ANS-C01 Network Implementation Practice Question
A company is deploying a multi-tier web application on AWS. The application uses an Application Load Balancer (ALB) to distribute traffic to EC2 instances in private subnets across multiple Availability Zones. The security team requires that all traffic between the ALB and the EC2 instances be encrypted using TLS. The application must also support HTTP health checks from the ALB. Which TWO actions should the network engineer take to meet these requirements? (Choose TWO.)
⚠ Common exam trap
It's easy for candidates to assume setting the ALB listener to HTTPS is sufficient for end-to-end encryption, overlooking that the target group protocol must also be HTTPS to encrypt the ALB-to-instance traffic.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Install a certificate on each EC2 instance and configure the target group to use HTTPS.
Installing a certificate on each EC2 instance and configuring the target group to use HTTPS ensures that traffic between the ALB and the EC2 instances is encrypted using TLS. This meets the security requirement for end-to-end encryption, as the ALB will establish a TLS connection with the instances using the installed certificate.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure the ALB listener to use HTTP and enable stickiness.
Why it's wrong here
ALB listener should use HTTPS for encrypted traffic; stickiness is not required.
- ✓
Install a certificate on each EC2 instance and configure the target group to use HTTPS.
Why this is correct
Installing a certificate on instances allows TLS termination, and HTTPS target group ensures encrypted health checks.
- ✗
Configure the ALB listener to use HTTPS and set the target group protocol to HTTP.
Why it's wrong here
Setting target group to HTTP would send unencrypted traffic to instances.
- ✓
Configure the target group health check to use HTTPS.
Why this is correct
HTTPS health checks ensure health checks are encrypted.
- ✗
Configure the security group for EC2 instances to allow inbound HTTP traffic from the ALB.
Why it's wrong here
Security group should allow HTTPS (port 443) from the ALB, not HTTP.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ANS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ANS-C01 exam.