CompTIA · CS0-003
CompTIA CySA+ validates the skills required to detect, analyze, and respond to cybersecurity threats through continuous security monitoring. It covers security operations, vulnerability management, incident response, and security reporting for intermediate-level cybersecurity analysts.
Questions
700
Duration
165 minutes
Passing Score
750/900
Difficulty
ProfessionalLast Updated
Mar 2026
Use this CS0-003 practice exam to prepare for CompTIA Cybersecurity Analyst+ (CySA+) (CS0-003) with realistic questions, detailed explanations, and focused study modes. The practice bank includes 700 questions for CompTIA CS0-003, so you can review the exam steadily instead of relying on one long cram session.
As you practice, pay extra attention to recurring topics such as Security Operations, Vulnerability Management, Incident Response Management, Reporting and Communication, and Threat Intelligence and Threat Hunting. Start with short sessions to identify weak areas, then move into timed quizzes once your accuracy is consistent.
The explanations are especially useful when you want to connect exam wording to the responsibilities and scenarios described in the official certification guidance. Use the free preview first, then unlock the full question bank when you are ready to build a complete study routine.
The CompTIA Cybersecurity Analyst+ (CySA+) is the premier certification for intermediate-level cybersecurity professionals responsible for continuous security monitoring, detection, and response. Launched in June 2023 as version 3, this professional-level certification validates expertise in security operations, vulnerability management, incident response, and threat analysis through real-world scenarios and performance-based assessments. The certification emphasizes the critical technical and communication skills necessary for security analysts, SOC (Security Operations Center) analysts, and incident responders to effectively detect, analyze, prioritize, and communicate about cybersecurity threats across enterprise networks and security infrastructure.
The CySA+ certification is designed for intermediate to advanced IT professionals with hands-on cybersecurity experience who are transitioning into or advancing within security operations roles. The target audience includes incident response analysts, SOC analysts, threat intelligence specialists, security engineers, and security operations managers. Candidates should have a minimum of 4 years of hands-on information security or cybersecurity job role experience, preferably with exposure to incident response, threat detection, or security monitoring. This certification is ideal for professionals seeking to validate their expertise in threat detection and incident response or those pursuing career advancement from entry-level security positions (such as Security+ certified professionals) into specialized analyst and operational security roles.
CompTIA recommends candidates hold CompTIA Network+, Security+, or equivalent knowledge before pursuing CySA+. The primary prerequisite is a minimum of 4 years of hands-on, direct experience in information security or cybersecurity roles, specifically as an incident response analyst, security operations center (SOC) analyst, or equivalent position involving continuous security monitoring and threat detection. While formal certification prerequisites are not strictly enforced, CompTIA strongly advises that candidates possess practical experience with security tools, vulnerability assessment methodologies, incident response procedures, and security operations processes before attempting the examination. Candidates should also have foundational knowledge of network architecture, operating systems, and basic security principles.
The CySA+ (CS0-003) exam lasts 165 minutes and contains a maximum of 85 questions consisting of a mix of multiple-choice and performance-based questions (PBQs). The exam uses a scaled scoring system ranging from 100 to 900, with a passing score of 750. Performance-based questions simulate real-world security scenarios requiring hands-on analysis using tools such as Splunk, Wireshark, and Nessus to investigate malicious activity, assess vulnerabilities, and respond to security incidents. The exam is delivered via Pearson VUE testing centers (in-person) and may also be available through remote proctoring options. The version 3 (CS0-003) launched on June 6, 2023, with a typical retirement date three years after launch.
The CySA+ certification significantly enhances career prospects in the cybersecurity field, with certified professionals commanding average salaries of $106,490 in the U.S., with typical ranges between $85,000 and $115,000 depending on experience level, location, and employer size. Entry-level CySA+ positions start around $65,000, while experienced professionals frequently exceed $110,000 annually, with many analysts reporting salary increases of $10,000-$20,000 immediately after certification. The certification qualifies candidates for specialized, in-demand roles including Security Analyst ($80,000-$100,000), SOC Analyst ($90,000-$110,000), Threat Intelligence Analyst, and Incident Responder positions that exist across virtually every industry. CySA+ is DoD (Department of Defense) approved and recognized by major corporations, government agencies, and critical infrastructure organizations as proof of practical threat detection and incident response competency. The job market for information security analysts is expanding rapidly (projected 33% growth over ten years), and CySA+ holders' expertise in threat detection, vulnerability management, and incident response directly aligns with urgent organizational security needs.
5 sample questions with answers and explanations. Start a practice session to test yourself across all 700 questions.
Preview — answers shown1. Contoso's SOC team has deployed a SOAR platform integrated with their SIEM. A Tier 1 analyst receives a phishing alert and wants to understand the difference between the automated workflow that extracts IOCs, enriches them against threat feeds, quarantines the email, and notifies the user versus the step-by-step procedure document for manually disabling a compromised Active Directory account. Which of the following BEST describes these two components? (Select one!)
