2026年最新の有効なSY0-701試験最新問題で2026年最新の学習ガイド
SY0-701認定で究極のガイド [2026年更新]
CompTIA SY0-701 認定試験の出題範囲：
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質問 # 403
Which of the following describes the reason root cause analysis should be conducted as part of incident response?
- A. To gather loCs for the investigation
- B. To prevent future incidents of the same nature
- C. To discover which systems have been affected
- D. To eradicate any trace of malware on the network
正解：B
解説：
Root cause analysis is a process of identifying and resolving the underlying factors that led to an incident. By conducting root cause analysis as part of incident response, security professionals can learn from the incident and implement corrective actions to prevent future incidents of the same nature. For example, if the root cause of a data breach was a weak password policy, the security team can enforce a stronger password policy and educate users on the importance of password security. Root cause analysis can also help to improve security processes, policies, and procedures, and to enhance security awareness and culture within the organization. Root cause analysis is not meant to gather loCs (indicators of compromise) for the investigation, as this is a task performed during the identification and analysis phases of incident response. Root cause analysis is also not meant to discover which systems have been affected or to eradicate any trace of malware on the network, as these are tasks performed during the containment and eradication phases of incident response.
質問 # 404
The Cruel Information Security Officer (CISO) asks a security analyst to install an OS update to a production VM that has a 99% uptime SLA. The CISO tells me analyst the installation must be done as quickly as possible. Which of the following courses of action should the security analyst take first?
- A. Take a snapshot of the VM.
- B. Log in to the server and perform a health check on the VM.
- C. Install the patch Immediately.
- D. Confirm that the backup service is running.
正解：A
解説：
Before applying any updates or patches to a production VM, especially one with a 99% uptime SLA, it is crucial to first take a snapshot of the VM. This snapshot serves as a backup that can be quickly restored in case the update causes any issues, ensuring that the system can be returned to its previous state without violating the SLA. This step mitigates risk and is a standard best practice in change management for critical systems.
質問 # 405
A company has begun labeling all laptops with asset inventory stickers and associating them with employee IDs. Which of the following security benefits do these actions provide? (Choose two.)
- A. Company data can be accounted for when the employee leaves the organization.
- B. If a security incident occurs on the device, the correct employee can be notified.
- C. The security team will be able to send user awareness training to the appropriate device.
- D. When conducting penetration testing, the security team will be able to target the desired laptops.
- E. User-based firewall policies can be correctly targeted to the appropriate laptops.
- F. Users can be mapped to their devices when configuring software MFA tokens.
正解：A、B
解説：
Labeling all laptops with asset inventory stickers and associating them with employee IDs can provide several security benefits for a company. Two of these benefits are:
A . If a security incident occurs on the device, the correct employee can be notified. An asset inventory sticker is a label that contains a unique identifier for a laptop, such as a serial number, a barcode, or a QR code. By associating this identifier with an employee ID, the security team can easily track and locate the owner of the laptop in case of a security incident, such as a malware infection, a data breach, or a theft. This way, the security team can notify the correct employee about the incident, and provide them with the necessary instructions or actions to take, such as changing passwords, scanning for viruses, or reporting the loss. This can help to contain the incident, minimize the damage, and prevent further escalation.
F . Company data can be accounted for when the employee leaves the organization. When an employee leaves the organization, the company needs to ensure that all the company data and assets are returned or deleted from the employee's laptop. By labeling the laptop with an asset inventory sticker and associating it with an employee ID, the company can easily identify and verify the laptop that belongs to the departing employee, and perform the appropriate data backup, wipe, or transfer procedures. This can help to protect the company data from unauthorized access, disclosure, or misuse by the former employee or any other party.
The other options are not correct because they are not related to the security benefits of labeling laptops with asset inventory stickers and associating them with employee IDs. B. The security team will be able to send user awareness training to the appropriate device. User awareness training is a type of security education that aims to improve the knowledge and behavior of users regarding security threats and best practices. The security team can send user awareness training to the appropriate device by using the email address, username, or IP address of the device, not the asset inventory sticker or the employee ID. C. Users can be mapped to their devices when configuring software MFA tokens. Software MFA tokens are a type of multi-factor authentication that uses a software application to generate a one-time password or a push notification for verifying the identity of a user. Users can be mapped to their devices when configuring software MFA tokens by using the device ID, phone number, or email address of the device, not the asset inventory sticker or the employee ID. D. User-based firewall policies can be correctly targeted to the appropriate laptops. User-based firewall policies are a type of firewall rules that apply to specific users or groups of users, regardless of the device or location they use to access the network. User-based firewall policies can be correctly targeted to the appropriate laptops by using the username, domain, or certificate of the user, not the asset inventory sticker or the employee ID. E. When conducting penetration testing, the security team will be able to target the desired laptops. Penetration testing is a type of security assessment that simulates a real-world attack on a network or system to identify and exploit vulnerabilities. When conducting penetration testing, the security team will be able to target the desired laptops by using the IP address, hostname, or MAC address of the laptop, not the asset inventory sticker or the employee ID. Reference = CompTIA Security+ Study Guide (SY0-701), Chapter 1: General Security Concepts, page 17. Professor Messer's CompTIA SY0-701 Security+ Training Course, Section 1.4: Asset Management, video: Asset Inventory (6:12).
