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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Cybersecurity Analyst (CySA+) Certification Exam |
| Exam Number: | CS0-003 |
| Real Exam Qty: | 85 |
| Exam Format: | Performance-Based, Multiple Choice (multiple-answer), Multiple Choice (single-answer) |
| Exam Duration: | 165 minutes |
| Available Languages: | English, Portuguese, Japanese |
| Exam Price: | USD $370 |
| Passing Score: | 750 (on a scale of 100-900) |
| Related Certifications: | CompTIA PenTest+ CompTIA CASP+ CompTIA Security+ |
| Certificate Validity Period: | 3 years |
| Sample Questions: | CompTIA CS0-003 Sample Questions |
| Exam Way: | In-person at Pearson VUE testing centers or online proctored |
| Pre Condition: | Recommended: Network+ and Security+ certifications or equivalent experience; 3-4 years of hands-on experience in cybersecurity |
| Official Syllabus URL: | https://www.comptia.org/certifications/cybersecurity-analyst |
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CS0-003 認證考試衡量候選人的能力，能夠識別和分析網絡安全威脅、漏洞和風險，並設計並實現有效的安全解決方案，保護計算機系統和網絡免受網絡攻擊。考試涵蓋一系列主題，例如威脅檢測、事件響應、安全分析和漏洞管理。
問題 #294
A security analyst needs to identify the devices in a critical infrastructure network that handles an oil and gas pipeline. The network has devices connected over IPv4 using either HTTP or Modbus protocols running on the standard ports. Which of the following approaches should the analyst use to achieve the objective?
答案：D
解題說明：
The correct answer is B because this is a critical infrastructure / ICS / OT environment. The safest option listed is a targeted, low-impact banner-grabbing approach against the known standard ports: TCP 80 for HTTP and TCP 502 for Modbus . In critical infrastructure, the analyst should avoid aggressive or broad scanning methods that could disrupt fragile industrial systems.
Exact supporting extract: the Secbay CySA+ guide states that vulnerability scanning of OT environments, including ICS and SCADA systems, requires specialized tools and methodologies because these environments have unique security requirements and constraints. It also states that vulnerabilities in ICS can have severe operational and safety implications.
The same guide explains that Modbus is a protocol used in industrial control systems and enables communication among devices connected to the same network.
The Sybex CySA+ Study Guide explains that service identification may be done by connecting and grabbing the banner or connection information provided by the service. It also explains that Nmap can perform service and version detection, but the more aggressive options are less appropriate for sensitive ICS environments.
Why the other options are incorrect:
A is incorrect because a general IT vulnerability scanner may be too intrusive for an oil and gas pipeline ICS environment.
C is incorrect because -A enables aggressive Nmap detection features, which may include OS detection, version detection, scripts, and traceroute. That is riskier in ICS/OT environments.
D is incorrect because Masscan is designed for high-speed scanning and is inappropriate for sensitive critical infrastructure networks.
B is best because it targets only the known ports and uses a less aggressive identification method.
問題 #295
Which of the following choices is most likely to cause obstacles in vulnerability remediation?
答案：D
解題說明：
CompTIA CySA+ CS0-003 explicitly lists "proprietary systems" as an inhibitor to remediation (i.e., a common obstacle that can delay or block patching/remediation).
Why D (Proprietary systems) is most likely to cause obstacles:
* Proprietary systems often require vendor-provided patches , may have restricted modification , and can create delays due to vendor response time and dependencies on vendor updates. The Secbay Press guide explains that proprietary systems can be challenging due to "restricted access, dependencies on vendor updates, and potential delays in patching."
* The Sybex Study Guide also describes that proprietary systems may not have patches available quickly (or at all), and that vendor support requirements can conflict with vulnerability management needs:
Exact extract (Sybex Study Guide): "Proprietary systems... may not have patches available or may have specific requirements placed on them by vendors... creating a conflict between vulnerability management policies and functional or business requirements." Why the other options are less "most likely" here:
* A (Not meeting an SLA) is typically an outcome (a consequence) rather than the obstacle itself. The inhibitor is the SLA constraints, not "not meeting it." CompTIA objectives list SLA as an inhibitor, not
"not meeting an SLA."
* B (Patch prioritization) is a normal vulnerability management activity, not typically categorized as an inhibitor/obstacle in the CS0-003 inhibitor list.
* C (Organizational governance) is also an inhibitor (bureaucracy/change control can slow remediation), but proprietary systems are often the most "hard-blocking" because you may be unable to patch without vendor action/support . Both are valid inhibitors, but "most likely" in practice (especially in exam framing) commonly points to vendor-controlled/proprietary constraints.
References (CompTIA CySA+ CS0-003 documents / study guides used):
* CompTIA CS0-003 Exam Objectives v4.0: "Inhibitors to remediation" includes proprietary systems
* Secbay Press CS0-003: Proprietary systems create remediation challenges due to vendor dependency and patch delays
* Sybex CS0-003 Study Guide: proprietary systems may restrict patching and vendor support requirements can block remediation
問題 #296
Members of the sales team are using email to send sensitive client lists with contact information to their personal accounts The company's AUP and code of conduct prohibits this practice. Which of the following configuration changes would improve security and help prevent this from occurring?
答案：E
解題說明：
Data loss prevention (DLP) is a set of policies and tools that aim to prevent unauthorized disclosure of sensitive data. DLP transport rules are rules that apply to email messages that are sent or received by an organization's mail server. These rules can provide deep content analysis, which means they can scan the content of email messages and attachments for sensitive data patterns, such as client lists or contact information. If a rule detects a violation of the DLP policy, it can take actions such as blocking, quarantining, or notifying the sender or recipient. This would improve security and help prevent sales team members from sending sensitive client lists to their personal accounts. Reference: CompTIA Cybersecurity Analyst (CySA+) Certification Exam Objectives (CS0-002), page 14; https://docs.microsoft.com/en-us/exchange/security-and-compliance/mail-flow-rules/data-loss-prevention
問題 #297
Joe, a leading sales person at an organization, has announced on social media that he is leaving his current role to start a new company that will compete with his current employer. Joe is soliciting his current employer's customers. However, Joe has not resigned or discussed this with his current supervisor yet. Which of the following would be the best action for the incident response team to recommend?
答案：A
解題說明：
Explanation
The best action for the incident response team to recommend in this scenario is to perform no action until HR or legal counsel advises on next steps. This action can help avoid any potential legal or ethical issues, such as violating employee privacy rights, contractual obligations, or organizational policies. This action can also help ensure that any evidence or information collected from the employee's system or network is admissible and valid in case of any legal action or dispute. The incident response team should consult with HR or legal counsel before taking any action that may affect the employee's system or network.
問題 #298
A small company does not have enough staff to effectively segregate duties to prevent error and fraud in payroll management. The Chief Information Security Officer (CISO) decides to maintain and review logs and audit trails to mitigate risk. Which of the following did the CISO implement?
答案：B
解題說明：
Compensating controls are alternative controls that provide a similar level of protection as the original controls, but are used when the original controls are not feasible or cost-effective. In this case, the CISO implemented compensating controls by reviewing logs and audit trails to mitigate the risk of error and fraud in payroll management, since segregating duties was not possible due to the small staff size.
問題 #299
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