ANS-C01 Network Implementation Practice Question
A company is deploying a web application across multiple Availability Zones in a VPC. The application tier consists of EC2 instances behind an Application Load Balancer (ALB). The security team requires that all traffic between the ALB and the EC2 instances be encrypted. Which solution meets this requirement?
⚠ Common exam trap
It's easy for candidates to assume a TCP listener can provide encryption by using a security group, but security groups do not encrypt traffic—they only filter based on IP/port, and TCP listeners do not support TLS termination or re-encryption.
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
✓
Use an HTTPS listener on the ALB with a target group that uses HTTPS.
To encrypt traffic between the Application Load Balancer (ALB) and the EC2 instances, the ALB must use an HTTPS listener and the target group must be configured with the HTTPS protocol. This ensures that the ALB terminates the client’s HTTPS connection and then re-encrypts traffic to the backend instances using TLS, meeting the security team’s requirement for end-to-end encryption.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use an internal ALB with a TCP listener and a security group that allows only HTTPS.
Why it's wrong here
Security groups do not encrypt traffic.
- ✗
Use an HTTP listener on the ALB and enable encryption on the security group.
Why it's wrong here
Security groups do not provide encryption.
- ✓
Use an HTTPS listener on the ALB with a target group that uses HTTPS.
Why this is correct
HTTPS provides end-to-end encryption.
- ✗
Use a TCP listener on the ALB with a target group that uses TCP.
Why it's wrong here
TCP does not provide encryption.
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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.