PCNE Implementing VPC Instances Practice Question
A company uses hierarchical firewall policies at the organization level. They need to allow SSH (TCP 22) access from a specific range 10.0.0.0/8 to all VMs, but a child folder has a policy that denies all ingress traffic. Which rule priority ordering ensures SSH access is allowed?
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
✓
Organization allow rule priority 100, folder deny rule priority 200.
Hierarchical firewall rules have priorities; higher priority (lower number) wins. To override a deny-all, the allow rule must have a lower priority number than the deny rule. The organization policy can have a lower priority than the folder policy, but the folder's deny-all would block. The organization's allow rule must have higher priority (lower number) than the folder's deny rule.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Folder allow rule priority 100, folder deny rule priority 200.
Why it's wrong here
This is correct only if the allow is at folder level, but the scenario says organization allow.
- ✗
Remove the folder deny rule and use network firewall rules.
Why it's wrong here
The scenario requires hierarchical policies; removing is not the only solution.
- ✗
Organization allow rule priority 200, folder deny rule priority 100.
Why it's wrong here
Folder deny with priority 100 overrides the allow.
- ✓
Organization allow rule priority 100, folder deny rule priority 200.
Why this is correct
Priority 100 is higher (lower number) than 200, so allow overrides deny.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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