- A
Shut down the entire company network immediately.
Why wrong: A full network shutdown is usually too disruptive for an initial containment step. It can stop business operations more broadly than necessary and should be reserved for severe situations.
- B
Disconnect the affected file share or server from the network.
Isolating the affected system is the best first containment step because it helps stop the malware from spreading while preserving the rest of the environment. The goal in early incident response is to reduce impact quickly without causing unnecessary downtime. Once contained, responders can investigate scope, preserve evidence, and begin eradication and recovery.
- C
Delete the ransom note and wait to see whether the problem returns.
Why wrong: Deleting the note does not remove the malware or stop encryption activity. It only removes an indicator and can delay proper response.
- D
Restore the share immediately before checking what caused the incident.
Why wrong: Restoring too early can overwrite evidence and may reintroduce the attacker’s foothold if the source of compromise is still active.
SY0-701 Security Operations Practice Question
This SY0-701 practice question tests your understanding of security operations. 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.
A user reports a ransomware note on one department file share, but other departments are still working normally. What is the best first containment action?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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.
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
Disconnect the affected file share or server from the network.
Option B is correct because the immediate priority in a ransomware incident is to contain the threat by isolating the affected system to prevent lateral movement. Disconnecting the file share or server from the network stops the ransomware from encrypting additional files or spreading to other departments via SMB or other protocols. This aligns with the NIST SP 800-61 containment strategy, which emphasizes rapid isolation without disrupting unaffected systems.
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.
- ✗
Shut down the entire company network immediately.
Why it's wrong here
A full network shutdown is usually too disruptive for an initial containment step. It can stop business operations more broadly than necessary and should be reserved for severe situations.
- ✓
Disconnect the affected file share or server from the network.
Why this is correct
Isolating the affected system is the best first containment step because it helps stop the malware from spreading while preserving the rest of the environment. The goal in early incident response is to reduce impact quickly without causing unnecessary downtime. Once contained, responders can investigate scope, preserve evidence, and begin eradication and recovery.
Clue confirmation
The clue words "best", "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Delete the ransom note and wait to see whether the problem returns.
Why it's wrong here
Deleting the note does not remove the malware or stop encryption activity. It only removes an indicator and can delay proper response.
- ✗
Restore the share immediately before checking what caused the incident.
Why it's wrong here
Restoring too early can overwrite evidence and may reintroduce the attacker’s foothold if the source of compromise is still active.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may choose Option A (full network shutdown) because they think it is the safest action, but the exam emphasizes precise, least-disruptive containment that preserves evidence and limits business impact.
Trap categories for this question
Scenario analysis trap
A full network shutdown is usually too disruptive for an initial containment step. It can stop business operations more broadly than necessary and should be reserved for severe situations.
Detailed technical explanation
How to think about this question
Ransomware often uses SMB (port 445) or administrative shares (e.g., ADMIN$) to propagate laterally. Disconnecting the network cable or disabling the NIC at the OS level (e.g., via `netsh interface set interface name="Ethernet" admin=disable`) stops all Layer 2/3 traffic, including ongoing encryption and command-and-control (C2) communications. In a real-world scenario, failing to isolate quickly allowed the NotPetya worm to spread globally via EternalBlue, demonstrating why containment must precede any recovery steps.
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 SOC analyst notices unusual lateral movement in the network at 2 AM. The IR playbook dictates: identify and contain (isolate the affected machine), then eradicate (remove the malware), then recover (restore from backup), then document. Skipping containment before eradication risks the attacker regaining access. Questions like this test the sequence and rationale of incident response phases.
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.
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FAQ
Questions learners often ask
What does this SY0-701 question test?
Security Operations — This question tests Security Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Disconnect the affected file share or server from the network. — Option B is correct because the immediate priority in a ransomware incident is to contain the threat by isolating the affected system to prevent lateral movement. Disconnecting the file share or server from the network stops the ransomware from encrypting additional files or spreading to other departments via SMB or other protocols. This aligns with the NIST SP 800-61 containment strategy, which emphasizes rapid isolation without disrupting unaffected systems.
What should I do if I get this SY0-701 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: "best", "first". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This SY0-701 practice question is part of Courseiva's free CompTIA 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 SY0-701 exam.
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