- A
Disable unnecessary VM guest tools
Why wrong: Reduces attack surface but is less critical than patching.
- B
Apply the latest patches to the hypervisor
Patching fixes known vulnerabilities that could be used for VM escape.
- C
Use VLAN segmentation for VM networks
Why wrong: VLANs isolate network traffic, not hypervisor-level attacks.
- D
Use snapshots for quick recovery
Why wrong: Snapshots aid recovery but do not prevent escapes.
Question 319 of 1,000
SSCP Systems and Application Security Practice Question
This SSCP practice question tests your understanding of systems and application security. 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.
To prevent VM escape attacks in a virtualized environment, which of the following is the most critical security measure?
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
✓
Apply the latest patches to the hypervisor
VM escape exploits vulnerabilities in the hypervisor to break isolation. Regularly patching the hypervisor addresses known vulnerabilities. Disabling guest tools reduces attack surface but may impact functionality. VLAN segmentation and snapshots do not prevent escape.
Key principle: A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Disable unnecessary VM guest tools
Why it's wrong here
Reduces attack surface but is less critical than patching.
- ✓
Apply the latest patches to the hypervisor
- ✗
Use VLAN segmentation for VM networks
Why it's wrong here
VLANs isolate network traffic, not hypervisor-level attacks.
- ✗
Use snapshots for quick recovery
Why it's wrong here
Snapshots aid recovery but do not prevent escapes.
Common exam traps
Common exam trap: an active trunk can still block the VLAN you need
A trunk being up does not prove every VLAN is crossing it. Check allowed VLAN lists, native VLAN mismatch, VLAN existence and access-port assignment.
Detailed technical explanation
How to think about this question
VLAN questions usually combine access-port and trunking clues. The key is to identify whether the issue is local to one switchport, caused by the trunk, or caused by the VLAN not existing where it needs to exist.
KKey Concepts to Remember
- Access ports place end devices into a single VLAN.
- Trunk ports carry multiple VLANs between switches.
- Allowed VLAN lists decide which VLANs can cross a trunk.
- Native VLAN mismatch can create confusing symptoms.
TExam Day Tips
- Use show vlan brief to verify access VLANs.
- Use show interfaces trunk to verify trunk state and allowed VLANs.
- Do not treat every same-VLAN issue as a routing problem.
Key takeaway
A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Real-world example
How this comes up in practice
A security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
Visual reference
What to study next
Got this wrong? Here's your next step.
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related SSCP questions on switching, trunking, and access-port configuration.
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FAQ
Questions learners often ask
What does this SSCP question test?
Systems and Application Security — This question tests Systems and Application Security — Access ports place end devices into a single VLAN..
What is the correct answer to this question?
The correct answer is: Apply the latest patches to the hypervisor — VM escape exploits vulnerabilities in the hypervisor to break isolation. Regularly patching the hypervisor addresses known vulnerabilities. Disabling guest tools reduces attack surface but may impact functionality. VLAN segmentation and snapshots do not prevent escape.
What should I do if I get this SSCP question wrong?
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related SSCP questions on switching, trunking, and access-port configuration.
What is the key concept behind this question?
Access ports place end devices into a single VLAN.
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Last reviewed: Jul 4, 2026
This SSCP practice question is part of Courseiva's free ISC2 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 SSCP exam.
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