- A
Disconnect the server from the network immediately.
Why wrong: While isolating a compromised system is sometimes necessary, doing so immediately without investigation may destroy volatile forensic evidence, disrupt legitimate services, and prevent understanding of the attacker's methods. Disconnection should be considered only after initial analysis indicates a clear threat.
- B
Block the IP address at the perimeter firewall.
Why wrong: Blocking the IP address addresses the symptom but not the root cause. The malware or process causing the connection remains active on the server, and the attacker may simply switch to a different IP. This step is premature without knowing what is causing the connection.
- C
Review the server's process list and logs to identify the source.
This is the correct first step. By examining the process list and logs (e.g., system, firewall, and application logs), the analyst can determine the specific process or service responsible for the outbound connection, assess whether it is malicious, and gather evidence for further investigation or escalation.
- D
Escalate the incident to the incident response team.
Why wrong: Escalation is appropriate once the analyst has performed initial triage and can provide the incident response team with specific findings, such as the process causing the connection and relevant log entries. Immediate escalation without investigation may delay resolution and lack necessary context.
Quick Answer
The correct first step when detecting an encrypted outbound connection is to review the server's process list and logs to identify the source. This is because an encrypted tunnel obscures the payload, so you cannot determine the connection’s intent by inspecting the traffic alone; instead, you must trace it back to the initiating process—whether a legitimate service like a scheduled backup or a malicious beacon from implanted malware. On the Security+ SY0-701 exam, this question tests the Incident Response process, specifically the Identification phase, where gathering evidence precedes containment. A common trap is jumping to block the IP or disconnect the server, which could disrupt business operations or tip off an attacker. Remember the mnemonic “PIC” for Process, Identify, Contain—always check the process list before taking action.
SY0-701 Security Operations Practice Question
This SY0-701 practice question tests your understanding of security operations. Compare every option against the stated constraints before choosing — the best answer satisfies all requirements, not just the most obvious one. 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 detects an encrypted outbound connection from a web server to an unknown IP address. The connection is persistent and occurs every 5 minutes. What is the MOST appropriate first step for the analyst to take?
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.
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
Review the server's process list and logs to identify the source.
Option C is correct because the first step in investigating an unknown encrypted outbound connection is to identify the process or service responsible for initiating it. Reviewing the server's process list and logs allows the analyst to determine whether the connection is legitimate (e.g., a scheduled update or backup) or malicious (e.g., a beacon from implanted malware). Without this visibility, actions like blocking or disconnecting could disrupt legitimate services or alert an attacker prematurely.
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.
- ✗
Disconnect the server from the network immediately.
Why it's wrong here
While isolating a compromised system is sometimes necessary, doing so immediately without investigation may destroy volatile forensic evidence, disrupt legitimate services, and prevent understanding of the attacker's methods. Disconnection should be considered only after initial analysis indicates a clear threat.
- ✗
Block the IP address at the perimeter firewall.
Why it's wrong here
Blocking the IP address addresses the symptom but not the root cause. The malware or process causing the connection remains active on the server, and the attacker may simply switch to a different IP. This step is premature without knowing what is causing the connection.
- ✓
Review the server's process list and logs to identify the source.
Why this is correct
This is the correct first step. By examining the process list and logs (e.g., system, firewall, and application logs), the analyst can determine the specific process or service responsible for the outbound connection, assess whether it is malicious, and gather evidence for further investigation or escalation.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Escalate the incident to the incident response team.
Why it's wrong here
Escalation is appropriate once the analyst has performed initial triage and can provide the incident response team with specific findings, such as the process causing the connection and relevant log entries. Immediate escalation without investigation may delay resolution and lack necessary context.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often jump to containment (disconnect or block) without first performing local analysis, failing to recognize that the initial step in incident response is always identification and scoping before containment.
Detailed technical explanation
How to think about this question
Encrypted outbound connections (e.g., HTTPS on port 443, or custom TLS on non-standard ports) are commonly used by command-and-control (C2) malware to blend with legitimate traffic. Tools like netstat, lsof, or Sysinternals TCPView can reveal the PID and associated executable, while Windows Event Logs (Event ID 5156) or Linux auditd logs can trace the connection to a specific process. In a real-world scenario, a persistent 5-minute beacon could indicate a C2 heartbeat, but it might also be a legitimate service health check or a misconfigured application update.
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.
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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: Review the server's process list and logs to identify the source. — Option C is correct because the first step in investigating an unknown encrypted outbound connection is to identify the process or service responsible for initiating it. Reviewing the server's process list and logs allows the analyst to determine whether the connection is legitimate (e.g., a scheduled update or backup) or malicious (e.g., a beacon from implanted malware). Without this visibility, actions like blocking or disconnecting could disrupt legitimate services or alert an attacker prematurely.
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: "first". 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 →
Same concept, more angles
4 more ways this is tested on SY0-701
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. 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?
medium- A.Reboot the server to clear any malicious processes from memory
- ✓ B.Isolate the server from the network to stop the communication
- C.Apply the latest security patches to the server
- D.Ignore the alert because the external IP might be a false positive
Why B: 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.
Variation 2. A security analyst at a financial firm detects an unusual spike in outbound network traffic from a database server that normally only communicates with internal web servers. The traffic is directed to numerous external IP addresses in various countries. According to established incident response procedures, what should be the analyst's immediate next step?
medium- ✓ A.Disconnect the server from the network at the switch level.
- B.Run a comprehensive antivirus scan on the server.
- C.Notify the Chief Information Security Officer (CISO) of the incident.
- D.Power off the server to prevent further damage.
Why A: Disconnecting the server at the switch level (e.g., shutting down the switch port or placing it in a quarantine VLAN) is the immediate containment step per incident response procedures. This stops the outbound data exfiltration without risking data loss or corruption that could occur from a hard power-off, and it preserves volatile memory evidence for forensic analysis.
Variation 3. A security analyst detects repeated outbound traffic from a single workstation to an IP address listed on a public threat intelligence feed as a known command-and-control server. The user reports that the workstation is behaving slowly and that antivirus software is up to date. According to incident response best practices, what should the analyst do FIRST?
medium- ✓ A.Disconnect the workstation from the network
- B.Run a full antivirus scan on the workstation
- C.Notify the user that their workstation may be compromised
- D.Check the firewall logs to confirm the destination IP
Why A: The correct first step is to disconnect the workstation from the network to immediately contain the threat and prevent further command-and-control (C2) communication. Since the traffic is already confirmed to a known C2 server via a public threat intelligence feed, the priority is to stop data exfiltration and potential lateral movement, not to gather more evidence or notify the user. Incident response best practices emphasize containment before eradication or notification to minimize damage.
Variation 4. A security analyst detects unusual outbound traffic from a workstation to an external IP address known for command and control. The analyst has verified the alert and wants to contain the threat. According to the NIST SP 800-61 incident response process, which of the following steps should the analyst take FIRST?
medium- ✓ A.Disconnect the workstation from the network
- B.Perform a forensic analysis of the workstation
- C.Reimage the workstation
- D.Alert the system administrator
Why A: According to NIST SP 800-61, the first step in containment during incident response is to prevent further damage by isolating the compromised system. Disconnecting the workstation from the network immediately stops the outbound command-and-control traffic, preventing data exfiltration and further compromise. This aligns with the 'containment' phase before any analysis or remediation occurs.
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Last reviewed: Jun 11, 2026
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