Free CompTIA CS0-004 Practice Test & Real Exam Questions

  • Exam Code/Number: CS0-004
  • Exam Name/Title: CompTIA Cybersecurity Analyst (CySA+) Certification Exam
  • Certification Provider: CompTIA
  • Corresponding Certification: CompTIA CySA+
  • Exam Questions: 135
  • Updated On: Aug 09, 2026
A security architect works with a client on security operations center (SOC) capabilities. The security architect wants to ensure the log correlation and investigation activities are accurate across the infrastructure. Which of the following is the best for the client to implement?
Correct Answer: B Vote an answer
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A public threat intelligence report includes indicators of compromise (IoCs) for threat actors. The threat actors are exploiting a zero-day vulnerability that the vendor has not fixed. Which of the following techniques should be used until a patch is available?
Correct Answer: A Vote an answer
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A vulnerability analyst must perform a security assessment on an edge device running various services. The analyst runs an Nmap port scan and sees the following output:

Which of the following should the analyst do next to validate the discovered remote access service is secure?
Correct Answer: B Vote an answer
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An analyst prepares an after action report following an incident in which multiple systems were compromised over several days. The analyst provides raw event logs from each compromised system in the report and determines that a patient-zero system cannot be found. Which of the following should the analyst do to determine the patient-zero system?
Correct Answer: B Vote an answer
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A security analyst analyzes the output of a web application access log for a company based in the United States. Given the following output:

Which of the following users should be investigated first?
Correct Answer: C Vote an answer
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Which of the following is the main concept behind the use of an attack methodology framework?
Correct Answer: C Vote an answer
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A vulnerability analyst runs a credentialed vulnerability scan covering all addressable enterprise assets. After running the scan, the analyst discovers a large number of critical vulnerabilities that cannot be immediately remediated. Which of the following are the most likely reasons why the vulnerabilities cannot be immediately addressed?
Correct Answer: D Vote an answer
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Which of the following is the most important component to include in the preparation phase of an incident response plan?
Correct Answer: D Vote an answer
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Due to some incidents involving non-authorized devices, a company wants to implement a solution that only allows access to its LAN and Wi-Fi if certain policies are matched. Which of the following is the best solution to implement?
Correct Answer: D Vote an answer
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An analyst reviews the following system logs from a recent breach attempt:

Which of the following techniques did the attacker attempt to use?
Correct Answer: A Vote an answer
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