質問 # 406
Which of the following topics would most likely be included within an organization's SDLC?
- A. Information security policy
- B. Penetration testing methodology
- C. Branch protection requirements
- D. Service-level agreements
正解：A
解説：
Within an organization's Software Development Life Cycle (SDLC), an Information Security Policy is a vital component. It outlines the rules and procedures for ensuring that the organization's IT assets and data are protected throughout the development process. Ensuring secure coding practices, access controls, and regular security testing is fundamental in preventing vulnerabilities in applications.
Other options like service-level agreements and branch protection requirements are less likely to be integral to SDLC processes. Penetration testing methodology, while useful, is generally considered outside the scope of the SDLC.
質問 # 407
During a SQL update of a database, a temporary field used as part of the update sequence was modified by an attacker before the update completed in order to allow access to the system. Which of the following best describes this type of vulnerability?
- A. Side loading
- B. Malicious update
- C. Memory injection
- D. Race condition
正解：D
解説：
A race condition occurs when two or more processes attempt to access and modify a shared resource simultaneously, leading to unintended behavior. In this scenario, the attacker was able to modify a temporary field before the SQL update completed, indicating a time-of-check to time-of-use (TOCTOU) vulnerability, which is a type of race condition.
* Memory injection (B) refers to inserting malicious code into a running process's memory, but that is not what is happening here.
* Malicious update (C) is too broad and does not specifically describe this scenario.
* Side loading (D) is a technique where malicious software is loaded via a trusted application, unrelated to this case.
質問 # 408
A company is changing its mobile device policy. The company has the following requirements:
* Company-owned devices
* Ability to harden the devices
* Reduced security risk
* Compatibility with company resources
Which of the following would best meet these requirements?
- A. BYOD
- B. COBO
- C. CYOD
- D. COPE
正解：D
解説：
Detailed Explanation:COPE (Corporate-Owned, Personally Enabled) devices allow companies to manage and harden company-owned devices while still enabling limited personal use, reducing security risks while maintaining compatibility with corporate resources. Reference: CompTIA Security+ SY0-701 Study Guide
, Domain 3: Security Architecture, Section: "Mobile Device Deployment Models".
質問 # 409
An employee used a company's billing system to issue fraudulent checks. The administrator is looking for evidence of other occurrences of this activity. Which of the following should the administrator examine?
- A. IDS/IPS logs
- B. Vulnerability scanner logs
- C. Firewall logs
- D. Application logs
正解：D
質問 # 410
A website user is locked out of an account after clicking an email link and visiting a different website Web server logs show the user's password was changed, even though the user did not change the password. Which of the following is the most likely cause?
- A. Cross-sue request forgery
- B. ARP poisoning
- C. Directory traversal
- D. SQL injection
正解：A
解説：
The scenario describes a situation where a user unknowingly triggers an unwanted action, such as changing their password, by clicking a malicious link. This is indicative of a Cross-Site Request Forgery (CSRF) attack, where an attacker tricks the user into executing actions they did not intend to perform on a web application in which they are authenticated.
References = CompTIA Security+ SY0-701 study materials, particularly in the domain of web application security and common attack vectors like CSRF.
質問 # 411
Which of the following penetration testing teams is focused only on trying to compromise an organization using an attacker's tactics?
- A. Purple
- B. White
- C. Blue
- D. Red
正解：D
解説：
Red teams are focused only on trying to compromise an organization using an attacker's tactics. They simulate real-world attacks to test the effectiveness of the organization's security defenses and identify vulnerabilities.
Red team: Acts as adversaries to simulate attacks and find security weaknesses.
White team: Oversees and ensures the rules of engagement are followed during the penetration test.
Purple team: Facilitates collaboration between the red team and the blue team to improve security.
