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CompTIA CS0-004 Exam Syllabus Topics:

Section	Weight	Objectives
Security Operations	34%	- Efficiency and Process Improvement in Security Operations 1. Streamline operations 2. Standardize processes 3. Automation and orchestration 4. Technology and tool integration 5. Data enrichment - Artificial Intelligence in Security Operations 1. AI governance 2. AI risks 3. AI use cases - Tools for Determining Malicious Activity 1. Endpoint security 2. File analysis 3. Email analysis 4. Pattern recognition and suspicious command analysis 5. User and entity behavior analysis 6. Programming and scripting languages 7. File formats 8. Threat intelligence platforms 9. Sandboxing 10. Decoding and parsing 11. Domain and IP reputation 12. Packet analysis 13. Log analysis and SIEM - Threat Intelligence and Threat Hunting 1. Indicators of compromise 2. Threat actors 3. Tactics, techniques, and procedures 4. Cyber deception 5. Threat mapping 6. Confidence-level impacts 7. Threat modeling 8. Collection methods and sources - System and Network Architecture in Security Operations 1. Encryption techniques 2. Identity and access management 3. Data protection concepts 4. Operating system concepts 5. Critical infrastructure concepts 6. Device management concepts 7. Network architecture concepts 8. Logging concepts 9. Infrastructure and system architecture concepts - Indicators of Potential Malicious Activity 1. Unauthorized configuration 2. Cloud-related indicators 3. Social engineering attacks 4. Host-related indicators 5. Email-related attacks 6. Application-related indicators 7. Identity-based indicators 8. Network-related indicators
Reporting and Communication	16%	- Vulnerability Management Reporting and Communication 1. Compliance findings 2. Stakeholder identification and communication 3. Risk scorecards 4. Inhibitors to remediation 5. Action plans 6. Vulnerability scan reports 7. Metrics and key performance indicators - Security Operations and Incident Response Reporting and Communication 1. Internal threat intelligence report 2. Shift and incident handover 3. Operational security awareness 4. Executive summary 5. Post-incident reporting 6. Metrics and key performance indicators 7. Incident declaration and escalation 8. Communication plan
Incident Response and Management	24%	- Attack Methodology Frameworks 1. Cyber Kill Chain 2. Diamond Model of Intrusion Analysis 3. MITRE ATT&CK - Incident Response Techniques 1. Incident response and communication plans 2. Restoration 3. Log collection, correlation, and enrichment 4. Alerts, notifications, and triage 5. Isolation and escalation 6. Training and exercises 7. Timeline, severity, impact, and prioritization 8. Root cause analysis 9. Evidence gathering and preservation 10. Playbooks and roles 11. Remediation and verification 12. Corrective action development - Incident Response Process 1. Detection 2. Eradication 3. Post-incident activities 4. Recovery 5. Containment 6. Analysis 7. Preparation
Vulnerability Management	26%	- Vulnerability Prioritization and Mitigation 1. Scoring methods 2. Mitigation strategies 3. Context awareness 4. Vulnerability prioritization criteria 5. Validation of remediation - Control Types, Risks, and Vulnerability Management 1. Policies, governance, and service-level objectives 2. Risk management strategies 3. Application security 4. Control functions 5. Risk concepts 6. Third-party risk 7. Control types - Vulnerability Scanning Methods 1. Planning considerations 2. Scan types 3. Asset inventory 4. Security baseline scanning 5. Discovery - Vulnerability Assessment Tools 1. Cloud infrastructure assessment tools 2. Vulnerability scanners 3. Network scanning and mapping 4. Multipurpose tools 5. Web application scanners 6. Breach attack simulation tools

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CompTIA Cybersecurity Analyst (CySA+) Certification Exam Sample Questions (Q21-Q26):

NEW QUESTION # 21
A security analyst reruns infrastructure as code (IaC) to tear down and rebuild a new environment after a ransomware attack.
Which of the following describes this phase?

