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Google ACE Practice Question: Order the steps to set up a VPC network with a…
Order the steps to set up a VPC network with a subnet, firewall rule allowing SSH, and a Compute Engine instance in that subnet.
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
✓
Create VPC network and subnet first, then create firewall rule allowing SSH, then create Compute Engine instance in the subnet.
The correct sequence is to first create the VPC network and subnet, then create the firewall rule allowing SSH, and finally create the Compute Engine instance. This ensures that the network infrastructure is ready before the instance is launched, and SSH access is available immediately.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Create VPC network and subnet first, then create firewall rule allowing SSH, then create Compute Engine instance in the subnet.
Why this is correct
This is the correct order because the VPC and subnet must exist before you can create an instance in that subnet. The firewall rule must also be in place before creating the instance to ensure SSH access is allowed from the start.
- ✗
Create VPC network and subnet first, then create Compute Engine instance, then create firewall rule allowing SSH.
Why it's wrong here
This is incorrect because the instance is created before the firewall rule that allows SSH access. The instance would be unreachable via SSH until the firewall rule is created, and some configurations might fail if the firewall rule is missing during instance creation.
- ✗
Create firewall rule allowing SSH first, then create VPC network and subnet, then create Compute Engine instance.
Why it's wrong here
Firewall rules in Google Cloud are scoped to a specific VPC network; the network field is a required parameter when creating a rule. Since the VPC network does not yet exist, there is no network to attach the rule to, so the API call would fail with a resource-not-found error. Even if the rule could be created, it would not apply to any network, and the subsequent instance creation would still lack the SSH ingress rule at boot time. Thus, the VPC must be provisioned before any firewall rule can be created.
- ✗
Create VPC network and subnet first, then create Compute Engine instance in the default subnet, then create a firewall rule allowing SSH for that subnet.
Why it's wrong here
This is incorrect because the instance is created in a subnet (default) that may not be the intended subnet, and the firewall rule is created after the instance. The instance should be in the specified subnet, and the firewall rule should be created before the instance to ensure SSH access from the beginning.
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Google Compute Engine
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.
Key term
VPC network
A Virtual Private Cloud (VPC) network is a logically isolated section of a public cloud provider's infrastructure where you can launch cloud resources in a virtual network that you define and control.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ACE practice question is part of Courseiva's free Google Cloud 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 ACE exam.