Application Load Balancer (ALB) in AWS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the protocol for the ALB listener.

AWS

listener = alb.add_listener("Listener", protocol=[1], port=80)

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

A"FTP"

B"HTTP"

C"SMTP"

D"SSH"

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing unsupported protocols like FTP or SSH for the listener.

The Application Load Balancer listener must use the HTTP or HTTPS protocol. Here, HTTP is correct.

2fill in blank

medium

Complete the code to define the target group protocol for the ALB.

AWS

target_group = alb.add_target_group("TargetGroup", protocol=[1], port=8080)

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

A"HTTP"

B"TCP"

C"UDP"

D"ICMP"

Attempts:

3 left

💡 Hint

Common Mistakes

Using TCP or UDP protocols for ALB target groups.

ALB target groups use HTTP or HTTPS protocols. TCP and UDP are for Network Load Balancers.

3fill in blank

hard

Fix the error in the listener rule condition to match the path pattern.

AWS

listener.add_rule(priority=10, conditions=[[1]], action=forward_action)

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AListenerCondition.http_headers(["User-Agent"])

BListenerCondition.host_headers(["example.com"])

CListenerCondition.path_patterns(["/images/*"])

DListenerCondition.query_strings(["id"])

Attempts:

3 left

💡 Hint

Common Mistakes

Using host_headers or query_strings when path_patterns is required.

To match URL paths, use path_patterns condition. Host headers or query strings are different conditions.

4fill in blank

hard

Fill both blanks to configure health check settings for the ALB target group.

AWS

target_group.configure_health_check(path=[1], interval=Duration.seconds([2]))

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A"/health"

B30

C5

D"/status"

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect paths or too short intervals causing frequent checks.

The health check path is usually a specific endpoint like /health, and the interval is commonly set to 30 seconds.

5fill in blank

hard

Fill all three blanks to create a listener rule with priority, condition, and action.

AWS

listener.add_rule(priority=[1], conditions=[[2]], action=[3])

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

A10

BListenerCondition.path_patterns(["/api/*"])

CListenerAction.forward(target_group)

DListenerCondition.host_headers(["api.example.com"])

Attempts:

3 left

💡 Hint

Common Mistakes

Using host_headers instead of path_patterns for API path matching.

Omitting priority or using invalid action.

Priority must be a number like 10. The condition matches paths starting with /api/, and the action forwards to the target group.