- A
Reboot the server to clear any malicious processes from memory
Why wrong: Rebooting may destroy volatile evidence (e.g., processes, network connections) and does not address the root cause; the attacker could re-establish persistence after reboot.
- B
Isolate the server from the network to stop the communication
Isolation (e.g., disconnecting the network cable or blocking traffic at the switch) immediately stops the exfiltration and prevents the attacker from issuing further commands, while preserving evidence for later forensic analysis.
- C
Apply the latest security patches to the server
Why wrong: Patching addresses vulnerabilities but is a remediation step that should occur after containment and eradication. Applying patches on a compromised host may be ineffective or could even alert the attacker.
- D
Ignore the alert because the external IP might be a false positive
Why wrong: Given the alert matches a known threat intelligence feed, ignoring it could result in a successful data breach. Proper analysis should confirm, but immediate action to contain is required.
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 security analyst observes a critical server generating unusually high outbound traffic to an external IP address that is listed on a threat intelligence feed as a known command-and-control server. The analyst suspects the server is compromised. According to standard incident response procedures, what should the analyst do NEXT?
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 server from the network to stop the communication
Option B is correct because isolating the server from the network immediately stops the outbound command-and-control (C2) communication, preventing data exfiltration and further compromise. This aligns with the first step in the NIST SP 800-61 incident response process—containment—before any eradication or recovery actions are taken. Rebooting or patching without isolation could destroy volatile evidence (e.g., memory-resident malware) and allow the attacker to persist or escalate.
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 server to clear any malicious processes from memory
Why it's wrong here
Rebooting may destroy volatile evidence (e.g., processes, network connections) and does not address the root cause; the attacker could re-establish persistence after reboot.
- ✓
Isolate the server from the network to stop the communication
Why this is correct
Isolation (e.g., disconnecting the network cable or blocking traffic at the switch) immediately stops the exfiltration and prevents the attacker from issuing further commands, while preserving evidence for later forensic analysis.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Apply the latest security patches to the server
Why it's wrong here
Patching addresses vulnerabilities but is a remediation step that should occur after containment and eradication. Applying patches on a compromised host may be ineffective or could even alert the attacker.
- ✗
Ignore the alert because the external IP might be a false positive
Why it's wrong here
Given the alert matches a known threat intelligence feed, ignoring it could result in a successful data breach. Proper analysis should confirm, but immediate action to contain is required.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the containment phase with eradication or recovery, choosing to reboot or patch immediately instead of isolating the system to stop the active threat and preserve evidence.
Detailed technical explanation
How to think about this question
Network isolation can be achieved by disabling the network interface (e.g., `ifconfig eth0 down` on Linux) or by implementing an ACL on the switch port to block all traffic to/from the server. In a real-world scenario, the analyst should also capture a packet capture (PCAP) of the C2 traffic before isolation to analyze the beaconing pattern, which often uses HTTP/S, DNS tunneling, or custom protocols over non-standard ports. The threat intelligence feed may include indicators like JA3 hashes or SSL certificate fingerprints that can confirm the C2 server identity.
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.
What to study next
Got this wrong? Here's your next step.
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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: Isolate the server from the network to stop the communication — Option B is correct because isolating the server from the network immediately stops the outbound command-and-control (C2) communication, preventing data exfiltration and further compromise. This aligns with the first step in the NIST SP 800-61 incident response process—containment—before any eradication or recovery actions are taken. Rebooting or patching without isolation could destroy volatile evidence (e.g., memory-resident malware) and allow the attacker to persist or escalate.
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.
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
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