it is possible for AWS Lambda function to connect to an RDS instance. However, the RDS instance should be publicly accessible and you should manage connection pooling to ensure maximum performance.

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