Google PCA Manage implementation of cloud architecture Practice Question
Which TWO statements about Google Cloud VPC firewall rules are correct? (Choose two.)
⚠ Common exam trap
Google Cloud often tests the misconception that firewall rules are stateless or that the default VPC blocks all ingress, when in fact Google Cloud VPC rules are stateful and the default VPC allows specific ingress traffic (ICMP, RDP, SSH) from any source.
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
✓
Firewall rules allow you to specify both source and destination IP ranges.
Google Cloud VPC firewall rules are stateful and allow you to specify both source and destination IP ranges in a single rule. This enables granular control over traffic direction, such as allowing ingress from a specific source CIDR to a specific destination CIDR within the VPC.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Firewall rules are stateless and require explicit rules for return traffic.
Why it's wrong here
Rules are stateful.
- ✓
Firewall rules allow you to specify both source and destination IP ranges.
Why this is correct
Rules can have source and destination filters.
- ✗
Default VPC has firewall rules that block all ingress traffic.
Why it's wrong here
Default VPC allows ICMP, RDP, SSH ingress from anywhere.
- ✗
Firewall rules cannot be applied to instances by service account.
Why it's wrong here
They can use target service accounts.
- ✓
Hierarchical firewall policies can be applied to the organization, folder, or project level.
Why this is correct
Yes, they are evaluated before VPC firewall rules.
Visual reference
Go deeper
Related to this question
Learn chapter
Introduction to Google Cloud Platform
Key term
Ingress
Ingress is a Kubernetes API object that manages external access to services within a cluster, typically via HTTP or HTTPS routing rules.
Key term
Firewall
A firewall is a network security system that monitors and controls incoming and outgoing traffic based on predetermined security rules to protect trusted internal networks from untrusted external networks.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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