Blue team: Defends against attacks and responds to security incidents.
質問 # 412
A security audit of an organization revealed that most of the IT staff members have domain administrator credentials and do not change the passwords regularly. Which of the following solutions should the security learn propose to resolve the findings in the most complete way?
- A. Integrating the domain administrator's group with an IdP and requiring SSO with MFA for all access
- B. Creating group policies to enforce password rotation on domain administrator credentials
- C. Securing domain administrator credentials in a PAM vault and controlling access with role-based access control
- D. Reviewing the domain administrator group, removing all unnecessary administrators, and rotating all passwords
正解：C
解説：
Using a Privileged Access Management (PAM) vault to secure domain administrator credentials and enforcing role-based access control (RBAC) is the most comprehensive solution. PAM systems help manage and control access to privileged accounts, ensuring that only authorized personnel can access sensitive credentials. This approach also facilitates password rotation, auditing, and ensures that credentials are not misused or left unchanged. Integrating PAM with RBAC ensures that access is granted based on the user's role, further enhancing security.
質問 # 413
A security team receives reports about high latency and complete network unavailability throughout most of the office building. Flow logs from the campus switches show high traffic on TCP 445. Which of the following is most likely the root cause of this incident?
- A. Worm
- B. NTP amplification attack
- C. Kerberoasting attack
- D. Buffer overflow
正解：A
解説：
Port 445 is used by the SMB protocol on Windows systems. Large volumes of unexpected traffic on TCP 445 are commonly associated with worms that exploit SMB vulnerabilities (such as WannaCry or NotPetya).
Worms are self-replicating malware that spread rapidly across a network, consuming bandwidth, causing high latency, and often resulting in network outages. This matches the scenario given, where network unavailability and abnormal port 445 traffic are observed.
References:
CompTIA Security+ SY0-701 Official Study Guide, Domain 2.1, "Malware Types: Worms" CompTIA Security+ Exam Objectives: 2.1 CompTIA Glossary: "Worm-A self-replicating malware that spreads across networks, often exploiting vulnerabilities such as those in SMB (TCP 445)."
質問 # 414
A recent penetration test identified that an attacker could flood the MAC address table of network switches.
Which of the following would best mitigate this type of attack?
- A. Port security
- B. Load balancer
- C. IPS
- D. NGFW
正解：A
解説：
Port security is the best mitigation technique for preventing an attacker from flooding the MAC address table of network switches. Port security can limit the number of MAC addresses learned on a port, preventing an attacker from overwhelming the switch's MAC table (a form of MAC flooding attack). When the allowed number of MAC addresses is exceeded, port security can block additional devices or trigger alerts.
* Load balancer distributes network traffic but does not address MAC flooding attacks.
* IPS (Intrusion Prevention System) detects and prevents attacks but isn't specifically designed for MAC flooding mitigation.
* NGFW (Next-Generation Firewall) offers advanced traffic inspection but is not directly involved in MAC table security.
質問 # 415
A company is considering an expansion of access controls for an application that contractors and internal employees use to reduce costs. Which of the following risk elements should the implementation team understand before granting access to the application?
- A. Threshold
- B. Avoidance
- C. Register
- D. Appetite
正解：D
解説：
Risk appetite refers to the level of risk an organization is willing to accept before implementing security measures. When expanding access controls, the company must assess how much risk is acceptable in terms of data exposure, unauthorized access, and compliance obligations.
Reference:
CompTIA Security+ SY0-701 Official Study Guide, Risk Management domain.
質問 # 416
A security analyst has determined that a security breach would have a financial impact of $15,000 and is expected to occur twice within a three-year period. Which of the following is the ALE for this risk?
- A. $10,000
- B. $30,000
- C. $15,000
- D. $7,500
正解：D
質問 # 417
A security administrator needs to reduce the attack surface in the company's data centers. Which of the following should the security administrator do to complete this task?
- A. Configure the servers for high availability.
- B. Implement a honeynet.
- C. Define Group Policy on the servers.
- D. Upgrade end-of-support operating systems.
正解：D
解説：
Upgrading end-of-support operating systemsisone of the most effective ways to reduce the attack surface. Unsupported OS versionsno longer receive security patches, making them prime targets for attackers.Removing outdated softwareensures that known vulnerabilities cannot be exploited.
* A (honeynet)is used for threat analysis, not reducing the attack surface.
* B (Group Policy)helps enforce security policies butdoes not address outdated vulnerabilities.
* C (High availability)focuses on uptime, not security risk reduction.
質問 # 418
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