Explanation
A playbook is a strategic and tactical workflow tied to an incident type that includes conditional logic, branching, parallel paths, and high levels of automation, such as an automated phishing response that extracts IOCs, enriches them, quarantines emails, and notifies users. A runbook is an operational, step-by-step sequential procedure for specific tasks, such as manually disabling a compromised Active Directory account. Playbooks are broader in scope with decision logic, while runbooks are linear and procedural. They are distinct concepts, not interchangeable terms.
2. Northwind Traders' security analyst is using Nmap to scan a network segment containing both Linux and Windows servers. The analyst runs a scan using the -sX flag and notices that all ports on Windows servers show as closed, while Linux servers show a mix of open|filtered and closed ports. Which explanation BEST accounts for this behavior? (Select one!)
Explanation
The Nmap Xmas scan (-sX) sets the FIN, PSH, and URG flags simultaneously, hence the name because it lights up like a Christmas tree. According to RFC 793, an open port should not respond to these packets, while a closed port should respond with RST. However, Windows TCP/IP implementations do not follow this RFC behavior and instead send RST packets regardless of whether the port is open or closed. This causes all Windows ports to appear as closed during Xmas scans, making this scan type ineffective against Windows targets. Linux servers follow the RFC more closely, so open ports remain silent (showing as open|filtered since the scan cannot distinguish between open and filtered), while closed ports respond with RST. The behavior is not caused by firewalls, as the pattern applies universally to Windows TCP stacks. Root privilege requirements affect the default scan type selection but do not change how Xmas scan results are interpreted. There is no requirement to use -sT specifically for Windows servers.
3. Adatum Corporation's SOC team is evaluating detection technologies to improve visibility across their environment, which includes Windows endpoints, Linux servers, cloud workloads in Azure, and network infrastructure. The team wants a single platform that correlates telemetry from endpoints, network traffic, email, and cloud services to detect multi-stage attacks that span multiple vectors. Which technology BEST meets this requirement? (Select one!)
Explanation
XDR (Extended Detection and Response) is designed to correlate telemetry across multiple security domains including endpoints, network, email, and cloud workloads into a unified detection and response platform. XDR natively integrates data from diverse sources to detect multi-stage attacks that span multiple vectors. EDR is limited to endpoint telemetry only and cannot natively correlate network, email, or cloud data. SIEM collects and correlates logs from diverse sources but primarily focuses on detection and alerting rather than integrated cross-domain response, and typically requires more manual correlation. SOAR automates response workflows but relies on upstream detection from SIEM or XDR to identify threats rather than performing detection itself.
4. Fabrikam's incident response team has completed the eradication phase of a ransomware incident. Malware has been removed, compromised accounts have been disabled, and the attack vector has been closed. The team is now moving into the recovery phase. Which of the following actions should be performed during recovery? (Select two!)
Multiple correct answersExplanation
The recovery phase of the NIST SP 800-61 incident response lifecycle focuses on restoring systems to normal operations and verifying their integrity. Restoring from known-good backups that predate the compromise ensures that restored systems are free from malware and backdoors. Enhanced monitoring on restored systems is critical during recovery to detect any signs of re-infection or persistence mechanisms that may have survived the eradication process. Conducting a post-incident review belongs to the post-incident activity phase, which occurs after recovery is complete. Breach notification to regulators is a communication and reporting activity that runs parallel to response activities but is not a core recovery action. Identifying and documenting indicators of compromise is primarily a detection and analysis activity, though IOC documentation may continue throughout the incident lifecycle.
5. Fabrikam's detection engineering team wants to write vendor-agnostic detection rules that can be automatically converted to work across their Splunk, Microsoft Sentinel, and Elastic SIEM deployments. They want to store these rules in a Git repository with peer review and automated testing. Which approach BEST meets these requirements? (Select two!)
Multiple correct answersExplanation
Sigma is a YAML-based, vendor-agnostic detection rule format that can be written once and converted to SPL (Splunk), KQL (Sentinel), or Lucene (Elastic) using tools like pySigma or sigma-cli, directly addressing the multi-SIEM requirement. Detection-as-Code stores detection rules in Git repositories with CI/CD pipelines, enabling peer review via pull requests, automated testing with tools like Atomic Red Team, and version tracking with rollback capabilities. Creating separate rules manually for each SIEM defeats the purpose of vendor-agnostic detection and dramatically increases maintenance effort. STIX 2.1 is a threat intelligence data format for sharing IOCs and threat information, not a detection rule language for SIEM platforms. YARA rules are designed for malware identification and file analysis, not for SIEM log correlation and event detection.
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