CompTIA CS0-004퍼펙트덤프자료 & CS0-004최신버전시험공부자료

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CompTIA CS0-004 Exam Syllabus Topics:

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

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최신 CompTIA CySA+ CS0-004 무료샘플문제 (Q97-Q102):

질문 # 97
The Chief Information Security Officer (CISO) reviews the following security operations metrics from the last month:

Which of the following is the best action to improve overall security operations efficiency?

A. Perform internal incident training on the most common alerts from security information and event management (SIEM).
B. Leverage a cloud security posture management tool to add asset context to alerts.
C. Implement playbooks for the junior analysts to use during investigations.
D. Analyze and tune the detections that are causing non-actionable alerts.

정답：D

설명：
The large number of alerts and investigations compared with only five confirmed incidents indicates excessive non-actionable alerts. Tuning detection rules reduces false positives and unnecessary analyst workload.

질문 # 98
Which of the following is the best reason to heavily segment business-critical assets from within the network?

A. Degraded functionality
B. Proprietary server
C. Legacy systems
D. Asset obfuscation

정답：C

설명：
Legacy systems present a significant security problem because they frequently cannot support current operating systems, security agents, encryption mechanisms, authentication controls, or vendor patches. When a business-critical legacy system cannot be remediated normally, strong network segmentation becomes an important compensating control. The objective is to reduce the system's reachable attack surface and restrict which users, hosts, protocols, and applications can communicate with it.
A segmented legacy asset might be placed in a dedicated VLAN or security zone and protected through restrictive firewall access-control rules, jump hosts, allowlisting, enhanced logging, and continuous monitoring. Even though segmentation does not remove the underlying vulnerability, it decreases exposure and makes exploitation or lateral movement considerably more difficult.
Degraded functionality is generally an effect or remediation constraint rather than the strongest reason for isolation. Asset obfuscation does not provide reliable security because hidden systems can still be discovered through enumeration or traffic analysis. A proprietary server is not automatically vulnerable merely because its implementation is proprietary; it may still support modern patches and security controls.
CS0-004 specifically covers segmentation as a vulnerability-scanning consideration, compensating controls as a mitigation strategy, and legacy systems as an important inhibitor to remediation.
Study Guide Reference: Vulnerability Management # Vulnerability Prioritization and Mitigation # Compensating Controls # Segmentation # Legacy-System Constraints.

질문 # 99
Which of the following helps identify the attack surface area of a new environment?

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

정답：B

설명：
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.

질문 # 100
A binary file that might contain malicious code is hosted on an isolated machine. An analyst wants to quickly detect the malicious code.
Which of the following should the analyst use?

A. Yet Another Recursive Acronym (YARA)
B. VirusTotal
C. WHOIS
D. strings

정답：A

설명：
YARA is specifically designed to identify and classify suspicious or malicious files through pattern-based rules . A YARA rule can contain textual strings, hexadecimal byte sequences, regular expressions, metadata, file characteristics, and Boolean conditions. This makes YARA particularly effective when an analyst already has a binary specimen on an isolated analysis system and needs to determine whether it contains patterns associated with malware.
The official YARA documentation describes YARA as a tool for helping malware researchers identify and classify malware samples using textual and binary patterns. Rules consist primarily of strings and logical conditions that determine whether a file matches the defined characteristics.
The strings utility can reveal printable characters embedded within a binary and is useful during preliminary static analysis, but it does not itself classify the file against structured malware-detection signatures.
VirusTotal can perform multi-engine analysis, but submitting a potentially sensitive binary from an isolated environment to an external service may be inappropriate and is unnecessary when local YARA detection is available. WHOIS provides registration information about internet resources and has no direct binary- malware detection capability.
Study Guide Reference: Security Operations # Malware Analysis # Static Analysis # YARA # Signature and Pattern Matching # Binary/File Analysis.

질문 # 101
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. Review endpoint detection logs on the SFTP server for any malware running on dest_port 22 that may be intercepting client communications.
B. Correct the misconfigured firewall by blocking dest_port 22 to prevent further credential brute- force attacks from src_IP 103. l. 114.26.
C. 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.
D. Submit a request to the engineering team to restart SFTP services on the host due to the session limit being reached.

정답：C

설명：
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.

질문 # 102
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