The answer is to disconnect the laptop from the network immediately. This is correct because ransomware actively encrypts files while communicating with a command-and-control (C2) server to receive encryption keys or exfiltrate data; cutting the Wi-Fi halts that C2 channel, prevents lateral movement to other devices, and stops ongoing data theft. On the Security+ SY0-701 exam, this scenario tests your understanding of containment as the first step in incident response—a common trap is to reboot or run antivirus first, which can destroy volatile evidence or allow encryption to continue. For a ransomware immediate action, remember the priority is isolation over investigation. A useful memory tip: “Cut the cord before you record”—disconnect the network before any forensic or remediation steps.
SY0-701 Threats, Vulnerabilities, and Mitigations Practice Question
This SY0-701 practice question tests your understanding of threats, vulnerabilities, and mitigations. 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's laptop suddenly starts renaming many files and showing a ransom note. The laptop is still connected to Wi-Fi. What is the best immediate 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Disconnect the laptop from the network immediately.
Option B is correct because ransomware actively encrypts files and may communicate with a command-and-control (C2) server over the network to exfiltrate data or receive encryption keys. Disconnecting the Wi-Fi immediately stops further C2 communication, prevents lateral movement to other devices, and halts any ongoing data exfiltration. This containment step is critical before any remediation like system imaging or forensic analysis.
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.
✗
Reboot the laptop to stop the malicious process.
Why it's wrong here
Rebooting can destroy evidence and may not stop malware from recurring after startup.
✓
Disconnect the laptop from the network immediately.
Why this is correct
This limits spread to shared systems and helps contain the suspected ransomware activity quickly.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Delete the ransom note and continue working.
Why it's wrong here
Deleting the note does not remove the malware or protect any encrypted files.
✗
Change the user's password and wait for more details.
Why it's wrong here
Password changes alone do not stop encryption or prevent lateral spread on the network.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think rebooting (Option A) will stop the malicious process, but ransomware often persists across reboots via registry run keys or scheduled tasks, and the immediate priority is containment by disconnecting the network.
Detailed technical explanation
How to think about this question
Ransomware often uses a hybrid encryption scheme, such as AES-256 for file encryption and RSA-2048 for key protection, and it typically communicates over HTTPS to a C2 server to receive the public key or exfiltration commands. Disconnecting the network at the OS level (e.g., disabling the Wi-Fi adapter) or physically unplugging the Ethernet cable stops all TCP/UDP traffic, including DNS queries and outbound connections, which is more effective than simply logging off. In a real-world scenario, immediate network isolation can prevent the ransomware from encrypting network shares or spreading via SMB vulnerabilities like EternalBlue.
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 developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SY0-701 question in full detail.
Threats, Vulnerabilities, and Mitigations — This question tests Threats, Vulnerabilities, and Mitigations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Disconnect the laptop from the network immediately. — Option B is correct because ransomware actively encrypts files and may communicate with a command-and-control (C2) server over the network to exfiltrate data or receive encryption keys. Disconnecting the Wi-Fi immediately stops further C2 communication, prevents lateral movement to other devices, and halts any ongoing data exfiltration. This containment step is critical before any remediation like system imaging or forensic analysis.
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". 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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Question Discussion
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