Cross-zone load balancing in AWS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to enable cross-zone load balancing on the AWS Elastic Load Balancer.

AWS

resource "aws_lb" "example" {
  name               = "example-lb"
  internal           = false
  load_balancer_type = "application"
  subnets            = ["subnet-12345678", "subnet-87654321"]

  enable_cross_zone_load_balancing = [1]
}

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

Atrue

Bfalse

C"enabled"

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using string values like "enabled" instead of boolean true.

Setting the value to false disables cross-zone load balancing.

Setting enable_cross_zone_load_balancing to true enables cross-zone load balancing on the AWS load balancer.

2fill in blank

medium

Complete the code to create a target group with cross-zone load balancing enabled on the load balancer.

AWS

resource "aws_lb_target_group" "example_tg" {
  name     = "example-tg"
  port     = 80
  protocol = "HTTP"
  vpc_id   = "vpc-12345678"

  [1] = true
}

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

Across_zone_load_balancing

Bcross_zone_balancing

Ccross_zone_lb

Denable_cross_zone_load_balancing

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect attribute names like 'cross_zone_load_balancing' or 'cross_zone_lb'.

Misspelling the attribute name.

The correct attribute to enable cross-zone load balancing on the target group is enable_cross_zone_load_balancing.

3fill in blank

hard

Fix the error in the code to correctly enable cross-zone load balancing for the AWS Classic Load Balancer.

AWS

resource "aws_elb" "example" {
  name               = "example-classic-lb"
  availability_zones = ["us-west-2a", "us-west-2b"]

  [1] = true
}

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

Across_zone_lb_enabled

Bcross_zone_load_balancing

Cenable_cross_zone_load_balancing

Dcross_zone_balancing

Attempts:

3 left

💡 Hint

Common Mistakes

Using enable_cross_zone_load_balancing which is for ALB/NLB.

Misspelling the attribute name.

For AWS Classic Load Balancer, the attribute to enable cross-zone load balancing is cross_zone_load_balancing.

4fill in blank

hard

Fill both blanks to configure an Application Load Balancer with cross-zone load balancing enabled and access logs turned on.

AWS

resource "aws_lb" "example" {
  name               = "example-alb"
  load_balancer_type = "application"
  subnets            = ["subnet-11111111", "subnet-22222222"]

  [1] = true

  access_logs {
    [2] = "my-log-bucket"
  }
}

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

Aenable_cross_zone_load_balancing

Bbucket

Caccess_log_bucket

Denable_access_logs

Attempts:

3 left

💡 Hint

Common Mistakes

Using access_log_bucket instead of bucket inside access_logs.

Trying to enable access logs with a boolean attribute instead of setting the bucket.

To enable cross-zone load balancing, use enable_cross_zone_load_balancing. For access logs, the bucket name is set with bucket inside the access_logs block.

5fill in blank

hard

Fill all three blanks to create a Network Load Balancer with cross-zone load balancing enabled, health check configured, and a target group attached.

AWS

resource "aws_lb" "nlb" {
  name               = "example-nlb"
  load_balancer_type = "network"
  subnets            = ["subnet-aaaaaaa", "subnet-bbbbbbb"]

  [1] = true
}

resource "aws_lb_target_group" "tg" {
  name     = "example-tg"
  port     = 80
  protocol = "TCP"
  vpc_id   = "vpc-abcdef12"

  health_check {
    [2] = "/"
    [3] = 30
  }
}

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

Aenable_cross_zone_load_balancing

Bpath

Cinterval

Dcross_zone_load_balancing

Attempts:

3 left

💡 Hint

Common Mistakes

Using cross_zone_load_balancing for NLB instead of enable_cross_zone_load_balancing.

Confusing health check attributes names.

For Network Load Balancer, cross-zone load balancing is enabled with enable_cross_zone_load_balancing. Health check path and interval configure the check URL and frequency.