The answer is to remove the public IP address and enable Secure Boot. Removing the public IP eliminates direct internet exposure to the VM, forcing all administrative access through a bastion host or VPN, which drastically shrinks the network-level attack surface. Enabling Secure Boot ensures that only signed, trusted operating system kernels and bootloaders can run, preventing rootkits and low-level malware from compromising the boot chain. On the Google Professional Cloud Security Engineer exam, this question tests your ability to distinguish between measures that directly reduce exposure versus those that enhance integrity or monitoring—a common trap is selecting vTPM or Integrity Monitoring, which protect against tampering but do not shrink the attack surface. Remember the memory tip: “Public IP off, Secure Boot on” to instantly recall the two actions that directly reduce what an attacker can reach and what they can execute.
PCSE Practice Question: Managing operations in a cloud solution environment
This PCSE practice question tests your understanding of managing operations in a cloud solution environment. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO actions should you take to reduce the attack surface of a Compute Engine VM? (Choose 2.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Remove public IP addresses
Removing public IP and enabling Secure Boot reduce exposure. vTPM and other options do not directly reduce attack surface.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Remove public IP addresses
Why this is correct
Removing public IP eliminates a direct attack vector from the internet.
Related concept
Static NAT maps one inside address to one outside address.
✓
Enable Secure Boot
Why this is correct
Secure Boot prevents unauthorized OS kernels from booting, reducing risk of rootkits.
Related concept
Static NAT maps one inside address to one outside address.
✗
Enable Instance Termination Action
Why it's wrong here
Termination action configures behavior on shutdown, not security.
✗
Use preemptible VMs
Why it's wrong here
Preemptible VMs are cost-effective but do not reduce attack surface.
✗
Enable Virtual Trusted Platform Module (vTPM)
Why it's wrong here
vTPM provides attestation and integrity measurement but does not reduce attack surface.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PCSE NAT questions on configuration and troubleshooting.
Managing operations in a cloud solution environment — This question tests Managing operations in a cloud solution environment — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Remove public IP addresses — Removing public IP and enabling Secure Boot reduce exposure. vTPM and other options do not directly reduce attack surface.
What should I do if I get this PCSE question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PCSE NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This PCSE 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 PCSE exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.