Serverless vs container decision in AWS - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a serverless function using AWS Lambda.

AWS

resource "aws_lambda_function" "example" {
  function_name = "my_lambda_function"
  runtime       = "python3.9"
  handler       = "handler.[1]"
  role          = aws_iam_role.lambda_exec.arn
  filename      = "lambda_function.zip"
}

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

Amain

Blambda_handler

Capp

Dindex

Attempts:

3 left

💡 Hint

Common Mistakes

Using a handler name that does not exist in the code.

Confusing the handler with the filename.

The handler specifies the function AWS Lambda calls to start execution. The default in Python is often lambda_handler.

2fill in blank

medium

Complete the code to define a container task in AWS ECS.

AWS

resource "aws_ecs_task_definition" "example" {
  family                   = "my_task"
  network_mode             = "awsvpc"
  requires_compatibilities = ["FARGATE"]
  cpu                      = "256"
  memory                   = "512"
  container_definitions    = jsonencode([
    {
      name      = "my_container",
      image     = "nginx:latest",
      essential = true,
      portMappings = [
        {
          containerPort = [1],
          hostPort      = 80,
          protocol      = "tcp"
        }
      ]
    }
  ])
}

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A80

B22

C8080

D443

Attempts:

3 left

💡 Hint

Common Mistakes

Setting containerPort to a port not used by the container.

Confusing hostPort and containerPort.

The container port should match the port the container listens on. For nginx, the default is port 80.

3fill in blank

hard

Fix the error in the serverless function timeout setting.

AWS

resource "aws_lambda_function" "example" {
  function_name = "my_lambda_function"
  runtime       = "python3.9"
  handler       = "handler.lambda_handler"
  role          = aws_iam_role.lambda_exec.arn
  filename      = "lambda_function.zip"
  timeout       = [1]
}

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

A1000

B0

C900

D15

Attempts:

3 left

💡 Hint

Common Mistakes

Setting timeout to zero disables the function.

Using a timeout value greater than 900 seconds.

AWS Lambda timeout maximum is 900 seconds (15 minutes). Setting timeout to 1000 or 0 causes errors.

4fill in blank

hard

Fill both blanks to configure an ECS service with desired count and launch type.

AWS

resource "aws_ecs_service" "example" {
  name            = "my_service"
  cluster         = aws_ecs_cluster.example.id
  task_definition = aws_ecs_task_definition.example.arn
  desired_count   = [1]
  launch_type     = "[2]"
}

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A2

B1

CFARGATE

DEC2

Attempts:

3 left

💡 Hint

Common Mistakes

Using EC2 launch type without EC2 instances.

Setting desired_count to zero disables the service.

The desired_count sets how many tasks run. Launch_type 'FARGATE' runs containers serverlessly without managing EC2 instances.

5fill in blank

hard

Fill all three blanks to create a serverless API Gateway integration with Lambda.

AWS

resource "aws_api_gateway_integration" "example" {
  rest_api_id             = aws_api_gateway_rest_api.example.id
  resource_id             = aws_api_gateway_resource.example.id
  http_method             = aws_api_gateway_method.example.http_method
  integration_http_method = "[1]"
  type                    = "[2]"
  uri                     = aws_lambda_function.example.[3]
}

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

APOST

BAWS_PROXY

Cinvoke_arn

DGET

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect HTTP method for integration.

Confusing Lambda ARN property names.

API Gateway integration with Lambda uses HTTP method POST, type AWS_PROXY, and the Lambda function's invoke_arn.