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CompTIA CS0-004 Exam Syllabus Topics:

SectionWeightObjectives
Vulnerability Management26%- Vulnerability Scanning Methods
  • 1. Security baseline scanning
    • 2. Discovery
      • 3. Asset inventory
        • 4. Scan types
          • 5. Planning considerations
            - Vulnerability Assessment Tools
            • 1. Cloud infrastructure assessment tools
              • 2. Breach attack simulation tools
                • 3. Network scanning and mapping
                  • 4. Multipurpose tools
                    • 5. Vulnerability scanners
                      • 6. Web application scanners
                        - Control Types, Risks, and Vulnerability Management
                        • 1. Control functions
                          • 2. Risk concepts
                            • 3. Third-party risk
                              • 4. Control types
                                • 5. Policies, governance, and service-level objectives
                                  • 6. Risk management strategies
                                    • 7. Application security
                                      - Vulnerability Prioritization and Mitigation
                                      • 1. Validation of remediation
                                        • 2. Scoring methods
                                          • 3. Vulnerability prioritization criteria
                                            • 4. Context awareness
                                              • 5. Mitigation strategies
                                                Incident Response and Management24%- Attack Methodology Frameworks
                                                • 1. Diamond Model of Intrusion Analysis
                                                  • 2. MITRE ATT&CK
                                                    • 3. Cyber Kill Chain
                                                      - Incident Response Process
                                                      • 1. Preparation
                                                        • 2. Containment
                                                          • 3. Post-incident activities
                                                            • 4. Recovery
                                                              • 5. Eradication
                                                                • 6. Detection
                                                                  • 7. Analysis
                                                                    - Incident Response Techniques
                                                                    • 1. Log collection, correlation, and enrichment
                                                                      • 2. Root cause analysis
                                                                        • 3. Corrective action development
                                                                          • 4. Incident response and communication plans
                                                                            • 5. Alerts, notifications, and triage
                                                                              • 6. Restoration
                                                                                • 7. Remediation and verification
                                                                                  • 8. Isolation and escalation
                                                                                    • 9. Evidence gathering and preservation
                                                                                      • 10. Timeline, severity, impact, and prioritization
                                                                                        • 11. Training and exercises
                                                                                          • 12. Playbooks and roles
                                                                                            Security Operations34%- Efficiency and Process Improvement in Security Operations
                                                                                            • 1. Technology and tool integration
                                                                                              • 2. Automation and orchestration
                                                                                                • 3. Streamline operations
                                                                                                  • 4. Data enrichment
                                                                                                    • 5. Standardize processes
                                                                                                      - Artificial Intelligence in Security Operations
                                                                                                      • 1. AI governance
                                                                                                        • 2. AI use cases
                                                                                                          • 3. AI risks
                                                                                                            - Threat Intelligence and Threat Hunting
                                                                                                            • 1. Tactics, techniques, and procedures
                                                                                                              • 2. Threat modeling
                                                                                                                • 3. Confidence-level impacts
                                                                                                                  • 4. Threat actors
                                                                                                                    • 5. Cyber deception
                                                                                                                      • 6. Collection methods and sources
                                                                                                                        • 7. Threat mapping
                                                                                                                          • 8. Indicators of compromise
                                                                                                                            - System and Network Architecture in Security Operations
                                                                                                                            • 1. Data protection concepts
                                                                                                                              • 2. Infrastructure and system architecture concepts
                                                                                                                                • 3. Operating system concepts
                                                                                                                                  • 4. Logging concepts
                                                                                                                                    • 5. Critical infrastructure concepts
                                                                                                                                      • 6. Network architecture concepts
                                                                                                                                        • 7. Identity and access management
                                                                                                                                          • 8. Encryption techniques
                                                                                                                                            • 9. Device management concepts
                                                                                                                                              - Tools for Determining Malicious Activity
                                                                                                                                              • 1. Sandboxing
                                                                                                                                                • 2. Packet analysis
                                                                                                                                                  • 3. Log analysis and SIEM
                                                                                                                                                    • 4. User and entity behavior analysis
                                                                                                                                                      • 5. Email analysis
                                                                                                                                                        • 6. Programming and scripting languages
                                                                                                                                                          • 7. Decoding and parsing
                                                                                                                                                            • 8. Pattern recognition and suspicious command analysis
                                                                                                                                                              • 9. Endpoint security
                                                                                                                                                                • 10. Threat intelligence platforms
                                                                                                                                                                  • 11. File analysis
                                                                                                                                                                    • 12. Domain and IP reputation
                                                                                                                                                                      • 13. File formats
                                                                                                                                                                        - Indicators of Potential Malicious Activity
                                                                                                                                                                        • 1. Cloud-related indicators
                                                                                                                                                                          • 2. Network-related indicators
                                                                                                                                                                            • 3. Application-related indicators
                                                                                                                                                                              • 4. Email-related attacks
                                                                                                                                                                                • 5. Host-related indicators
                                                                                                                                                                                  • 6. Social engineering attacks
                                                                                                                                                                                    • 7. Identity-based indicators
                                                                                                                                                                                      • 8. Unauthorized configuration
                                                                                                                                                                                        Reporting and Communication16%- Vulnerability Management Reporting and Communication
                                                                                                                                                                                        • 1. Compliance findings
                                                                                                                                                                                          • 2. Inhibitors to remediation
                                                                                                                                                                                            • 3. Vulnerability scan reports
                                                                                                                                                                                              • 4. Stakeholder identification and communication
                                                                                                                                                                                                • 5. Risk scorecards
                                                                                                                                                                                                  • 6. Metrics and key performance indicators
                                                                                                                                                                                                    • 7. Action plans
                                                                                                                                                                                                      - Security Operations and Incident Response Reporting and Communication
                                                                                                                                                                                                      • 1. Internal threat intelligence report
                                                                                                                                                                                                        • 2. Incident declaration and escalation
                                                                                                                                                                                                          • 3. Communication plan
                                                                                                                                                                                                            • 4. Post-incident reporting
                                                                                                                                                                                                              • 5. Shift and incident handover
                                                                                                                                                                                                                • 6. Executive summary
                                                                                                                                                                                                                  • 7. Metrics and key performance indicators
                                                                                                                                                                                                                    • 8. Operational security awareness

