The answer is to move the application to a sandboxed virtual machine and isolate it from the network. This strategy is correct because it directly addresses the core risk of securing legacy applications on unsupported OS: the operating system lacks security patches, leaving known vulnerabilities exposed. By sandboxing the application in a virtual machine and restricting network access, you create a hardened containment zone that minimizes the attack surface, preventing lateral movement even if the OS is compromised. On the Systems Security Certified Practitioner SSCP exam, this question tests your understanding of isolation controls as a compensating control for outdated systems. A common trap is choosing application whitelisting, which only controls executable files but does nothing to protect against OS-level exploits. Remember the memory tip: “Sandbox and sever the network” — isolation is your last line of defense when you cannot patch the host.
SSCP Systems and Application Security Practice Question
This SSCP practice question tests your understanding of systems and application security. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
A security analyst needs to ensure that a legacy application running on an unsupported operating system remains secure until it can be replaced. Which strategy provides the most effective risk reduction?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Move the application to a sandboxed virtual machine and isolate it from the network.
Option D is correct because isolating the application in a sandboxed virtual machine with network restrictions minimizes the attack surface. Option A is incorrect because application whitelisting does not protect against OS-level vulnerabilities. Option B is incorrect because upgrading the application is not feasible if it runs on an unsupported OS. Option C is incorrect because third-party patches may introduce instability or conflicts.
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.
✓
Move the application to a sandboxed virtual machine and isolate it from the network.
Why this is correct
Sandboxing and network isolation contain the application and reduce exposure.
Related concept
Static NAT maps one inside address to one outside address.
✗
Apply all available security patches from third-party sources.
Why it's wrong here
Third-party patches for an unsupported OS are unreliable and risky.
✗
Upgrade the application to the latest version with vendor support.
Why it's wrong here
Upgrading may require a supported OS, which is not available.
✗
Implement application whitelisting to allow only approved executables.
Why it's wrong here
Whitelisting limits execution but does not address underlying OS vulnerabilities.
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
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.
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 SSCP NAT questions on configuration and troubleshooting.
Systems and Application Security — This question tests Systems and Application Security — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Move the application to a sandboxed virtual machine and isolate it from the network. — Option D is correct because isolating the application in a sandboxed virtual machine with network restrictions minimizes the attack surface. Option A is incorrect because application whitelisting does not protect against OS-level vulnerabilities. Option B is incorrect because upgrading the application is not feasible if it runs on an unsupported OS. Option C is incorrect because third-party patches may introduce instability or conflicts.
What should I do if I get this SSCP 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 SSCP 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 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.
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.