Match each AWS security feature to its description.
Drag a concept onto its matching description — or click a concept then click the description.
Stateful firewall that controls inbound and outbound traffic at instance level
Stateless firewall that controls traffic at subnet level
Web application firewall that protects against common web exploits
Managed DDoS protection service with enhanced detection and mitigation
Managed firewall service that provides stateful inspection for VPC traffic
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Security Groups: Acts as a virtual firewall for an EC2 instance at the instance level, controlling inbound and outbound traffic.
These are core security services for network protection. Security Groups are instance-level, NACLs are subnet-level, WAF protects web apps, and Shield provides DDoS protection.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Security Groups: Acts as a virtual firewall for an EC2 instance at the instance level, controlling inbound and outbound traffic.
Why this is correct
Security Groups are stateful firewalls that operate at the instance level.
Network ACLs: Acts as a firewall for a VPC subnet, controlling inbound and outbound traffic at the subnet level.
Why this is correct
Network ACLs are stateless firewalls operating at the subnet level.
AWS WAF: A web application firewall that helps protect web applications from common web exploits.
Why this is correct
AWS WAF filters and monitors HTTP/HTTPS requests to protect web apps.
AWS Shield: A managed DDoS protection service that safeguards applications running on AWS.
Why this is correct
AWS Shield provides automatic DDoS mitigation for AWS resources.
Security Groups: Acts as a firewall at the subnet level.
Why it's wrong here
Incorrect — Security Groups operate at the instance level, not subnet. This describes Network ACLs.
Network ACLs: Acts as a virtual firewall for an EC2 instance.
Why it's wrong here
Incorrect — Network ACLs operate at the subnet level, not instance. This describes Security Groups.
Visual reference
Go deeper
About these practice questions
This ANS-C01 question is part of Courseiva's 1,621-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.