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                                                                                                                                                                                                                      CompTIA Cybersecurity Analyst (CySA+) Certification Exam Sample Questions (Q77-Q82):

                                                                                                                                                                                                                      NEW QUESTION # 77
                                                                                                                                                                                                                      Which of the following will inhibit remediation when attempting to resolve a vulnerability?

                                                                                                                                                                                                                      Answer: C

                                                                                                                                                                                                                      Explanation:
                                                                                                                                                                                                                      Legacy systems commonly inhibit vulnerability remediation because they may depend on obsolete operating systems, unsupported applications, specialized hardware, outdated protocols, or vendor products for which security updates are no longer provided. Even when a vulnerability is accurately identified, the organization may be unable to apply a modern patch without breaking compatibility, interrupting a critical business process, or violating vendor support requirements.
                                                                                                                                                                                                                      NIST guidance explicitly recognizes that legacy systems create unique security-management challenges, while federal cybersecurity guidance warns that products remaining in service after vendor support ends may lack effective mechanisms for addressing newly discovered vulnerabilities.
                                                                                                                                                                                                                      In such circumstances, vulnerability-management teams may need to use compensating controls such as segmentation, firewall restrictions, application allowlisting, stronger access controls, enhanced monitoring, or service isolation while planning migration or replacement. These controls reduce exposure but do not remove the underlying software defect.
                                                                                                                                                                                                                      "Controlled systems," "shared systems," and "closed systems" do not inherently prevent remediation. A shared system may require greater coordination, but it can still be fully supported and patchable. The defining issue with legacy technology is that technical and vendor constraints can directly prevent normal remediation .
                                                                                                                                                                                                                      Study Guide Reference: Vulnerability Management # Remediation Constraints # Legacy Systems # End-of- Life Technology # Patch Availability # Compensating Controls # System Replacement.


                                                                                                                                                                                                                      NEW QUESTION # 78
                                                                                                                                                                                                                      A security architect reviews a report from a third-party incident response consultant and observes the following:

                                                                                                                                                                                                                      Which of the following frameworks did the consultant use to perform analysis?

