ALB vs NLB decision in AWS - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to select the load balancer type for HTTP traffic.

AWS

load_balancer = aws_lb("myLB", load_balancer_type=[1])

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

A"network"

B"gateway"

C"classic"

D"application"

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'network' which is for TCP/UDP traffic, not HTTP.

Using 'classic' which is older and less flexible.

For HTTP traffic, an Application Load Balancer (ALB) is the best choice because it works at the application layer.

2fill in blank

medium

Complete the code to select the load balancer type for TCP traffic with high performance.

AWS

load_balancer = aws_lb("myLB", load_balancer_type=[1])

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

A"application"

B"network"

C"classic"

D"gateway"

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'application' which is for HTTP/HTTPS, not raw TCP.

Using 'classic' which is outdated.

Network Load Balancer (NLB) is designed for TCP traffic and provides high performance and low latency.

3fill in blank

hard

Fix the error in the code to create a listener for an ALB on port 80.

AWS

listener = aws_lb_listener("myListener", load_balancer_arn=alb.arn, port=[1], protocol="HTTP")

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

A80

B22

C443

D8080

Attempts:

3 left

💡 Hint

Common Mistakes

Using port 443 which is for HTTPS.

Using port 22 which is for SSH.

Port 80 is the standard port for HTTP traffic on an Application Load Balancer.

4fill in blank

hard

Fill both blanks to configure a health check for an NLB on TCP port 443.

AWS

health_check = aws_lb_target_group_health_check(protocol=[1], port=[2])

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

A"TCP"

B"HTTP"

C"443"

D"80"

Attempts:

3 left

💡 Hint

Common Mistakes

Using HTTP protocol for NLB health checks.

Using port 80 instead of 443.

NLB health checks use TCP protocol on the port where the service listens, here port 443.

5fill in blank

hard

Fill all three blanks to create an ALB listener rule that forwards requests with path '/app' to a target group.

AWS

rule = aws_lb_listener_rule("myRule", listener_arn=listener.arn, priority=10, action=[1], condition=[2], target_group_arn=[3])

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

A{"type": "forward"}

B{"field": "path-pattern", "values": ["/app"]}

Ctarget_group.arn

D{"type": "redirect"}

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'redirect' action instead of 'forward'.

Using wrong path pattern in condition.

Not specifying the target group ARN.

The action must be 'forward' to send traffic to the target group. The condition matches the path '/app'. The target group ARN specifies where to send the traffic.