CS0-004クラムメディア、CS0-004合格対策

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CompTIA CS0-004 Exam Syllabus Topics:

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

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CompTIA Cybersecurity Analyst (CySA+) Certification Exam 認定 CS0-004 試験問題 (Q29-Q34):

質問 # 29
Customers are unable to upload files to an SFTP server. Firewall logs show the following activity sourced from multiple IP addresses in one geographic region:

The analyst reviewing the logs notices that the session_end_reason does not change for any of the log entries. Which of the following is the next step the analyst should take to determine what is occurring?

A. Take a packet capture of all traffic to or from dest_IP 199.52.99.11 to see whether it is responding to SYN-ACK with an ACK.
B. Review endpoint detection logs on the SFTP server for any malware running on dest_port 22 that may be intercepting client communications.
C. Submit a request to the engineering team to restart SFTP services on the host due to the session limit being reached.
D. Correct the misconfigured firewall by blocking dest_port 22 to prevent further credential brute- force attacks from src_IP 103. l. 114.26.

正解：A

解説：
The firewall log shows TCP traffic to port 22 is being allowed, but the sessions consistently end with an "aged-out/incomplete" status. This commonly indicates that the TCP three-way handshake is not completing. Capturing packets to determine whether the server is responding properly and whether clients are completing the handshake is the appropriate next step to identify where the connection process is failing.

質問 # 30
Which of the following will most likely help decrease false positives?

A. Automating escalation
B. Alert tuning
C. A security operations center (SOC) dashboard
D. Threat hunting

正解：B

解説：
Alert tuning refines detection rules and thresholds based on environment-specific behavior, reducing noise and eliminating unnecessary or incorrect alerts, which directly decreases false positives.

質問 # 31
Multiple users report unexpected mouse movements and terminal windows opening. An analyst reviewing the network traffic logs observes the following:

Which of the following is the most likely reason for the reported symptoms?

A. A reverse tunnel is being used to send commands.
B. Virtual Network Computing is being used to connect to systems.
C. Remote Desktop Protocol (RDP) is being used to remotely control the impacted computers.
D. Activity is on an internally addressable network.

正解：B

解説：
TCP port 5900 is the standard port for VNC, which provides interactive remote control of a system's desktop, including mouse movement and opening terminal windows.

質問 # 32
Which of the following helps identify the attack surface area of a new environment?

A. Open Systems Interconnection (OSI) model
B. Cyber Kill Chain
C. Software development life cycle (SDLC)
D. Incident response process

正解：B

解説：
The Cyber Kill Chain provides a structured model of the stages of a cyberattack, from reconnaissance through exploitation and data exfiltration. By mapping potential attack paths across these stages, analysts can identify where an attacker could interact with systems and services in the environment. This helps reveal exposed entry points and weaknesses, effectively identifying the environment's attack surface area.

質問 # 33
A recent security audit found that RCE was possible for a specific application server that requires public access for HTTP and HTTPS traffic. Which of the following controls should a security analyst recommend?

A. Only allowing one application server to be publicly accessible
B. Modifying the rules on the WAF to sanitize user input
C. Configuring a firewall rule to deny all inbound external traffic
D. Creating an IAM policy so that only administrators can access the server

正解：B

質問 # 34
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