                                                                                                                                                                                                                      Answer: B

                                                                                                                                                                                                                      Explanation:
                                                                                                                                                                                                                      The framework is the Diamond Model of Intrusion Analysis . The Diamond Model represents malicious activity using four core interconnected features: adversary, infrastructure, capability, and victim . This structure allows incident responders and threat-intelligence analysts to examine relationships between who conducted an intrusion, the technical resources used, the capabilities or tools involved, and the targeted organization or asset.
                                                                                                                                                                                                                      The original Diamond Model paper explicitly defines an intrusion event around these four core features and connects them in a diamond-shaped analytical structure. This relational approach is particularly useful for correlating separate intrusion events, identifying common infrastructure, associating capabilities with adversaries, and developing broader campaign intelligence.
                                                                                                                                                                                                                      STRIDE is a threat-modeling categorization method covering spoofing, tampering, repudiation, information disclosure, denial of service, and elevation of privilege. MITRE ATT & CK organizes real-world adversary behavior according to tactics and techniques. The Cyber Kill Chain organizes intrusion activity into sequential attack stages. The NIST Cybersecurity Framework is a broader cybersecurity risk-management framework rather than an intrusion-event relationship model.
                                                                                                                                                                                                                      Therefore, a diagram or report organized around adversary-capability-infrastructure-victim relationships specifically identifies the Diamond Model.
                                                                                                                                                                                                                      Study Guide Reference: Incident Response and Management # Attack Methodology Frameworks # Diamond Model of Intrusion Analysis # Adversary # Infrastructure # Capability # Victim.


                                                                                                                                                                                                                      NEW QUESTION # 79
                                                                                                                                                                                                                      A security analyst runs an Nmap scan against a host with multiple open ports using the following command:
                                                                                                                                                                                                                      nmap 10.10.10.1 -p-
                                                                                                                                                                                                                      The following output is obtained after the scan:
                                                                                                                                                                                                                      Starting Nmap 7.95 ( https://nmap.org ) at 2025-07-15 15:55 UTC
                                                                                                                                                                                                                      Note: Host seems down.
                                                                                                                                                                                                                      Nmap done: 1 IP address (0 hosts up) scanned in 3.16 seconds
                                                                                                                                                                                                                      Which of the following is the most accurate way to scan the target IP for open ports?

                                                                                                                                                                                                                      Answer: A

                                                                                                                                                                                                                      Explanation:
                                                                                                                                                                                                                      The original scan fails because Nmap's host-discovery process concludes that the target appears offline before conducting the intended full port scan. Option C adds -Pn , instructing Nmap to skip normal host discovery and proceed with scanning the target as though it is online. The -p- option then instructs Nmap to test the complete TCP port range rather than only its default set.
                                                                                                                                                                                                                      This is appropriate when a live host does not respond to discovery probes because ICMP echo traffic or other discovery packets may be filtered by firewalls, host-based controls, or network policy. A system can therefore appear "down" to Nmap's discovery phase while still exposing reachable TCP services.
                                                                                                                                                                                                                      Option B uses -sn, which performs host discovery without a port scan and therefore contradicts the requirement. Option A scans only a limited set of explicitly identified ports and includes unrelated functionality. Option D unnecessarily changes the scope to an entire /24, performs operating-system detection and DNS resolution, and invokes an SSL cipher script; none of those modifications addresses the immediate host-discovery problem.
                                                                                                                                                                                                                      Study Guide Reference: Vulnerability Management # Nmap # Host Discovery # -Pn # Full Port Scanning - p- # Firewall/ICMP Filtering # Scan Troubleshooting.


                                                                                                                                                                                                                      NEW QUESTION # 80
                                                                                                                                                                                                                      Which of the following best explains compensating controls?

                                                                                                                                                                                                                      Answer: B

                                                                                                                                                                                                                      Explanation:
                                                                                                                                                                                                                      A compensating control is an alternative safeguard implemented when the primary control or recommended remediation cannot be applied, often due to technical, operational, or business constraints. Its purpose is to reduce the associated risk to an acceptable level when the underlying vulnerability cannot be directly remediated.


                                                                                                                                                                                                                      NEW QUESTION # 81
                                                                                                                                                                                                                      Which of the following refers to several identified issues that need remediation after a recent audit?

                                                                                                                                                                                                                      Answer: E

                                                                                                                                                                                                                      Explanation:
                                                                                                                                                                                                                      Compliance findings are the issues, deficiencies, or nonconformities identified during an audit that require remediation. These findings document where controls, policies, or procedures do not meet required standards or regulatory requirements and must be addressed to achieve compliance.


                                                                                                                                                                                                                      NEW QUESTION # 82
                                                                                                                                                                                                                      ......

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