CompTIA CS0-003 問題集

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試験コード：CS0-003

試験名称：CompTIA Cybersecurity Analyst (CySA+) Certification Exam

最近更新時間：2026-09-28

問題と解答：全510問

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質問 1：
A user downloads software that contains malware onto a computer that eventually infects numerous other systems. Which of the following has the user become?
A. Insider threat
B. Script kiddie
C. Advanced persistent threat
D. Hacklivist
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 2：
Which of the following is the best use of automation in cybersecurity?
A. Ensure faster incident detection, analysis, and response.
B. Reduce the time for internal user access requests.
C. Eliminate configuration errors when implementing new hardware.
D. Lower costs by reducing the number of necessary staff.
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 3：
After conducting a cybersecurity risk assessment for a new software request, a Chief Information Security Officer (CISO) decided the risk score would be too high. The CISO refused the software request. Which of the following risk management principles did the CISO select?
A. Avoid
B. Accept
C. Mitigate
D. Transfer
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 4：
Which of the following explains the reason it is important to secure the file permissions of directories listed in the system path variable?
A. To reduce the likelihood of executing malicious programs
B. To encrypt all files with the full disk encryption solution
C. To block EDR and anti-malware bypass attacks against the OS
D. To ensure custom code is not injected into the application at runtime
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 5：
An incident response analyst is taking over an investigation from another analyst. The investigation has been going on for the past few days. Which of the following steps is most important during the transition between the two analysts?
A. Accept all findings and continue to investigate the next item target.
B. Validate the root cause from the prior analyst.
C. Identify and discuss the lessons learned with the prior analyst.
D. Review the steps that the previous analyst followed.
正解：D

質問 6：
A SOC manager receives a phone call from an upset customer. The customer received a vulnerability report two hours ago: but the report did not have a follow-up remediation response from an analyst. Which of the following documents should the SOC manager review to ensure the team is meeting the appropriate contractual obligations for the customer?
A. MOU
B. Limitation of liability
C. SLA
D. NDA
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 7：
A SIEM alert is triggered based on execution of a suspicious one-liner on two workstations in the organization ' s environment. An analyst views the details of these events below:

Which of the following statements best describes the intent of the attacker, based on this one-liner?
A. Attacker is escalating privileges via JavaScript.
B. Attacker is utilizing custom malware to download an additional script.
C. Attacker is attempting to install persistence mechanisms on the target machine.
D. Attacker is executing PowerShell script " AccessToken.psr.
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 8：
A security analyst detects an email server that had been compromised in the internal network. Users have been reporting strange messages in their email inboxes and unusual network traffic. Which of the following incident response steps should be performed next?
A. Eradication
B. Containment
C. Preparation
D. Validation
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 9：
During the log analysis phase, the following suspicious command is detected-

Which of the following is being attempted?
A. Buffer overflow
B. ICMP tunneling
C. Smurf attack
D. RCE
正解：D
解説: (Topexam メンバーにのみ表示されます)

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CompTIA CS0-003 認定試験の出題範囲：

トピック	出題範囲
トピック 1	Reporting and Communication: This topic focuses on explaining the importance of vulnerability management and incident response reporting and communication.
トピック 2	Incident Response and Management: It is centered around attack methodology frameworks, performing incident response activities, and explaining preparation and post-incident phases of the life cycle.
トピック 3	Vulnerability Management: This topic discusses involving implementing vulnerability scanning methods, analyzing vulnerability assessment tool output, analyzing data to prioritize vulnerabilities, and recommending controls to mitigate issues. The topic also focuses on vulnerability response, handling, and management.
トピック 4	Security Operations: It focuses on analyzing indicators of potentially malicious activity, using tools and techniques to determine malicious activity, comparing threat intelligence and threat hunting concepts, and explaining the importance of efficiency and process improvement in security operations.