- A
Disable user accounts associated with the infected systems
Why wrong: Disabling accounts is useful but may not prevent lateral movement if the malware uses other credentials or exploits.
- B
Isolate the affected systems by applying VLAN quarantine or ACLs
Network isolation quickly stops communication with other systems.
- C
Reboot the affected systems to clear malware from memory
Why wrong: Rebooting may destroy volatile evidence and may not remove persistence mechanisms.
- D
Restore the affected systems from backup
Why wrong: Restoration is part of recovery and should occur after containment and eradication.
Question 644 of 1,000
SSCP Incident Response and Recovery Practice Question
This SSCP practice question tests your understanding of incident response and recovery. 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.
During a malware outbreak, a security analyst needs to contain the spread. The affected systems are on the same VLAN as critical servers. Which of the following containment actions should be performed FIRST to minimize impact?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"first"Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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
✓
Isolate the affected systems by applying VLAN quarantine or ACLs
Isolating the affected systems by applying VLAN quarantine or ACLs is the correct first action because it immediately stops the malware from spreading laterally across the same VLAN to critical servers, while preserving forensic evidence. This network-level containment is faster and less disruptive than account or system-level changes, and it prevents the outbreak from propagating before any remediation begins.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 user accounts associated with the infected systems
Why it's wrong here
Disabling accounts is useful but may not prevent lateral movement if the malware uses other credentials or exploits.
- ✓
Isolate the affected systems by applying VLAN quarantine or ACLs
Why this is correct
Network isolation quickly stops communication with other systems.
Clue confirmation
The clue words "first", "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Reboot the affected systems to clear malware from memory
Why it's wrong here
Rebooting may destroy volatile evidence and may not remove persistence mechanisms.
- ✗
Restore the affected systems from backup
Why it's wrong here
Restoration is part of recovery and should occur after containment and eradication.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the principle that containment must occur at the network layer first, not at the host or user layer, and the trap here is that candidates mistakenly choose to reboot or disable accounts, thinking they are stopping the infection, when in fact they are ignoring the immediate lateral spread risk.
Detailed technical explanation
How to think about this question
VLAN quarantine leverages 802.1Q tagging and ACLs to dynamically move infected hosts into a separate broadcast domain, effectively cutting off Layer 2 and Layer 3 communication with critical assets. This can be automated via NAC (Network Access Control) solutions like Cisco ISE, which can trigger a quarantine VLAN upon detecting a malicious signature. In a real-world scenario, failing to isolate first can allow worm-like malware to saturate the VLAN with broadcast traffic or exploit SMB vulnerabilities (e.g., EternalBlue) within seconds.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Incident Response and Recovery — study guide chapter
Learn the concepts, then practise the questions
- →
Incident Response and Recovery practice questions
Targeted practice on this topic area only
- →
All SSCP questions
1,000 questions across all exam domains
- →
Systems Security Certified Practitioner SSCP study guide
Full concept coverage aligned to exam objectives
- →
SSCP practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related SSCP practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Access Controls practice questions
Practise SSCP questions linked to Access Controls.
Risk Identification, Monitoring, and Analysis practice questions
Practise SSCP questions linked to Risk Identification, Monitoring, and Analysis.
Incident Response and Recovery practice questions
Practise SSCP questions linked to Incident Response and Recovery.
Security Operations and Administration practice questions
Practise SSCP questions linked to Security Operations and Administration.
Cryptography practice questions
Practise SSCP questions linked to Cryptography.
Network and Communications Security practice questions
Practise SSCP questions linked to Network and Communications Security.
Systems and Application Security practice questions
Practise SSCP questions linked to Systems and Application Security.
Risk Identification, Monitoring and Analysis practice questions
Practise SSCP questions linked to Risk Identification, Monitoring and Analysis.
SSCP fundamentals practice questions
Practise SSCP questions linked to SSCP fundamentals.
SSCP scenario practice questions
Practise SSCP questions linked to SSCP scenario.
SSCP troubleshooting practice questions
Practise SSCP questions linked to SSCP troubleshooting.
Practice this exam
Start a free SSCP practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this SSCP question test?
Incident Response and Recovery — This question tests Incident Response and Recovery — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Isolate the affected systems by applying VLAN quarantine or ACLs — Isolating the affected systems by applying VLAN quarantine or ACLs is the correct first action because it immediately stops the malware from spreading laterally across the same VLAN to critical servers, while preserving forensic evidence. This network-level containment is faster and less disruptive than account or system-level changes, and it prevents the outbreak from propagating before any remediation begins.
What should I do if I get this SSCP question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "first", "minimum / minimize". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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 →
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.
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.