CCSP Cloud Platform and Infrastructure Security Practice Question
In a cloud VPC design, which component acts as a stateful firewall at the instance level, allowing only inbound rules?
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
✓
Security group
Security groups are stateful firewalls that control traffic to instances; they only support allow rules and are stateful.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Security group
Why this is correct
Security groups are instance-level stateful firewalls.
- ✗
Network ACL (NACL)
Why it's wrong here
NACLs are stateless and apply at subnet level.
- ✗
Internet gateway
Why it's wrong here
Internet gateway allows VPC to internet, not a firewall.
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Route table
Why it's wrong here
Route tables direct traffic, not filter.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CCSP practice question is part of Courseiva's free ISC2 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 CCSP exam.