CompTIA · CS0-003
CompTIA Cybersecurity Analyst+ (CySA+) (CS0-003) Practice Test
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.
Exam Details
Questions
700
Duration
165 minutes
Passing Score
750/900
Difficulty
ProfessionalLast Updated
Mar 2026
Topics Covered
Security OperationsVulnerability ManagementIncident Response ManagementReporting and CommunicationThreat Intelligence and Threat HuntingAttack Methodology FrameworksVulnerability Assessment and Prioritization
CompTIA Cybersecurity Analyst+ (CySA+) (CS0-003) Practice Exam Preparation
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.
Exam Domain Breakdown
Security Operations33%
Vulnerability Management30%
Incident Response Management20%
Reporting and Communication17%
Exam Overview
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.
Who Should Take This Exam
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.
Prerequisites
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.
Exam Format
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.
Skills Measured
- 1.Security Operations (33%): Monitors security events, analyzes suspicious activity, uses security tools to detect threats, differentiates between legitimate and malicious traffic, and applies appropriate containment and investigation techniques within the SOC environment
- 2.Vulnerability Management (30%): Conducts vulnerability assessments, prioritizes vulnerabilities based on risk and business impact, recommends mitigation and remediation strategies, and implements vulnerability management processes to reduce organizational risk exposure
- 3.Incident Response Management (20%): Develops and executes incident response procedures, applies attack methodology frameworks to understand attacker behavior, performs forensic analysis, and manages the full incident lifecycle from detection through recovery and lessons learned
- 4.Reporting and Communication (17%): Communicates security findings to technical and non-technical stakeholders, produces incident reports and vulnerability assessments, interprets threat intelligence, and ensures compliance with security policies and regulatory requirements through effective documentation and reporting
Study Tips
- Review the official CompTIA CySA+ exam objectives and domains systematically—focus on the weighted distribution (Security Operations 33%, Vulnerability Management 30%, Incident Response 20%, Reporting 17%)—to prioritize your study time effectively
- Gain hands-on experience with common security tools including Splunk for log analysis and SIEM investigation, Wireshark for network traffic analysis, and Nessus for vulnerability scanning, as performance-based questions heavily emphasize practical tool usage
- Practice with performance-based question simulations and virtual labs that replicate real incident response scenarios, threat investigation workflows, and vulnerability assessment procedures rather than relying solely on memorization of multiple-choice content
- Allocate 8-12 weeks for comprehensive study, or 6-8 weeks if you have existing SOC analyst experience or hold CompTIA Security+ certification—create a structured study plan that balances domain coverage with hands-on lab practice
- Use official CompTIA study resources such as the CompTIA CySA+ Study Guide (Sybex) for CS0-003, CompTIA's official self-paced study materials, and practice exams to validate your readiness before test day
Career Benefits
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.
Sample Questions
5 sample questions with answers and explanations. Start a practice session to test yourself across all 700 questions.
Preview — answers shown1. Northwind Traders' SIEM team is comparing two different SIEM architectures for a new deployment. They need to decide between a platform that parses and normalizes logs at ingestion time versus one that stores raw data and extracts fields at search time. Which comparison correctly describes these two approaches? (Select one!)
ASchema-on-write normalizes at ingestion for faster queries but has a rigid schema; schema-on-read stores raw data for flexibility but has slower queries
BBoth approaches provide identical query performance and flexibility with no meaningful difference
CSchema-on-read normalizes at ingestion for faster queries; schema-on-write stores raw data for flexibility
DSchema-on-write is used exclusively by open-source SIEMs; schema-on-read is used only by commercial SIEMs
Explanation
Schema-on-write (used by platforms like QRadar and Sentinel) parses and normalizes logs during ingestion into a predefined schema, enabling faster queries since data is already structured but requiring schema definitions before ingestion. Schema-on-read (used by platforms like Splunk) stores raw log data and extracts fields at search time, providing greater flexibility to analyze data in new ways but resulting in slower query performance for complex searches. Reversing the definitions would incorrectly swap the characteristics of each approach. The choice between approaches is not determined by whether the SIEM is open-source or commercial. The approaches have fundamentally different trade-offs in query speed, flexibility, and storage requirements.
2. Litware's security team discovers a critical vulnerability (CVSS 9.8) on a legacy manufacturing control system that cannot be patched because the vendor no longer supports the software, and replacing the system would require a six-month procurement cycle. The system controls critical production processes. Which risk response strategy with appropriate compensating controls should the team implement? (Select one!)
