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For learners studying for CompTIA CySA+ CS0-004 (V4)
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Practice pack content
Domain 1 - Security Operations
Domain 2 – Vulnerability Management
Domain 3 – Incident Response and Management
Domain 4 – Reporting and Communication
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Try 3 CySA+ CS0-004 (V4) practice questions
Choose an answer, explore the explanation, and see why the other options are less suitable. Three short scenarios. No sign-in required.
1. Sign-ins that cannot fit the travel time
A SOC analyst sees successful sign-ins for the same employee from Chicago and Singapore only 20 minutes apart. The employee is not using an approved VPN or other location-masking service. Which identity-based indicator best describes this activity?
Answer and full explanation
Correct answer: B — Impossible travel.
Why B is correct
Impossible travel describes activity from geographically distant locations within a period shorter than realistic travel time. The two successful sign-ins occur only 20 minutes apart, so one person could not reasonably have moved from Chicago to Singapore between them. CompTIA explicitly lists impossible travel as an identity-based indicator in Objective 1.2. Microsoft security guidance uses the same concept for geographically distant activity occurring too quickly to represent normal travel. The analyst should still investigate possible benign causes, but the observed pattern is best classified as impossible travel.
Why the other options are less suitable
- A — IAM account compromise: Account compromise could ultimately explain the suspicious sign-ins. It is a broader conclusion, while impossible travel is the specific observable indicator described by the timing and geography in this scenario.
- C — Unauthorized access: Unauthorized access may also be established after investigation. The available evidence currently describes an anomalous location pattern rather than proving which of the two successful sessions was unauthorized.
- D — Business email compromise: BEC involves abuse of business email accounts or workflows, often for fraud or impersonation. The scenario provides identity sign-in telemetry but no email activity or business-payment manipulation.
Key takeaway: Two geographically distant sign-ins that occur faster than realistic travel time point to an impossible-travel indicator.
Read two more sample questions
2. Prioritizing beyond the highest CVSS score
A scanner reports one CVSS 9.8 vulnerability on an isolated lab server with no known active exploitation. A CVSS 8.1 vulnerability affects an internet-facing payment server, has active exploitation reported, and has a vendor patch available. Which finding should be prioritized first?
Answer and full explanation
Correct answer: C — Prioritize the internet-facing payment-server vulnerability.
Why C is correct
CySA+ vulnerability prioritization considers more than a base severity score. Objective 2.3 explicitly includes active exploitation, asset value, impact, remediation availability, context, and scoring methods such as CVSS and EPSS. The payment server is externally exposed, business-critical, actively targeted, and already has a patch available, creating stronger immediate remediation signals than the isolated lab finding. FIRST also describes EPSS as an exploitation-likelihood signal that should be combined with environmental context and impact rather than treated as a complete risk score. The analyst should therefore prioritize the payment-server finding first.
Why the other options are less suitable
- A — Highest CVSS always wins: CVSS severity is important, but CompTIA's objective specifically requires context-aware prioritization. Isolation, active exploitation, asset value, and impact can change remediation order even when another vulnerability has a higher CVSS score.
- B — Isolated systems first: Isolation generally reduces exposure compared with an internet-facing production asset. Nothing in the scenario makes the lab system more urgent than the actively exploited vulnerability on the payment server.
- D — Patch availability alone: An available patch strengthens the case for remediation but is not the only deciding factor. The higher priority comes from the combination of exploitation evidence, exposure, asset importance, impact, and available remediation.
Key takeaway: Prioritize vulnerabilities with severity plus real-world exploitability, exposure, asset value, impact, and remediation context.
3. Tracking digital evidence handling
During an incident investigation, a forensic disk image will move from the collecting analyst to a forensic examiner and later to the legal team. The organization must document who handled the evidence, when each transfer occurred, and why. What should be maintained?
Answer and full explanation
Correct answer: A — A chain-of-custody record.
Why A is correct
Chain of custody records the movement and handling of evidence throughout its lifecycle. The scenario specifically requires documentation of each person who handled the disk image, the transfer times, and the reasons for those transfers. CompTIA includes chain of custody under evidence gathering in Objective 3.3. NIST defines chain of custody as tracking evidence through collection, safeguarding, and analysis while documenting handlers, dates and times, and transfer purposes. Maintaining that record supports evidence integrity and accountability during the investigation.
Why the other options are less suitable
- B — Vulnerability exception: An exception documents an approved deviation from a vulnerability-remediation requirement. It does not track possession or transfer of digital evidence during an incident investigation.
- C — Risk scorecard: A risk scorecard summarizes risk information for prioritization or reporting. It does not provide the chronological evidence-handling record required by the scenario.
- D — Executive summary: An executive summary communicates major findings and impact to stakeholders. It may be part of incident reporting, but it is not the evidence-transfer record required to maintain custody accountability.
Key takeaway: Use chain of custody to document who handled evidence, when it moved, and why each transfer occurred.
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Requirements
- CompTIA recommends approximately four years of hands-on experience in a SOC analyst level 2 or vulnerability analyst role, which helps with the investigation, prioritization, and incident-response scenarios emphasized by CS0-004.
- If some topics are unfamiliar, combine question practice with foundational study and your own exercises involving SIEM and EDR analysis, vulnerability scanning, threat intelligence, log correlation, evidence handling, and incident-response workflows.
- You will need an internet-connected device, a current web browser, and an ExamsDigest account to use the online practice product; this does not imply offline access or a separate mobile application.
Know the exam you’re studying for
These details describe CompTIA’s official CySA+ CS0-004 (V4) exam.
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“I used the CySA+ practice exams during my final weeks of study, and they helped me identify weak areas in vulnerability management and incident response. The explanations were especially helpful for understanding why one answer fit the scenario better than the others.”
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