A. Recovery
B. Post-incident
C. Containment
D. Detection
E. Analysis

Answer: A

Explanation:
Rebuilding the environment from infrastructure-as-code definitions is a recovery activity because the organization is restoring trusted operational capability after the ransomware incident has been controlled. IaC provides a particularly effective recovery mechanism because infrastructure can be reconstructed according to predefined, version-controlled configurations instead of attempting to repair every potentially compromised component manually.
During detection and analysis, responders establish that malicious activity occurred and determine its scope.
Containment limits additional damage or spread. Eradication removes malicious artifacts, persistence, compromised credentials, and the underlying causes of the incident. Recovery then restores affected systems and services to normal operation while ensuring they are returned in a trustworthy state.
NIST defines recovery as the restoration of assets and operations affected by cybersecurity incidents and emphasizes verifying restored assets before normal operations resume. Tearing down potentially compromised infrastructure and deploying fresh resources from controlled IaC templates directly fulfills that purpose.
Post-incident activities occur after operational restoration and focus on lessons learned, reporting, process improvement, and corrective recommendations.
Study Guide Reference: Incident Response and Management # Containment # Eradication # Recovery # Infrastructure as Code # Rebuilding from Known-Good Configurations # Validation.

NEW QUESTION # 22
Which of the following best explains the importance of communicating unusual alert findings?

A. To define how each activity is triaged
B. To ensure activities are properly investigated
C. To identify who found the activity
D. To provide better metrics related to activities

Answer: B

Explanation:
Communicating unusual alert findings ensures that potentially significant security activities receive appropriate attention and investigation. What initially appears unusual may indicate a developing threat, compromise, or control failure, and timely communication helps analysts validate, investigate, and respond before the issue escalates.

NEW QUESTION # 23
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?

A. mschultz
B. dmann
C. jschott
D. tlindy

Answer: D

Explanation:
tlindy has a successful login from a Russian IP address between successful U.S.-based logins, indicating a potentially compromised account or impossible-travel activity. The other Russian login attempts shown were unsuccessful.

NEW QUESTION # 24
A security operations center analyst receives an alert from the security information and event management system. The analyst quickly reviews the alert and sees a workstation infected with malware. The analyst then uses the endpoint detection and response tool to isolate the workstation from the network.
Which of the following best describes the steps that occurred in this scenario?

A. Detection, analysis, and containment
B. Analysis, eradication, and recovery
C. Isolation, mitigation, and analysis
D. Analysis, containment, and eradication

Answer: A

Explanation:
The sequence is detection, analysis, and containment . First, the SIEM generates an alert indicating potentially malicious activity. This represents detection because the security monitoring infrastructure has identified a condition requiring investigation.
The analyst then reviews the alert and determines that the workstation is infected with malware. That validation and interpretation constitute analysis . Analysis establishes whether an alert represents a true incident, determines affected assets, and develops sufficient understanding to choose an appropriate response.
Finally, the analyst uses the EDR platform to isolate the workstation from the network. Isolation is a classic containment action because it prevents the infected endpoint from communicating with other systems, spreading malware, exfiltrating data, or maintaining command-and-control communications while the investigation continues.
Eradication has not yet occurred because the scenario does not indicate that the malware, persistence, compromised credentials, or root cause has been removed. Recovery also has not occurred because the system has not been restored to normal service.
NIST's current incident-response model explicitly emphasizes Detect, Respond, and Recover and includes containment and eradication within incident-response activities.
Study Guide Reference: Incident Response and Management # Detection # Analysis # Containment # Endpoint Isolation # Eradication # Recovery.

NEW QUESTION # 25
A security operations center (SOC) analyst investigates the results of a password spray test conducted by the vulnerability management team. The analyst must:
- Identify Linux systems that have successful and unsuccessful logins
with username "User1".
- Create an output report named "linux-events" of all the events to a
flat file.
The analyst issues the following console command:
ls /var/log/
The shortened output of the command is below:

Which of the following commands should the analyst use to meet the report output requirements?

A. cat /var/log/sssd | grep "User1" > linux-events.txt
B. cat /var/log/auth.log | grep "User1" > linux-events.txt
C. cat /var/log/faillog.log | grep "User1" > linux-events.txt
D. cat /var/log/syslog | grep "User1" > linux-events.txt

Answer: B

Explanation:
/var/log/auth.log contains Linux authentication events, including successful and failed login attempts. grep selects entries for User1, and > writes them to the required flat file.

NEW QUESTION # 26
......

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