AAvoid the risk by immediately decommissioning the legacy system and halting production
BMitigate the risk by implementing network segmentation, enhanced monitoring, and restrictive firewall rules around the legacy system
CTransfer the risk by purchasing cyber insurance that specifically covers the legacy system
DAccept the risk by documenting it and taking no additional action until the replacement system is procured
Explanation
When a primary control (patching) cannot be implemented, compensating controls must be deployed that provide equivalent protection. Network segmentation isolates the vulnerable system from the broader network, restrictive firewall rules limit the attack surface by allowing only necessary traffic, and enhanced monitoring provides detection capability for exploitation attempts. These compensating controls reduce both the likelihood and impact of exploitation while maintaining operational continuity. Simply accepting the risk without additional controls is inappropriate for a critical CVSS 9.8 vulnerability. Cyber insurance transfers financial risk but does not reduce the technical risk of exploitation or protect production operations. Immediately decommissioning the system halts critical production, causing disproportionate business impact when compensating controls can adequately reduce the risk during the replacement procurement period.
3. Contoso's SOC analyst is investigating a potential lateral movement attack. The analyst reviews Windows Security Event Logs and notices multiple Event ID 4624 entries with Logon Type 3 originating from a single internal workstation targeting several file servers in rapid succession. Which type of activity does this pattern MOST likely indicate? (Select one!)
AA user remotely accessing their workstation via RDP
BA scheduled task executing batch processes across multiple servers
CAn administrator using the runas command to elevate privileges
DNetwork-based lateral movement using SMB authentication
Explanation
Event ID 4624 with Logon Type 3 indicates a network logon, which occurs when a user or process authenticates over the network, typically through SMB connections or mapped drives. Multiple Type 3 logons from a single workstation targeting several file servers in rapid succession is a strong indicator of lateral movement, where an attacker uses compromised credentials to authenticate to multiple systems across the network. RDP logons generate Logon Type 10 (RemoteInteractive), not Type 3. Scheduled tasks generate Logon Type 4 (Batch). The runas command generates Event ID 4648 (logon with explicit credentials), not standard Event ID 4624 with Type 3.
4. Fabrikam's security operations center receives an alert indicating potential data exfiltration. A security analyst reviews DNS query logs and observes that a single internal workstation is generating an unusually high volume of DNS TXT record queries to a domain registered two days ago. The subdomain portions of these queries contain long strings of seemingly random alphanumeric characters with high entropy. Which exfiltration technique is MOST likely being used? (Select one!)
ASteganography, where data is hidden within DNS packet headers
BDNS tunneling, where data is encoded in DNS query subdomains and responses to bypass traditional network security controls
CHTTP-based exfiltration using DNS as a redirect mechanism
DICMP tunneling, where data is embedded in ICMP echo request payloads
Explanation
DNS tunneling is a technique where attackers encode stolen data in DNS queries and receive commands through DNS responses. The key indicators described in this scenario are classic DNS tunneling signatures: high volume of queries to a single recently registered domain, use of TXT records (which can carry larger payloads than standard A records), long subdomain strings with high entropy (indicating encoded or encrypted data), and unusual query patterns from a single workstation. Attackers use DNS tunneling because DNS traffic is almost always allowed through firewalls and is frequently not inspected by security controls. ICMP tunneling uses ping packets, not DNS queries. Steganography involves hiding data within files like images or audio, not within DNS packet headers. HTTP-based exfiltration would generate HTTP traffic patterns, not the DNS query anomalies described in this scenario.
5. Tailspin Toys' security analyst is reviewing network flow data and notices that a workstation is making HTTPS connections to an external IP address every 4 minutes with slight timing variations of plus or minus 15 seconds. The connections last approximately 2 seconds each and transfer small amounts of data. No user activity is associated with the workstation during these connections. Which of the following BEST describes this network behavior? (Select one!)
AA misconfigured network time protocol client repeatedly failing to synchronize
BLegitimate application heartbeat monitoring from a cloud-based SaaS platform
CNormal operating system update check behavior with randomized polling intervals
DCommand-and-control beaconing with jitter applied to evade time-based detection
Explanation
The regular periodic connections with slight timing variations are characteristic of command-and-control beaconing with jitter. Sophisticated malware adds jitter (typically 10-30% randomness) to its callback intervals to evade detection systems that look for perfectly timed periodic connections. The combination of regular intervals, small data transfers, short connection durations, and no associated user activity strongly indicates C2 communication. Operating system update checks occur at much longer intervals (hours, not minutes) and transfer larger amounts of data. NTP synchronization failures would target NTP servers on UDP port 123, not arbitrary external IPs over HTTPS. Legitimate SaaS heartbeat monitoring would be associated with a known application process and would connect to documented vendor IP addresses, not unidentified external hosts.
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