20+ practice questions focused on Implementing a Virtual Private Cloud — one of the most tested topics on the Google Professional Cloud Network Engineer exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Implementing a Virtual Private Cloud PracticeAn organization has a VPC with custom mode subnets in us-central1 and europe-west1. They create a VM instance in us-central1 with an internal IP 10.0.1.2 and a VM in europe-west1 with internal IP 10.0.2.2. They want to enable communication between these instances using internal IPs. What must be configured?
Explanation: VPC firewall rules are stateful and must allow ingress traffic from the source subnet (10.0.1.0/24) or the specific source instance (10.0.1.2) to the destination VM in europe-west1. In a custom VPC, there are no default firewall rules that automatically allow internal traffic between subnets, even within the same VPC. Therefore, explicit ingress firewall rules are required to permit traffic between subnets in different regions. The rule should specify the source IP range or tag and the destination protocol/port (e.g., ICMP, TCP/22) to enable communication.
A company has a VPC with multiple subnets. They want to restrict traffic between two subnets (Subnet-A and Subnet-B) using VPC firewall rules. Which TWO conditions must be met for a firewall rule to block traffic from Subnet-A to Subnet-B?
Explanation: Ingress firewall rules in Google Cloud VPC do not have a 'destination' field; the destination is implicitly the instances to which the rule applies (via target tags or service accounts). To block traffic from Subnet-A to Subnet-B, you need an ingress rule on Subnet-B with source set to Subnet-A's IP range, action set to 'deny', and it must apply to all instances in Subnet-B (Option C). Additionally, the rule must have a lower priority number (higher priority) than any allow rules that would otherwise permit the traffic (Option E). Options A and D are not required.
A developer needs to allow a VM in subnet A to reach a VM in subnet B in the same VPC. What is the default behavior?
Explanation: Within a VPC, subnets can communicate by default using internal IP addresses. The VPC has an implied firewall rule that allows traffic between all instances using internal IPs, so no additional routes or firewall rules are needed. Therefore, option C is correct. Option A is incorrect because custom routes are not required for internal subnet traffic; the VPC automatically handles routing. Option B is incorrect because the default firewall rule already allows internal traffic. Option D is incorrect because VPC peering is for connecting separate VPCs, not for communication within the same VPC.
An organization uses Shared VPC with multiple service projects. They want to ensure that only certain service projects can use a specific subnet. How can this be achieved?
Explanation: Shared VPC subnet-level IAM allows granting access to specific service projects. Option A is incorrect because secondary IP ranges are used for IP address management, not for controlling project access. Option C is incorrect because network tags are primarily used for firewall rules, not subnet permissions. Option D is incorrect because firewall rules with service accounts control traffic flow, not which service projects can use a subnet.
Which TWO of the following are required to enable Private Google Access for a subnet?
Explanation: To enable Private Google Access, you must enable the setting on the subnet (option B) and have a default route with next-hop internet gateway (option D) for traffic to Google APIs. Option A is incorrect because private services access is for Google managed services like Cloud SQL. Option C is incorrect because Cloud NAT is not required. Option E is incorrect because VPC flow logs are optional.
+15 more Implementing a Virtual Private Cloud questions available
Practice all Implementing a Virtual Private Cloud questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Implementing a Virtual Private Cloud. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Implementing a Virtual Private Cloud questions on the PCNE frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Implementing a Virtual Private Cloud is tested as part of the Google Professional Cloud Network Engineer blueprint. Practicing with targeted Implementing a Virtual Private Cloud questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free PCNE practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but Implementing a Virtual Private Cloud is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
Launch a full Implementing a Virtual Private Cloud practice session with instant scoring and detailed explanations.
Start Implementing a Virtual Private Cloud Practice →