ANS-C01 Network Implementation Practice Question
Which TWO of the following are best practices for securing a VPC with AWS Network Firewall? (Choose two.)
⚠ Common exam trap
Many candidates assume stateless rules are sufficient for security or that Network Firewall is only for outbound filtering, but the exam tests the understanding that stateful inspection and multi-AZ deployment are critical for comprehensive protection and high availability.
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
✓
Deploy firewall endpoints in at least two Availability Zones for high availability.
Deploying AWS Network Firewall endpoints in at least two Availability Zones ensures high availability and fault tolerance. If one AZ or firewall endpoint fails, traffic can be routed through the other, preventing a single point of failure. This aligns with AWS best practices for resilient network architectures.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Deploy firewall endpoints in at least two Availability Zones for high availability.
Why this is correct
Ensures resilience.
- ✗
Use only stateless rules to minimize processing overhead.
Why it's wrong here
Stateful rules are needed for application inspection.
- ✓
Configure stateful rule groups to inspect traffic at the application layer.
Why this is correct
Provides deep packet inspection.
- ✗
Use Network Firewall only for outbound traffic filtering.
Why it's wrong here
It can filter both inbound and outbound.
- ✗
Deploy the firewall in the same subnet as the workload for low latency.
Why it's wrong here
Dedicated subnet is recommended.
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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.